Step-by-step explanation:
linear functions (or lines) have really only 2 attributes :
the slope (indicating the inclination of the line).
the y-intercept (the intersection with the y-axis) or the x-intercept. either way, they show the actual position of the line.
the lines intersect at one point, if they have different slopes.
they intersect at infinitely many points, if the slope and the y- or x-intercepts are equal (ultimately that means the lines are identical, so every point is an intersection point).
if they have the same slope but different y- or x-intercepts, it means they are parallel and will never intersect.
The following dot plot shows the pulse rates of runners after finishing a marathonWhich of the following data sets is represented in the dot plot?A. {145, 165, 175, 1853}B. {145, 150, 150, 152, 153, 160, 163, 165, 170, 170, 178, 179, 185}C. {1, 5, 6, 1}D. {145, 165, 165, 165, 165, 165, 175, 175, 175, 175, 175, 175, 185}
The data set that represented by the dot plot given is:
D. {145, 165, 165, 165, 165, 165, 175, 175, 175, 175, 175, 175, 185}
In a dot plot, each data point in a data set is represented by a dot.
To find out the data set that is represented in the dot plot, list out the data points as plotted on the dot plot given.
In the given dot plot that is showing the pulse rates of runners after finishing a marathon, it can be seen that,
There are 1 dot on 145, 5 dots on 165, 6 dots on 175 and 1 dot on 185.
Thus:
145 - 1 dot = 145165 - 5 dots = 165, 165, 165, 165, 165175 - 6 dots = 175, 175, 175, 175, 175, 175185 - 1 dot = 185Therefore, the data set that represented by the dot plot given is:
D. {145, 165, 165, 165, 165, 165, 175, 175, 175, 175, 175, 175, 185}
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A circle is circumscribed around $ABCD$ as follows:How many degrees are in $\angle CAB \angle ACD$
The measure of [tex]$\angle CAB = 180^{\circ} - \angle ACD$[/tex]
What is the circumscribed circle?
A circumscribed circle is a circle that is drawn around a polygon such that the circle touches all the vertices of the polygon. In other words, the vertices of the polygon lie on the circumference of the circle.
Given that a circle is circumscribed around a quadrilateral ABCD, it is clear that the circle passes through all four vertices of the quadrilateral, A, B, C and, D. Also, the diameter of the circle is the diagonal AC of the quadrilateral.
The angles formed by the diameter with the tangents from the non-adjacent vertices are supplementary. That is [tex]$\angle CAB + \angle ACD = 180^{\circ}$[/tex]
Therefore, the measure of [tex]$\angle CAB = 180^{\circ} - \angle ACD$[/tex]
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work out the value of v in the equation below . 9.2/v = tan 19 give your answer to 1d.p
Answer: 26.7
Step-by-step explanation:
[tex]\frac{9.2}{v}=\tan 19^{\circ}\\\\\frac{v}{9.2}=\frac{1}{\tan 19^{\circ}}\\\\v=\frac{9.2}{\tan 19^{\circ}}\\\\v \approx 26.7[/tex]
Answer: The given equation is 9.2/v = tan(19). To solve for v, we can first multiply both sides of the equation by v to get rid of the denominator on the left side. This gives us 9.2 = v * tan(19).
Next, we can divide 9.2 by tan(19) to find the value of v. The value of tan(19) is approximately 0.3420201, so 9.2 / 0.3420201 = 26.884956 (rounded to 1 decimal place).
So the value of v in the equation is approximately 26.9 (to 1 decimal place).
Step-by-step explanation:
decimals that are equal to 3 1/40
Are the ratios 1/2 and 2/3 equal?
No these ratios 1/2 is not equal to 2/3 because 2/3 is not the multiple of 1/2
What is an equivalent ratios?
A ratio compares two quantities named as antecedent and consequent, by the means of division. For example, when we cook food, then each ingredient has to be added in a ratio. Thus, we can say, a ratio is used to express one quantity as a fraction of another quantity.
Two ratios are equivalent to each other if one of them can be expressed as the multiple of the other. Hence, to get the equivalent ratio of another ratio, we have to multiply the two quantities (antecedent and consequent) by the same number.
Given ratios are 2:1 and 3:1
we can write it as 2/1 and 3/1.
The lcm of 2 and 3 is 6.
Multiply denominator of both ratio with 6, we get
2/6 and 3/6 And we can see both the ratios are not equal.
