The circle equation in polar coordinates is:
[tex]r - 4*cos(\theta) + 4*sin(\theta) = 0[/tex]
How to change the coordinates of the circle equation?
Here we have the circle equation:
[tex](x - 2)^2 + (y + 2)^2 = 8[/tex]
First, we expand it to:
[tex]x^2 - 4x + 4 + y^2 + 4y + 4 = 8[/tex]
Now we can rewrite it as:
[tex]x^2 + y^2 -4x + 4y + 4 + 4 = 8\\\\x^2 + y^2 - 4x + 4y = 0[/tex]
Remember that:
[tex]x^2 + y^2 = r^2\\\\x = r*cos(\theta)\\y = r*sin(\theta)[/tex]
Replacing that, we get:
[tex]x^2 + y^2 - 4x + 4y = 0\\\\r^2 - 4r*cos(\theta) + 4r*sin(\theta) = 0[/tex]
That is the equation in polar form.
Now, because we can discard the solution r = 0, we can divide both sides by r to get:
[tex]r - 4*cos(\theta) + 4*sin(\theta) = 0[/tex]
To simplify it.
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Determine the growth defined by the equation y=1.4(3.72)^x.
Answer:
the type of growth defined by the equation is Exponential growth.
Step-by-step explanation:
Exponential growth :-Exponential growth is a pattern of data that shows greater increases with passing time, creating the curve of an exponential function. It occurs when the instantaneous rate of change of a quantity with respect to time is proportional to the quantity itself
expression for exponential growth -
f(x) = k(1+t)^x
f(x) = exponential growth
k = initial amount
t = rate of growth
x = no of time interval
therefor,
the equation shown in the question represents exponential growth with increasing time.
hence, Exponential growth is the correct answer.
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A pool a possible candidate for a student council consists of 14 freshmen and 8 softwares how many different councils consisting of 5 freshmen and 7 sophomores are possible
The different councils consisting of 5 freshmen and 7 sophomores are possible 9216.
We have given that,
A pool of possible candidates for a student council consists of 14 freshmen and 8 software.
We have to determine the how many different councils consisting of 5 freshmen and 7 sophomores are possible
What is the combination?[tex]_n C_r=\frac{n !}{r ! (n-r) !}_n C_r = number of combinations\\\n = total number of objects in the set\\\r = number of choosing objects from the set[/tex]
The total number of the council is
[tex]_{10} C_5\times _9 C_7[/tex]
=252(36)
=9216
The different councils consisting of 5 freshmen and 7 sophomores are possible 9216.
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the length of a cll is 2/3 mm. if the area of the cell is 1/12 square mm, what is the width of the cell
The width of a cell with the length (l) of the cell is [tex]\frac{2}{3}[/tex] mm and area (A) of the cell is [tex]\frac{1}{12}[/tex] mm² is [tex]\frac{1}{8}[/tex].
Given that, the length (l) of the cell is [tex]\frac{2}{3}[/tex] mm and area (A) of the cell is [tex]\frac{1}{12}[/tex] mm².
We need to find the width of the cell.
What is the area of a rectangle?The area of a rectangle is the product of its length and width. So, the area of the rectangle = Length×Width square units.
Now, the area of a cell = [tex]\frac{2}{3}[/tex] ×Width= [tex]\frac{1}{2}[/tex] mm².
⇒Width=[tex]\frac{\frac{1}{12} }{\frac{2}{3} } ={\frac{1}{12} \times {\frac{3}{2}=\frac{1}{8}[/tex]
Therefore, the width of a cell with the length (l) of the cell is [tex]\frac{2}{3}[/tex] mm and area (A) of the cell is [tex]\frac{1}{12}[/tex] mm² is [tex]\frac{1}{8}[/tex].
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In how many ways can $9$ friends sit at a circular table if two of them, Anna and Bob, insist on having exactly two people seated between them? (As usual, two seatings are considered the same if one is a rotation of the other.)
There are 10,080 different ways in which the friends can seat on the circular table.
In how many ways the friends can seat?
