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The expression that allows calculating the midpoint is:
M = [(X₁ + X₂)/2 ; (Y₁ + Y₂)/2]
X₁ = - 6
X₂ = - 6
Y₁ = 5
Y₂ = 8
then
M = [(- 6 + (- 6))/2 ; (5 + 8)/2]
M = [(- 12)/2 ; 13/2]
M = (- 6; 13/2)Answer:
(−6,6 1/2)
Step-by-step explanation:
Calculate the midpoint, using the midpoint formula:
In decimal form, it would be (-6,6.5).
What is the equation of the line that
contains (2, 3) and has an undefined slope?
Answer:
George C. x=2 is the equation of the line through (2,3) with undefined slope.
Step-by-step explanation:
Answer:
x = 2
Step-by-step explanation:
A line with an undefined slope is a vertical line parallel to the y- axis with equation
x = c ( c is the value of the x- coordinates the line passes through )
the line passes through (2, 3 ) with x- coordinate 2 , then
x = 2 ← is the equation of the line
given the function f(t)=2(T)-3,what is f(7)
Answer: 11
Step-by-step explanation:
f(t)=2(t)-3
f(t)=2t-3
f(7)=2(7)-3
f(7)=14-3
f(7)=11
A poll showed that 68.1% of Americans say they believe that statistics teachers know the true meaning of life. What is the probability of randomly selecting someone who does not believe that statistics teachers know the true meaning of life.
Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol.
prob =
%
The probability of randomly selecting someone who does not believe that statistics teachers know the true meaning of life is 31.9%
What is the probability of randomly selecting someone who does not believe that statistics teachers know the true meaning of life?The given parameters are
P = 68.1%
The above probability represents the probability that Americans say they believe that statistics teachers know the true meaning of life
The complement probability is
Q = 1 - P
This gives
Q = 1 - 68.1%
Evaluate
Q = 31.9%
Hence, the probability of randomly selecting someone who does not believe that statistics teachers know the true meaning of life is 31.9%
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Your teacher has 35 balloons. She buys 4 packs of balloons. Each pack has 10 balloons. How many does she have now?
Answer:
75
Step-by-step explanation:
35+4x where x is 10
35+4*10
35+40
75
Answer:
75
Step-by-step explanation:
4 packs of balloons which each have 10 balloons is 40 total balloons she bought. Add 40 to 35 which is 75.
Find the equation of a line that passes through the points (-1,5) and (3,-3). Write the equation in slope-intercept, point-slope, and standard form.
You must show all of your work to receive credit.
Answer: The answer for this would y=-2x+b in slope form and y=-2x+3 in standard form.
Step-by-step explanation:
First we have to figure out what the slope is and you should this formula y2-y1/x2-x1 you plug in the coordinates and your equations should look like this -3-5/3-(-1)= -8/4 which simplified into -2. In standard form you put in the same equation but plug in the coordinates with the slope so it would look like this. -3=-2(3)+b and you would get 3 as b and then you substitute it in the equation again y=mx+b and it should like this in standard form y=-2x+3.
The number of students in mathletes increased from 20 to 28. what was the percent of increased
Step-by-step explanation:
Use the formula for finding out how what percent it is. (new amount ÷ old amount)28 ÷ 20 = 1.4Since you want to know how much it increased, subtract 11.4 - 1 = 0.4Convert 0.4 into a percentage.0.4 = 40%Answer:
The number of students increased by 40%
Rewrite y =
1/4x+3,
solving for x. What feature of the line can easily be found using the rearranged equation?
The solution of the equation for x is x = 4y - 12
What are inverse functions?Inverse functions are the opposite of an original equation. This means that for a function f(x), the inverse of the function f(x) is f-(x); it also represents the opposite function
How to rewrite the equation of the function?The function y is given as
y = 1/4x + 3
As a general rule, we start by writing y as a variable (say y = f(x)).
So, the equation of the function becomes
y = 1/4x + 3
The next step is to switch/swap the positions of x and y in the above equation y = 1/4x + 3 (in this case, it is not necessary)
So, the equation remains the same
y = 1/4x + 3
The next step is to make x the subject of the formula in the above equation y = 1/4x + 3
The equation becomes
1/4x = y - 3
This is done by subtracting 3 from both sides of the equation.
So, we have:
1/4x = y - 3
Multiply through the sides of the equation by 4
So, we have
x = 4y - 12
Express as an inverse function
f-1(x) = 4x - 12 --- this is not compulsory
So, the solution of the equation for x is x = 4y - 12
Hence, the rewuired solution of the equation for x is x = 4y - 12
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A pilot flew a plane from an altitude of 4500 feet to an altitude of 6300 feet. What was the change in altitude?