Hence, there are not equivalent ratios.
4:1 and 8:3 are equivalent ratios -----> is false, because 4:1 is equivalent to 8:2
11:2 and 2:11 are equivalent ratios------> is false (because, are reciprocal ratios, not equivalent ratios)
3:1 and 9:3 are equivalent ratios ------> is true
because 3:1 multiply both sides by 3 -----> 3*3:1*3=9:3
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M110) solve
csc ( to power 5 ) theta - 4 csc theta + 1 = 0
Answer:
The equation csc^5 (theta) - 4 csc (theta) + 1 = 0 can be solved by factoring the left-hand side of the equation.
csc^5 (theta) - 4 csc (theta) + 1 = 0
csc (theta) (csc^4 (theta) - 4) + 1 = 0
csc (theta) (csc^2 (theta) - 2)(csc^2 (theta) + 2) + 1 = 0
We can see that the last expression is a polynomial equation of the form (ax+1)(bx^2+c*x+d)=0 where x= csc(theta) , a=1, b=1, c= -2, d=2
Solving for x = 0, we get x=0 which is not a valid solution because csc(theta) is defined only for theta != k*pi where k is an integer.
Solving for x= -1/2 and x= 1/2, we get csc(theta) = -1/2 and csc(theta) = 1/2
To find theta, we can use the reciprocal cosecant function (csc) which is defined as 1/sin(theta)
csc(theta) = -1/2 => sin(theta) = -2
csc(theta) = 1/2 => sin(theta) = 2
Answer: 0 is cos^4(theta) = (4 - 1/sin(theta))(1-sin^2(theta))^2.
Step-by-step explanation: To solve the equation csc^5(theta) - 4csc(theta) + 1 = 0, we can use the identity csc^n(theta) = 1/sin^n(theta).
First, we can apply the identity:
1/sin^5(theta) - 4/sin(theta) + 1 = 0
Next, we can factor out sin(theta) from the first two terms:
sin(theta)(1/sin^4(theta) - 4) + 1 = 0
We can then use the identity sin^2(theta) = 1 - cos^2(theta) to rewrite the first term:
sin(theta)(1 - cos^4(theta)/(1-cos^2(theta))^2 - 4) + 1 = 0
We can then divide both sides of the equation by sin(theta), and we get:
1 - cos^4(theta)/(1-cos^2(theta))^2 - 4 + 1/sin(theta) = 0
We can then simplify this equation to get:
cos^4(theta)/(1-cos^2(theta))^2 = 4 - 1/sin(theta)
By using the identity cos^2(theta) = 1-sin^2(theta) we can simplify the equation further:
cos^4(theta) = (4 - 1/sin(theta))(1-sin^2(theta))^2
So to find the solution we can use double angle identities to simplify the right side of the equation.
Therefore, the solution to the equation csc^5(theta) - 4csc(theta) + 1 = 0 is cos^4(theta) = (4 - 1/sin(theta))(1-sin^2(theta))^2.
pls help I'm failing :(
What is 2x+4y-2x simplified?
A basket contain 3 red balls, 5 blue balls and 2 green balls. 2 ball are picked one after the other without replacement find the probability that: A. Both are red first is blue, the other is green Both are of different colour They are of the same color
Answer:
Step-by-step explanation:
Total Number of balls = 3+5+2=10
a)Probability both are red: 3/10 * 2/9 = 1/15
b)First ball blue, other green : 5/10 * 2/9 = 1/9
c) Both are different color : (3/10*7/9)+(5/10*5/9)+(2/10*8/9)
=21/90+25/90+16/90=62/90=31/45
d)Both are same color: (3/10*2/9)+(5/10*4/9)+(2/10*1/9)
=6/90+20/90+2/90 = 28/90 = 14/45
. mrs. elliott, a teacher at durham school of the arts, studies the effect of "personal narratives" on people's behavior. for example, if the "story" you have about your academic ability is positive, you do better in school than if your "story" is negative. something as simple as hearing older students describe overcoming challenges similar to yours can help you change your story and improve your performance. (a) suppose you have 40 college freshman who have volunteered to be part of a study. design a completely randomized experiment that tests the hypothesis that hearing older students talk about overcoming challenges improves academic performance. be sure your design addresses how randomization will be incorporated. (b) suppose you have reason to believe that students with a history of strong academic performance respond differently than those with a history of modest performance. describe how you would change the experimental design to address this difference.