There are 9 friends, such that two of them need to be separated by exactly two people.
Because the table is circular, we can consider the first position as the position where Bob is.
Now let's count the number of options for each of the other 8 positions. (counting to the left).
The next two positions have 7 and 6 options respectively (as these can be taken by any of the other 7 friends)
For the next seat, we could seat Anna or one of the remaining 5 friends.
Let's assume we seat Anna there, then for each of the next positions, we will have, respectively, 5, 4, 3, 2, 1 options.
The total number of combinations is given by the product between the numbers of options, so we have:
C = 7*6*5*4*3*2*1
But we also need to consider the case where Anna is on the first position (and Bob on the third), so we just need to add a factor equal to 2.
C = 2*(7*6*5*4*3*2*1) = 10,080
There are 10,080 different ways in which the friends can seat on the circular table.
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CON PROCESOS POR FAVOR
Answer:
[tex] \dfrac{149}{40} [/tex]
[tex] \dfrac{38}{15} [/tex]
Step-by-step explanation:
[tex] (\dfrac{7}{8} + \dfrac{4}{5}) - (\dfrac{9}{20} + \dfrac{-5}{2}) = [/tex]
[tex] = (\dfrac{7}{8} \times \dfrac{5}{5} + \dfrac{4}{5} \times \dfrac{8}{8}) - (\dfrac{9}{20} + \dfrac{-5}{2} \times \dfrac{10}{10}) [/tex]
[tex] = (\dfrac{35}{40} + \dfrac{32}{40}) - (\dfrac{9}{20} + \dfrac{-50}{20}) [/tex]
[tex] = \dfrac{67}{40} - (-\dfrac{41}{20}) [/tex]
[tex] = \dfrac{67}{40} + \dfrac{41}{20} \times \dfrac{2}{2} [/tex]
[tex] = \dfrac{67}{40} + \dfrac{82}{40} [/tex]
[tex] = \dfrac{149}{40} [/tex]
[tex] (-\dfrac{6}{4} + \dfrac{3}{2}) + (\dfrac{6}{5} + \dfrac{4}{3}) = [/tex]
[tex] = (-\dfrac{3}{2} + \dfrac{3}{2})+ (\dfrac{6}{5} \times \dfrac{3}{3} + \dfrac{4}{3} \times \dfrac{5}{5}) [/tex]
[tex] = 0 + \dfrac{18}{15} + \dfrac{20}{15} [/tex]
[tex] = \dfrac{38}{15} [/tex]
The length of the base of a triangle is twice its height. If the area of the triangle is 16 square kilometers, find the height.
Answer:
4
Step-by-step explanation:
Area of a triangle = bh/2
B = 2h
16 = 2h × 2/2
h×2 = 16
2h = 16
* put a square root on both sides then u will get the answer which is
Height of the triangle = 4
What percent of 48 listings is 36 listings
Answer:
75%
Step-by-step explanation:
48x=36
x=36/48
x=3/4
x=0.75=75%
Which degenerate conic is formed when a double cone is sliced through the a pex by a plane parallel to the slant edge of the cone?
Circle
Parabola
One line
Two lines
One line will be formed which will be parallel to the slant edge option third is correct.
What is a conic section?It is defined as the curve which is the intersection of cone and plane. There are three major conic sections; parabola, hyperbola, and ellipse (circle is a special type of ellipse).
We have a statement:
Which degenerate conic is formed when a double cone is cut through the top by a plane parallel to the slant edge of the cone?
As we can see in the attached picture if the double cone is cut through the top by a plane parallel to the slant edge of the cone one line will be formed which will be parallel to the slant edge.
Thus, one line will be formed which will be parallel to the slant edge option third is correct.
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joseph drove from his summer home to his place of work. To avoid the road construction, joseph decided to travel the gravel road. After driving 20 minutes, he was 62 miles away from work, and after driving 40 minutes, he was 52 miles away from work. this situation is shown in the graph below. determine the slope of the line and describe what it means in this situation
The slope of the line and describe is the negative 0.5 which means in this situation will be negative 0.5 miles per minute.