The required change in altitude is 900ft
Calculating change in altitudeFrom the question, we are given the following parameters
Initial height =5400ft
Final height = 6300ft
Determine the change in altitude
Change in altitude = Final - Initial
Change in altitude = 6300ft - 5400ft
Change in altitude = 900ft
Hence the required change in altitude is 900ft
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A cricketer scored 12 runs short of a century. How many runs did he score?
Answer:
it's 88
Step-by-step explanation:
a century = 100
so 100-12 =88
write three rations equivalent to 3/10
Answer:
6/20, 9/30, 12/40
Step-by-step explanation:
Original fraction: 3/10
How I got: 6/20
3 x 2 = 6
10 x 2 = 20
How I got: 9/30
3 x 3 = 9
10 x 3 = 30
How I got: 12/40
3 x 4 = 12
10 x 4 = 40
Is 4:6 and 8:12 equivalent to each other
Answer:
YES!
Step-by-step explanation:
ratios are like fractions, and fractions are basically division problems. SO, if you divide 4 by 6 you get .66666666, and if you divide 8 by 12 you ALSO get .66666666, soooooo yes they are equivalent!
Assume that women’s heights have a distribution that is symmetric and unimodal , with a mean of 69 inches and the standard deviation is 1.5 inches
Using the normal distribution, the height of a woman with a z-score of -1.5 is of 66.75 inches.
What is the missing information?The problems asks for the height of a woman with a z-score of -1.5.
Normal Probability DistributionThe z-score of a measure X of a normally distributed variable with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex] is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The z-score measures how many standard deviations the measure is above or below the mean. Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.For this problem, the parameters are given as follows:
[tex]\mu = 69, \sigma = 1.5, z = -1.5[/tex]
The height is found solving for x, hence:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
-1.5 = (X - 69)/1.5
X - 69 = -1.5 x 1.5
X = 66.75.
The height of a woman with a z-score of -1.5 is of 66.75 inches.
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(i) Write down the largest possible two digit number that can be made with two of the digits.
Answer:
85
Step-by-step explanation:
use the largest digit in the tens place, that is 8
use the next largest digit in the units place, that is 5
the largest 2- digit number is 85
(ii)
514 is the closest to 500 ( 14 units away )
485 is also close ( but 15 units away )
so 514 is the closest to 500
Answer: i) 85 & ii) 514
Step-by-step explanation:
Here, 8>5>4>1
So,
i) 85
ii) 514
HELP ME OUT PLEASE!!!!!
Answer:
y = -1/6x - 7/3
Step-by-step explanation:
slope = rise/run
(y2 - y1) / (x2 - x1)
ordered pairs: (-2,-2) and (4,-3)
-3 - (-2) = -1
4 - (-2) = 6
-1/6 = -1/6
m = -1/6
find b
take one ordered pair
y = mx + b
-3 = (-1/6)(4) + b
-3 = -4/6 + b
-3 + 4/6 = -2 2/6
-2 2/6 = -14/6
-14/6 = -7/3
b = -7/3
Write and post THREE word problems that are JWU college-related and that translate to one-variable linear equations.
The three questions mentioned above which translated to one variable linear equation.
Problem first,
The rank of a student is 5 more than the other, Sum of their rank is 7
The solution, rank of student be x
rank of another student = x + 5
According to the question,
x + x + 5 = 7
2x = 2
x = 1
Problem second.
A student has 2 pens less than their friend, the sum of their pens is 6
Solution-
let the student has x pens
His friends have = x + 2 pens
Now. total = x + x + 2
6 = 2x + 2
x = 2
Problem third,
Ashwin is 2 times older than his friend and his friend's age is 24 what is the age of Ashwin,
Solution,
Let the age of Ashwin be x
according to question
x = 24 + 2
x = 26
Thus, the three questions mentioned above which translated to one variable linear equation.
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c² +16c+n
how to solve for N
Solve the quadratic equation
c² +16c+64 = 0
The solution of this The solution of this quadratic equation are -8 and 0. are -8 and 0.
Step-by-step explanation:
Given that
The quadratic equationc² +16c+64 = 0
To find
The solution of this quadratic equationSo, according to the question
we have,
c² +16c+64 = 0We can solve this quadratic equation by factorising method.
So, we have to convert it on factors,
c² +16c+64 = 0
For getting it's factors, we have to divide 16c part in two parts,
So, we can write 16c = 8c + 8c,
c² +16c+64 = 0
c² +8c+ 8c+ 64 = 0
Now,
c(c +8) + 8(c+ 8) = 0
(c+8)(c+8) = 0
(c+8)² = 0
or,
(c + 8) = √0 (∵ √0 = 0)
c + 8 = 0
Now, we can say that
c = -8 or 0
Answer:
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Find the difference between the sum of the first 500 odd numbers and the sum
of the first 500 even numbers.