Answer:
(a) There are 2 groups. The treatment group will hear older students describe overcoming challenges. The control group won't hear anything.
Label each student with a different integer from 01 to 40. Go to a line in Table D and read two-digit groups moving from left to right. The first 20 different labels between 01 and 40 identify the 20 students who hear older students talking. The remaining 20 students don't hear anything. Ignore groups of digits from 41 to 00.
(b) Separate the 40 freshmen into 2 groups according to their history of academic performance. Carry out treatment separately in each block to account for the variation due to the history of academic performance.
Step-by-step explanation:
(a) We want to infer the cause and effect between hearing older students talking about their challenges and the students' academic performance.
Claim the 2 groups first;
Clarify the random assignment of people.
(b) The differences between the two kinds of students are expected to affect the response to the treatments in some ways. Randomized block designs are to eliminate the effect.
Nolan and his children went into a grocery store and he bought $9 worth of apples and bananas. Each apple costs $0.75 and each banana costs $0.50. He bought 2 more apples than bananas. By following the steps below, determine the number of apples, x, and the number of bananas, y, that Nolan bought.
Determine three ways to have 2 more apples than bananas:
Nolan and his children went into a grocery store and he bought $9 worth of apples and bananas, The three ways are explained below
What are equations?Generally, One way to determine the number of apples, x, and the number of bananas, y, that Nolan bought is to use the equation:
x + y = a (total number of apples and bananas)
0.75x + 0.5y = 9 (total cost of apples and bananas)
Another way is to use the equation:
x = y + 2 (number of apples is 2 more than the number of bananas) 0.75x + 0.5y = 9 (total cost of apples and bananas)
A third way is to use the equation
y = x - 2 (number of bananas is 2 less than the number of apples)
0.75x + 0.5(x-2) = 9 (total cost of apples and bananas)
You can then solve for x and y using either of the above equations.
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Which ordered pairs make the equation true?
4x−3y=−10
Select each correct answer.
(3, −1)
(−4, −2)
(1, 4)
(−1, 2)
Answer:
(- 4, - 2 ) and (- 1, 2 )
Step-by-step explanation:
to determine which ordered pairs make the equation true
substitute the x and y coordinates of each point into the left side of the equation and if equal to the right side then it is a solution.
(3, - 1 )
4(3) - 3(- 1) = 12 + 3 = 15 ≠ - 10 ← not true
(- 4, - 2 )
4(- 4) - 3(- 2) = - 16 + 6 = - 10 ← true
(1, 4 )
4(1) - 3(4) = 4 - 12 = - 8 ≠ - 10 ← not true
(- 1, 2 )
4(- 1) - 3(2) = - 4 - 6 = - 10 ← true
Find the Perimeter of a box with the area of 96 square feet?
Answer:
24
Step-by-step explanation:
There are 4 sides to a box. Meaning you will have to divide 96 by 4. Giving you 24. Since perimeter means to add, add 24 4 times and you will be given the result of 96.
each half of this figure is composed of 3 red triangles, 5 blue triangles and 8 white triangles. when the upper half is folded down over the centerline, 2 pairs of red triangles coincide, as do 3 pairs of blue triangles. there are 2 red-white pairs. how many white pairs coincide?
7 white pairs coincide when upper half is folded over the centerline.
What is triangle ?
A triangle is a three-sided polygon that has three straight sides and three angles. The sum of the angles in a triangle is always 180 degrees. Triangles are classified based on their side lengths or angle measures.
We know that each half of the figure is composed of 3 red triangles, 5 blue triangles and 8 white triangles.
When the upper half is folded down over the centerline, 2 pairs of red triangles coincide, as do 3 pairs of blue triangles. there are 2 red-white pairs.
So, 2 red triangles + 3 blue triangles + 2 red-white pairs = 7 pairs of triangles that coincide
The total number of triangles in each half of the figure is 3 red triangles + 5 blue triangles + 8 white triangles = 16
If 7 pairs of triangles coincide, then 16 - 7 = 9 pairs do not coincide.
And since 2 red-white pairs coincide, then the remaining 9 - 2 = 7 pairs must be white pairs.
So 7 white pairs coincide when upper half is folded over the centerline.
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Zack deposited $4,533 in an account earning 5.9% interest compounded annually.
To the nearest cent, how much will he have in 1 year?