What is the slope?The slope is the ratio of rising or falling and running. The difference between the ordinate is called rise or fall, and the difference between the abscissa is called run.
Joseph drove from his summer home to his place of work.
To avoid the road construction, Joseph decided to travel the gravel road.
After driving 20 minutes, he was 62 miles away from work, and after driving 40 minutes, he was 52 miles away from work.
This situation is shown in the graph below.
Then the slope of the line and describe what it means in this situation will be
Slope = (52 – 62) / (40 – 20)
Slope = – 10 / 20
Slope = – 0.5 miles per minute
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The interior angle of a regular polvgon is 9 times the size of its exterior angle
Work out how many sides the polygon has
==================================================
Work Shown:
x = exterior angle
9x = interior angle
interior + exterior = 180
9x+x = 180
10x = 180
x = 180/10
x = 18
n = number of sides
n = 360/x
n = 360/18
n = 20
There are 20 sides to the regular polygon.
Side notes:
The formula to determine n only works for regular polygons.A polygon with 20 sides is known as an icosagon.Any pair of adjacent interior and exterior angles are supplementary. They add to 180 degrees.Sum to n terms of each of following series. (a) 1 - 7a + 13a ^ 2 - 19a ^ 3+...
Notice that the difference in the absolute values of consecutive coefficients is constant:
|-7| - 1 = 6
13 - |-7| = 6
|-19| - 13 = 6
and so on. This means the coefficients in the given series
[tex]\displaystyle \sum_{i=1}^\infty c_i a^{i-1} = \sum_{i=1}^\infty |c_i| (-a)^{i-1} = 1 - 7a + 13a^2 - 19a^3 + \cdots[/tex]
occur in arithmetic progression; in particular, we have first value [tex]c_1 = 1[/tex] and for [tex]n>1[/tex], [tex]|c_i|=|c_{i-1}|+6[/tex]. Solving this recurrence, we end up with
[tex]|c_i| = |c_1| + 6(i-1) \implies |c_i| = 6i - 5[/tex]
So, the sum to [tex]n[/tex] terms of this series is
[tex]\displaystyle \sum_{i=1}^n (6i-5) (-a)^{i-1} = 6 \underbrace{\sum_{i=1}^n i (-a)^{i-1}}_{S'} - 5 \underbrace{\sum_{i=1}^n (-a)^{i-1}}_S[/tex]
The second sum [tex]S[/tex] is a standard geometric series, which is easy to compute:
[tex]S = 1 - a + a^2 - a^3 + \cdots + (-a)^{n-1}[/tex]
Multiply both sides by [tex]-a[/tex] :
[tex]-aS = -a + a^2 - a^3 + a^4 - \cdots + (-a)^n[/tex]
Subtract this from [tex]S[/tex] to eliminate the intermediate terms to end up with
[tex]S - (-aS) = 1 - (-a)^n \implies (1-(-a)) S = 1 - (-a)^n \implies S = \dfrac{1 - (-a)^n}{1 + a}[/tex]
The first sum [tex]S'[/tex] can be handled with simple algebraic manipulation.