Drag each number to the correct location on the equations.each number can be used more than once.
(Need help asap)
Answer:
sin = 12/15 cos = 9/15 tan = 12/9
Step-by-step explanation:
Easy way to remember this is
SOH CAH TOA
O is opposite ( 12 in this problem )
H is hypotenuse i.e. opposite of the right angle ( 15 in this problem )
A is adjacent ( 9 in this problem )
One angle in a triangle has a measure that is three times as large as the smallest angle. The measure of the third angle is 40 degrees more than that of the smallest angle. Find the measure of the LARGEST angle.
Answer: The LARGEST angle has a measure of
degrees.
The measure of the largest angle is 84°
How to compute the value?It should be noted that the total angles on a triangle is 180°.
Let the smallest angle = x
Second angle = x + 40
Third angle = 3x
Therefore 3x + x + x + 40 = 180
5x = 180 - 40
5x = 140
x = 140/5
x = 28
Therefore, the largest angle will be:
= 3x
= 3 × 28°
= 84°
Therefore, the measure of the largest angle is 84°
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En una proporcion se sabe a=60 b=25 c-d=14 encuentre c y d
The numbers that represents c and d and aligns with the information will be 24 - 10 = 14.
How to illustrate the information?It should be noted that from the proportion, a = 60 and b = 25.
It was also stated that c - d = 14.
It should be noted that 60 and 25 have a common factor of 5. Therefore, the number that's equivalent to them will be:
(60 ÷ 2.5) = 24
25 ÷ 2.5 = 10
Therefore 24 - 10 = 14
The values are 24 and 10.
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PLEASE HELP ME!!!!!!How is the product of a complex number and a real number represented on the complex plane?
Consider the product of −2+8i and 5.
Drag a value or phrase into each box to correctly complete the statements.
The complete paragraph is shown:
The complex number - 2 + i 8 has modulus of 2√17. When - 2 + i 8 is multiplied by 5, the modulus of the product of 10√17.
Multiplying a complex number by a real number is a scalar of a complex number. The quadrant location of the complex number and its product with the real number are the same.
How to make operations with complex numbers
In this problem we have a paragraph, in which we must fill the blanks with the results of operations with complex numbers. The modulus of a complex number is found by using the Pythagorean theorem:
r = √[(- 2)² + 8²]
r = √(4 + 64)
r = √68
r = 2√17
And the product between the real number and the complex number is done by distributive property:
5 · (- 2 + i 8)
5 · (- 2) + i (5 · 8)
- 10 + i 40, whose modulus is 10√17.
Graphically speaking, the scalar of a complex number remains in the same quadrant of the complex plane.
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How do I graph -2x + 6 < 4 and 3(x + 1) < 12 on a number line?
Step-by-step explanation:
u first have to simplify a bit so u expand giving u -2x+6 less than 4 u then group like terms giving u -2x less than 4-6 amounting to -2x less than-2 u then divide both side by negative two to make x stand alone giving u positive 1 when u get Yr answer because u divided by a negative answer the sign changes to greater than
RACD holds 2t + 3 tracks.
Write and simplify an expression for the
number of tracks on 4 CDs.
When t = 15, how many tracks are there on
4 CDs?
The number of tracks on 4 CDs are 132.
Here, we are given that a CD holds 2t + 3 tracks.
Thus, the number tracks on 4 CDs will be given as-
4(2t + 3)
Simplifying the expression further, we get
(4 × 2 × t) + (3 x 4)
= 8t + 12
Therefore, the expression for the number of tracks on 4 CDs is 8t + 12
Now, if t = 15
Then, the number of tracks on 4 CDs can be found by substituting the value t = 15 in the expression (8t + 12)
= 8(15) + 12
= 120 + 12
= 132
Thus, there are 132 number of tracks on 4 CDs.
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In the lab, Heather has two solutions that contain alcohol and is mixing them with each other. She uses 4 times as much Solution A as Solution B. Solution A is
15% alcohol and Solution B is 12% alcohol. How many milliliters of Solution B does she use, if the resulting mixture has 216 milliliters of pure alcohol?
Answer:
1200 ml
Explanation:
Let x be the quantity ( in ml ) of b solution,
∵ solution a is 100 milliliters less of than solution b.
So, the quantity of solution a = 100 - x,
Now, solution a has 13% alcohol,
∴ Alcohol in solution a = 13% of (100-x) = = 0.13(x-100),
While solution b has 17% alcohol,
∴ Alcohol in solution b = 17% of x = 0.17x,
So, the quantity of alcohol in the mixture of a and b = 0.13(x-100) + 0.17x
= 0.13x - 13 + 0.17x
= 0.30x - 13
According to the question,
Total quantity of alcohol in the mixture = 347 ml,
⇒ 0.30x - 13 = 347
⇒ 0.30x = 347 + 13
⇒ 0.30x = 360
⇒ x = = 1200
Hence, the quantity of solution b is 1200 ml.