[tex]S' = \displaystyle \sum_{i=1}^n i (-a)^{i-1}[/tex]
[tex]\displaystyle S' = \sum_{i=0}^{n-1} (i+1) (-a)^i[/tex]
[tex]\displaystyle S' = \sum_{i=0}^{n-1} i (-a)^i + \sum_{i=0}^{n-1} (-a)^i[/tex]
[tex]\displaystyle S' = \sum_{i=1}^{n-1} i (-a)^i + \sum_{i=1}^n (-a)^{i-1}[/tex]
[tex]\displaystyle S' = \sum_{i=1}^n i (-a)^i - n (-a)^n + S[/tex]
[tex]\displaystyle S' = -a \sum_{i=1}^n i (-a)^{i-1} - n (-a)^n + S[/tex]
[tex]\displaystyle S' = -a S' - n (-a)^n + \dfrac{1 - (-a)^n}{1 + a}[/tex]
[tex]\displaystyle (1 + a) S' = \dfrac{1 - (-a)^n - n (1 + a) (-a)^n}{1 + a}[/tex]
[tex]\displaystyle S' = \dfrac{1 - (n+1)(-a)^n + n (-a)^{n+1}}{(1+a)^2}[/tex]
Putting everything together, we have
[tex]\displaystyle \sum_{i=1}^n (6i-5) (-a)^{i-1} = 6 S' - 5 S[/tex]
[tex]\displaystyle \sum_{i=1}^n (6i-5) (-a)^{i-1} = 6 \dfrac{1 - (n+1)(-a)^n + n (-a)^{n+1}}{(1+a)^2} - 5 \dfrac{1 - (-a)^n}{1 + a}[/tex]
[tex]\displaystyle \sum_{i=1}^n (6i-5) (-a)^{i-1} =\boxed{\dfrac{1 - 5a - (6n+1) (-a)^n + (6n-5) (-a)^{n+1}}{(1+a)^2}}[/tex]
ABC Bank requires a 20% down payment on all its home loans. If the house is
priced at $145,000, what is the amount of the down payment required by the
bank?
A. $18,000
B. $290,000
• C. $29,000
D. $14,500
Answer:
c. $29,000
Step-by-step explanation:
since 20% of 145,000 = 29,000
to calculate use
(20/100) * 145,000
or
(y/100) * x
y = the precentage
x = the price of the house
therefore your answer is c. $29,000
hope this helps:)
(x) = x + 0.14x, then find the value of T(290).
A. 300.45
B. 351.2
C. 325.8
D. 330.6
Answer:
D. 330.6
Step-by-step explanation:
To evaluate the function for a specific value of x, put that value where x is in the function definition, and do the arithmetic.
__
T(x) = x +0.14x . . . . . given function definition
T(290) = 290 +0.14×290 = 290 +40.6 . . . . substitute 290 for x
T(290) = 330.6
The value of T(290) will be 330.6.The relation between them is shown as T(x) is dependent and x is the independent variable. Option D s correct.
What is a function?A connection between independent variables and the dependent variable is defined by the function.
Functions help to represent graphs and equations. A function is represented by the two variables one is dependent and another one is an independent function.
Given relation;
T(x) = x +0.14x
Substitute the value of x we get;
T(290) = 290 +0.14×290
T(290) = 330.6
Hence, option D s correct.
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The population of a large city can be calculated using the function P=345,000(1.01). What can you say about the rate of change from year 1 to year 2 compared to the rate of change from year 9 to year 10?
Rate of change (ROC) refers to how quickly something changes over time.
What is rate of change?The term "rate of change" (ROC) describes the rate at which something changes over time. Thus, it is not the amount of individual changes themselves but rather the acceleration or slowdown of changes (i.e., the pace). Rate of change is a tool used in finance to comprehend price returns and spot trend momentum.Divide the change in y-values by the change in x-values to determine the average rate of change. Identifying changes in quantifiable parameters like average speed or average velocity calls for the knowledge of the average rate of change.The ratio between the change in the values of the y variables and the change in the values of the x variables is known as the rate of change.Given data :
The rate of change will be the same for all years. The rate of change is 7%. The . basic formula for this equation is: I(1+R)^T, where I = Initial amount, R = Rate of growth, and T = Time. So the R here is 0.07, or 7%. The growth RATE is constant, the growth AMOUNT will increase each year.
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Solve the following word problem.
Money is invested at two rates of interest. One rate is 8 % and the other is 2%. If there is $1300 more invested at 8 % than at 2 %. find the amount invested at
each rate if the total annual interest received is $350. Let x = amount invested at 8% and y = amount invested at 2 %. Then the system that models the problem
[x = y + 1300
is
Solve the system by using the method of addition.
0.08x +0.02y = 350,
Answer:
at 8%: $3760at 2%: $2460Step-by-step explanation:
You are given a system of equations and asked to solve it by the method of addition. That method requires you add a multiple of one equation to the other so that one of the variables is eliminated. In some cases, this is easier if multiples of both equations are added together. The resulting single-variable equation is then solved in the usual way.
__
lookThe given system of equations is ...
x = y +13000.08x +0.02y = 350We notice the first equation has the variables on opposite sides of the equal sign, and both their coefficients are 1. The second equation has the variables on the same side of the equal sign, and their coefficients are 0.08 and 0.02.
planTo eliminate a variable by the "addition method," we need to have the variable on the same side of the equal sign with opposite coefficients. Or, we need to have the variable on opposite sides of the equal sign with the same coefficient.
Both of the x-variables are on the left side, so we need opposite coefficients. We can get that by multiplying the first equation by -0.08, or by multiplying the second equation by -12.5. We judge the first of these choices to be easier.
The y-variables are on opposite sides of the equal sign, so we need equal coefficients. We can get that by multiplying the first equation by 0.02, or the second equation by 50.
solutionWe choose to multiply the first equation by 0.02, so we can eliminate the y-variable. Here is the result of doing that, then adding the results
(0.02)(x) +(0.08x +0.02y) = (0.02)(y +1300) +(350)
0.10x +0.02y = 0.02y +376 . . . . . eliminate parentheses
0.10x = 376 . . . . . . . . . subtract 0.02y from both sides. y is eliminated
x = 3760 . . . . . . . . . divide by 0.10
y = x -1300 = 2460
__
The amount invested at 8% was $3760; the amount invested at 2% was $2460.
_____
Additional comment
We chose to eliminate y for a couple of reasons. x is the amount at the higher rate. We have found that solving for the higher-rate amount usually works best for preventing errors. The other reason is that multiplying by 0.02 results in smaller numbers, which we consider easier to deal with.
Had we multiplied by -0.08 to eliminate x, we would have ...
-0.08(x) +(0.08x +0.02y) = -0.08(y +1300) +(350)
0.02y = -0.08y +246
We judge -0.08(1300) +350 harder to calculate mentally, than 0.02(1300) +350.
0.10y = 246
y = 2460; x = 2460+1300 = 3760
Graph the equation.
Y= - 3/2x
Answer:
Step-by-step explanation:
6(2x²-5) = [?]
x = -3
Answer:
78
Step-by-step explanation:
plug in -3 as x
6(2(-3)^2-5)
6(2(9)-5)
6(18-5)
6(13)
78
Solvex + 5-6 = 7.
OA. x = -8 and x = -18
OB. x = 8 and x = -8
C. x = -8 and x = 18
OD. x = 8 and x = -18
The temperature is dropping at a rate of five degrees per hour.
Let d represent the number of degrees the temperature drops.
Let t represent the number of hours that pass.
Which is the dependent variable?
Othe number of hours
Othe number of degrees the temperature drops
O the rate at which the temperature drops
the day of the week
Answer:
The rate at which the temperature drops.
Step-by-step explanation:
In science, the dependent variable is what you are measuring.
In math, the dependent variable is what you are evaluating.
Same idea, different topic.
Answer:
d=temp drop
t=hours
dependent variable is the temperature drops because the number of hours will tell you how much the temprature drops
this is the equation
total temp drops=t x 5
hope this helps!?
Follow the steps to find the area of the shaded region.
First use the formula below to find the area of the whole sector.
Sector Area= ( angle of sector/360). R2
Sector Area = ? Cm^2
Round to four decimal places.
14 cm
46°
14 cm
The area of the sector, to 4 decimal places, is 78.6794 cm².
We have given that,
Sector Area= ( angle of sector/360). R2
We have to determine the Sector Area
What is the Area of a Sector of a Circle?
Area of sector = ∅/360 × πr².
We have given the following:
∅ = 46°
Radius (r) = 14 cm
Area of sector = 46/360 × π(14²)
Area of sector ≈ 78.6794 cm²
The area of the sector is approximately 78.6794 cm².
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The data show the total number of medals (gold, silver, and bronze) won by each country winning at least one gold medal in the Winter Olympics. Find the range, sample variance, and sample standard deviation of the numbers of medals won by these countries. 1 2 3 3 4 9 9 11 11 11 14 14 19 22 23 24 25 29
The range, standard deviation, and variance of the numbers of medals won by these countries are 28, 8.845, and 78.2353, respectively.