Identify all obtuse angles in the drawing below.
*
O ZBMD, ZAMC, ZAME
O ZBMC, ZCME
O ZAME
O ZAMB, ZCMD, ZDME
The required angle of obtuse angles are <BMD ,<AMC and <AME.
What is angle?
In Plane Geometry, a figure which is formed by two rays or lines that shares a common endpoint is called an angle and corner whether constituting a projecting part or a partially enclosed space.
Given:
The given figure is shown
<BMC=EMC=90°
According to given question we have
Angles between 90 and 180 degrees (90°< θ <180°) are known as obtuse angles.
Angles that are 90 degrees (θ = 90°) are right angles.
Angles that are 180 degrees (θ = 180°) are known as straight angles.
Angles between 180 and 360 degrees (180°< θ < 360°) are called reflex angles.
<BMC=EMC=90° (right angles)
<BME =<AMD= 180°( straight angles)
<BMD=<AMC=<AME =90°< θ <180° (obtuse angles )
Therefore, the required angle of obtuse angles are <BMD ,<AMC and <AME.
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can someone help me with this
thanks so much for the help!
For the given graph:
domain is D: [-2, 0)range is R: [0, 2)And yes, it is a function.
How to find the domain and range of the given function?For a given function y = f(x), the domain is the set of the inputs (possible values of x) and the range is the set of outputs (possible values of y).
To identify the domain we need to look at the x-axis (the horizontal one)
We can see in the left side that the first value is -2, whith a closed circle, meaning that the value belongs to the domain.
The right side is x = 0, with a open circle, which means that it does not belong to the domain.
Then the domain is D: [-2, 0)
Similarly, by looking at the y-axis (vertical axis) we can find the range which is:
R: [0, 2)
Finally, how to know if this is a function?
There is something called the "vertical line test". This test says that if you can't draw a vertical line that intersects the graph in two points or more, then it is a function.
And the graph clearly meets that test, so it is a function.
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(4x y)(5x^2yz) please I need it
Answer:
(4xy)(5x^2yz) = 20x^3y^2z
Step-by-step explanation:
You need to expand the brackets by multiplying compatible terms together.The numerical ones together and algebraic ones of the same variable together as well.You may follow the following steps to understand the way it is done.[tex]\begin{aligned}\\\small (4xy)(5x^2yz) &\equiv \small (4\times5)\times (x \times x^2) \times (y\times y) \times (z)\\\\&\equiv 20 \times x^3 \times y^2 \times z\\\\&\equiv 20x^3 y^2 z\end{aligned}[/tex]
Adele bought B packs of baseball cards and five packs of book bar cards right in expression that shows how many packs of sport cards Adele bought
in all
The expression to show the total number of sport cards that Adele bought will be Bb +5d.
How to illustrate the information?From the information, it was stated that Adele bought B packs of baseball cards and five packs of book bar cards right in expression that shows how many packs of sport cards Adele bought in all.
Let the number of baseball = b
Let the back cards =d
Therefore, the expression to show the number of sport cards will be:
= (B × b) + (5 × d)
= Bb +5d
Therefore, the expression to show the total number of sport cards that Adele bought will be Bb +5d.
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Adele bought B packs of baseball cards and five packs of book bar cards right in expression that shows how many packs of sport cards Adele bought in all. Write an expression for this
9(3.2)^2+4x-11 how to solve
The solution of the given linear equation is (103.16 + 4x).
What is meant by linear equation?Linear equations are degree 1 equations. It is the straight line equation. The standard linear equation is ax+by+c =0, where a and b are both are not zero. There are only 1 or 2 two variables in a linear equation. In a linear equation, no variable is raised to a power greater than just one or is employed as the denominator of such a fraction. When you find two values that satisfy a linear equation and plot them on a coordinate grid, each of the points fall on the same line.The given equation is;
= 9(3.2)² + 4x - 11
For finding (3.2)² = 3.2×3.2
(3.2)² = 10.24
Put the value in equation;
= 9×10.24 + 4x - 11
Multiply 9×10.24 = 92.16
Put the value;
= 92.16 + 4x + 11
Now, add the constant value
= (92.16 + 11) + 4x
= 103.16 + 4x
As, 4x is a variable part, it will not get added to the constant 103.16.
Thus, the solution of the equation is 103.16 + 4x.
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-3 x 58 how do I do it.
Answer:
-174
Step-by-step explanation:
58x2=116<----First two 58's
116+58=174<----last 58
We need to add the negative symbol since it should be negative, so the final answer is -174.