What is a Range?A range is given to a parameter to allow maximum leverage to the parameter. for example, if a vendor wants a rod of diameter 20 cm, then he may give a range of ±1 cm., which means he will accept the rod of 19(20-1) cm to 21(20+1) cm.
The range of the numbers of medals won by these countries is,
Range = Max - Min = 29 - 1 = 28
To find the standard deviation we need to know the following details,
Sum of the number of medals = ∑x = 234Sum of the square of the number of medals = ∑x² = 4372Number of observations = n = 18Now, the standard deviation of medals won by these countries is,
[tex]\sigma = \sqrt{\dfrac{\sum x^2 - \frac1n (\sum x)^2}{n-1}}\\\\\sigma = \sqrt{\dfrac{\4372 - \frac{234^2}{18}}{18-1}}\\\\\sigma = 8.845[/tex]
The variance of the numbers of medals won by these countries is,
v = σ²
v = 78.2353
Hence, the range, standard deviation, and variance of the numbers of medals won by these countries are 28, 8.845, and 78.2353, respectively.
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distance between (-5,1) and (0,-4)?
Answer:
7.07106781187
Angle RSU is complementary to angle UST. Angle QSR is congruent to angle RSU.
Lines Q, R, U, and T extend from point S from left to right. Angle R S T is a right angle.
Which statement is true about angles UST and QSR?
They are complementary.
They are supplementary.
They are congruent.
They are obtuse.
Answer:
Statement 1 is correct
Angles UST and QSR are complementary.
Step-by-step explanation:
Complementary angles are those angles whose addition gives result of 90°
Congruent angles are those angles which are equal to each other. We can say that there values are same.
Here angle RSU is complementary to angle UST.
Therefore there addition is equal to 90°
∠RSU + ∠UST = 90° - (i)
Here angle QSR is congruent to angle RSU.
Therefore their values are equal.
It means ∠QSR =∠RSU -(ii)
From equation (i) and (ii) we get
∠QSR + ∠UST = 90°
So angles UST and QSR are complimentary angles.
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Answer:
Step-by-step explanation:
A
two sides and an angle are given below. determine whether the given information results in one triangle, two triangles, or no triangle at all. solve any resulting triangle(s). b = 8, c= 7, b = 170°
Answer:
A. single triangle. C = 8.74°, A = 1.26°, a = 1.01
Step-by-step explanation:
When two sides and an angle are given, the possibility of two (or zero) triangles exists only when the given angle is opposite the shorter of the two given sides. That is not the case here, so the given measures define one unique triangle.
Law of SinesThe law of sines tells us the sides and angles have the relation ...
sin(A)/a = sin(B)/b = sin(C)/c
We can use this first to find angle C:
sin(C) = c/b·sin(B)
C = arcsin(c/b·sin(B)) = arcsin(7/8·sin(170°)) ≈ 8.7394°
∠C ≈ 8.74°
Remaining measuresNow that we know two angles, we can find the third:
A = 180° -B -C = 180° -170° -8.74° = 1.26°
∠A = 1.26°
Using the law of sines again, we can find the measure of side 'a'.
a = b·sin(A)/sin(B) = 8·sin(1.26°)/sin(170°) ≈ 1.01346
The measure of segment 'a' is about 1.01 units.
__
Additional comment
If 'a', 'b', and angle A are given, there will be zero triangles if b/a·sin(A) > 1. If b/a·sin(A) < 1 and b > a, there will be two (2) triangles. Otherwise, as here, there will be one unique triangle.
For which value of x is the expression y
=
a. 1
b. -1
C. 5
d. -5
3x-3
x-5
- undefined?
1
Step-by-step explanation:
when we put 1 in the equation the nominator becomes zero and it becomes undefined
Hii!
___________________________________________________________
[tex]\stackrel\star\rightsquigarrow\circ\boldsymbol{\underbrace{Answer:}}}\circ\leftharpoonup[/tex]
The value of x should be 5! ^^
[tex]\stackrel\star{\rightsquigarrow\circ\boldsymbol{\underbrace{Explanation:}}}\circ\leftharpoonup[/tex]
[tex]\boxed{\\\begin{minipage}{7cm} For\,an\,expression \\ \boldsymbol{to\,be\,und efined,} \\ \,its\,denominator\,should\,be\,zero \end{minipage}}}[/tex]
Remember this! ^^
Now let's consider this:
Which value of x will make the denominator equal to 0?
Is it 1? If we stick 1 in, we will not obtain 0.
[tex]\twoheadrightarrow\sf y=\cfrac{3\cdot1-3}{1-5}[/tex]
[tex]\bullet[/tex] Simplify this
[tex]\twoheadrightarrow\sf y=\cfrac{3-3}{-4}[/tex]
---
We will obtain 0 in the numerator, but not in the denominator; if the numerator is 0, then the fraction, or fractional expression, is 0.
Let's try 5. 5-5 is equal to 0, so this sounds promising! ^^
[tex]\twoheadrightarrow\sf y=\cfrac{3\cdot5-3}{5-5}[/tex]
[tex]\bullet[/tex] Look what we obtain when we simplify
Don't we obtain 15-3/0?
Like I said above, if an expression has 0 as its denominator, it's undefined.
--
Hope that this helped! Best wishes.
[tex]\textsl{Reach far. Aim high. Dream big.}[/tex]
--
solve the equation uding the most direct method: 3x(x+6)=-10?
To solve this problem, you will use the distributive property to create an equation that can be rearranged and solved using the quadratic formula.
DistributeUse the distributive property to distribute 3x into the term (x + 6):
[tex]3x(x+6)=-10[/tex]
[tex]3x^2+18x=-10[/tex]
RearrangeTo create a quadratic equation, add 10 to both sides of the equation:
[tex]3x^2+18x+10=-10+10[/tex]
[tex]3x^2+18x+10=0[/tex]
Use the Quadratic FormulaThe quadratic formula is defined as:
[tex]\displaystyle x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}[/tex]
The model of a quadratic equation is defined as ax² + bx + c = 0. This can be related to our equation.
Therefore:
a = 3b = 18c = 10Set up the quadratic formula:
[tex]\displaystyle x=\frac{-18 \pm \sqrt{(18)^2 - 4(3)(10)}}{2(3)}[/tex]
Simplify by using BPEMDAS, which is an acronym for the order of operations:
Brackets
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction
Use BPEMDAS:
[tex]\displaystyle x=\frac{-18 \pm \sqrt{324 - 120}}{6}[/tex]
Simplify the radicand:
[tex]\displaystyle x=\frac{-18 \pm \sqrt{204}}{6}[/tex]
Create a factor tree for 204:
204 - 1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102 and 204.
The largest factor group that creates a perfect square is 4 × 51. Therefore, turn 204 into 4 × 51:
[tex]\sqrt{4\times51}[/tex]
Then, using the Product Property of Square Roots, break this into two radicands:
[tex]\sqrt{4} \times \sqrt{51}[/tex]
Since 4 is a perfect square, it can be evaluated:
[tex]2 \times \sqrt{51}[/tex]
To simplify further for easier reading, remove the multiplication symbol:
[tex]2\sqrt{51}[/tex]
Then, substitute for the quadratic formula:
[tex]\displaystyle x=\frac{-18 \pm 2\sqrt{51}}{6}[/tex]
This gives us a combined root, which we should separate to make things easier on ourselves.
Separate the RootsSeparate the roots at the plus-minus symbol:
[tex]\displaystyle x=\frac{-18 + 2\sqrt{51}}{6}[/tex]
[tex]\displaystyle x=\frac{-18 - 2\sqrt{51}}{6}[/tex]
Then, simplify the numerator of the roots by factoring 2 out:
[tex]\displaystyle x=\frac{2(-9 + \sqrt{51})}{6}[/tex]
[tex]\displaystyle x=\frac{2(-9 - \sqrt{51})}{6}[/tex]
Then, simplify the fraction by reducing 2/6 to 1/3:
[tex]\boxed{\displaystyle x=\frac{-9 + \sqrt{51}}{3}}[/tex]
[tex]\boxed{\displaystyle x=\frac{-9 - \sqrt{51}}{3}}[/tex]
The final answer to this problem is:
[tex]\displaystyle x=\frac{-9 + \sqrt{51}}{3}[/tex]
[tex]\displaystyle x=\frac{-9 - \sqrt{51}}{3}[/tex]
Hassan used the iterative process to locate StartRoot 0.15 EndRoot on the number line.
A number line going from 0 to 0.9 in increments of 0.1. A point is between 0.4 and 0.5.
Which best describes Hassan’s estimation?
Hassan is correct because StartRoot 0.15 EndRoot almost-equals 0.4
Hassan is correct because the point is on the middle of the number line.
Hassan is incorrect because StartRoot 0.15 EndRoot is less than 0.4.
Hassan is incorrect because the point should be located between 0.1 and 0.2
Hassan is incorrect because √0.15 is less than 0.4, and the value of √0.15 is 0.3872 option third is correct.
What is the iteration method?Iteration is the process of repeating a procedure in order to produce a series of results.
We have:
= √0.15
[tex]= \rm \sqrt{{\dfrac{15}{100}}}[/tex]
[tex]= \rm \sqrt{{\dfrac{3}{20}}}[/tex]
= (1.732)/(4.472)
= 0.3872
√0.15 is less than 0.4.
Thus, Hassan is incorrect because √0.15 is less than 0.4, and the value of √0.15 is 0.3872 option third is correct.
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Answer:
C
Step-by-step explanation:
II. The following figure shows an infinite zigzag path with each zag
occurs at an angle of π/4. Find the total length of this infinite zigzag
path.
T/4
1
T/4/
I need help please, it would greatly appreciated!!
The length of the infinite zigzag path is 1
How to determine the length
Note that the infinite zigzag path is embedded in an isosceles triangle
Using angle π/4, we have that
Tan π/4 = opposite/ adjacent
[tex]tan \frac{3. 412}{4} = \frac{x}{1}[/tex]
[tex]tan 0. 7855 = x[/tex]
[tex]x = 0. 014[/tex]
To find the longer part 'y', use the Pythagorean theorem
[tex]y^{2} = (0.014)^2 + (1)^2[/tex]
[tex]y^2 = 1.879 * 10^-4 + 1[/tex]
[tex]y^2 = 1. 00[/tex]
[tex]y = \sqrt{1. 000}[/tex]
[tex]y = 1. 000[/tex]
The length of the infinite zigzag path is the same as the length of the longer part of the triangle which equals 1.
Thus, the length of the infinite zigzag path is 1
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Which of the following points would fall on the line produced by the point-slope form equation y - 2 = 3(x - 5) when graphed?
(4, 5)
(6, 5)
(5, 5)
(1, 4)
The point is (6, 5).
What is graph?Graph is a mathematical representation of a network and it describes the relationship between lines and points.
Given :
y - 2 = 3(x - 5)
Those point will satisfy after putting the value of x and y we get LHS= RHS.
take (4, 5)
5-2 = 3(4-5)
3= -3
Hence, not satisfied.
take, (6, 5)
5-2 = 3(6-5)
3= 3
Hence, satisfied.
take, (5, 5)
5-2 = 3(5-5)
3= 0
Hence, not satisfied.
take, (1, 4)
4-2 = 3(1-5)
2= -12
Hence, not satisfied.
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Which is true regarding the graphed function f(x)?
• f(O) = 3
• f(5) = - 1
• f(3) = 2
O f(2) = -2
Answer:
f(5) = -1
Step-by-step explanation:
The points on the graph are (0,4), (1,3),(2,2), (3,1), (4,0), (5,-1).
The answers are in the form:
f(x) = y
That is, the number in the parenthesis is the x and the number by itself on the right is the y. The only one that is a point on the line is f(5) = -1, which is the point (5,-1)