If Zack deposited $4,533 in an account earning 5.9% interest compounded annually. The amount he will have in 1 year is: $4,807.79.
How to find the compounded amount?Using this formula to find the compounded amount
A = P(1+r/n)^nt
Where:
A = Amount = ?
P = Principal = $4,533
R = Interest rate = 5.9% or 0.059
n = Number of months = 12
t = Time = 1 years
Let plug in the formula
A = $4,533 (1+ 0.059/12)^1×12
A = $4,533 (1+.004916)^12
A = $4,533 (1.004916)^12
A = $4,533 (1.0606)
A = $4,807.79
Therefore the amount he will have in 1 year is: $4,807.79.
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Rewrite the expression with a rational exponent as a radical expression.
[tex]( {4}^{ \frac{2}{5} } {)}^{ \frac{1}{4} } [/tex]
The expression [tex](4^{(2/5)})^{(1/4)}[/tex] can be rewritten as the radical expression [tex]4^{(1/1280)}.[/tex]
What is the rational exponent?
A rational exponent is an exponent that is a fraction. In mathematics, a number raised to a fractional power represents a root of the number. For example, the expression[tex]x^{(1/3)}[/tex] represents the cube root of x. Similarly, the expression [tex]x^{(2/5)}[/tex] represents the fifth root of x².
The given expression can be rewritten as a radical expression as follows:
[tex](4^{(2/5)})^{(1/4)} = 4^{(2/5) * (1/4)}[/tex]
Using the property of exponents that (a^b)^c = a^(b*c), we simplify the right side of the equation:
[tex]4^{((2/5) * (1/4))} = 4^{(2/5 * 1/256)} = 4^{(1/1280)}[/tex]
So, the expression [tex](4^{(2/5)})^{(1/4)}[/tex] can be rewritten as the radical expression [tex]4^{(1/1280)}.[/tex]
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write the missing angle measure next to each letter.
please help girl
The measure of the missing angles are a = 65°, b = 115°, c = 115°, d = 65° and e = 65°
How to write the missing angle measure?Angle geometry is a branch of mathematics that deals with angles and the properties of angles in geometric shapes such as measuring angles, classifying angles, and solving problems involving angles.
The measure of the missing angles are as follow:
a = 65° (corresponding angles are equal)
a + b = 180° (sum of angles of straight line is 180°)
65° + b = 180°
b = 180-65 = 115°
c = b (corresponding angles are equal)
c = 115°
d = 180 - c (sum of angles of straight line is 180°)
d = 180 - 115 = 65°
e = d (corresponding angles are equal)
e = 65°
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-1/2x-2y=4
Solve for X and y pls
Answer:
The image attached
Step-by-step explanation:
Put the equation into slope-intercept form
[tex]y=mx+b[/tex]
The equation should look like this
[tex]y=-\frac{1}{4}x-2[/tex]
Graph the equation with the slope being [tex]-\frac{1}{4}[/tex] and [tex]-2[/tex] being the y-intercept.
A park has t tables spread equally among the 3 picnic areas.Write an expression that shows how many picnic tables are at each picnic area.
Answer:
8000
Step-by-step explanation:
bc if its 3 picnic its its 8000
How many faces does this polyhedron have?
HELP!!
6
12
8
10
Answer:
6
Step-by-step explanation:
you have to count the 2d faces
Answer:
6 faces
Step-by-step explanation:
DCGH
BCDA
BCGF
ADHE
BFEA
FGHE
How do you find the domain domain and range of a function?
To find the domain and range, the function we simply solve the equation y=f(x) to determine the values of the independent variable x and obtain the domain.
Domain: In simple words, the domain is the set of values of x for which function f(x) is defined, and also the set of values of x for which we can calculate the value of f(x)
Range: The range of function can define as the set of values of f(x) for the value of its domain
For finding the domain of any function f(x) ..find the value of all x for which function f(x) is defined
For finding the value of the range of function f(x), calculate the value of f(x) for all values of x in the set of domains of f(x)
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Using banker's algorithm what is safe sequence.(A) P2, P3, P1 (B) P1, P2, P3 (C) P3, P2, P1 (D) None of the above
P2, P3, P1 is a safe sequence according to the banker's algorithm.
What is banker's algorithm?The banker's algorithm gets its name from the fact that it determines whether or not a person should be granted a loan amount in order to assist the bank system in securely simulating resource allocation. In this part, we'll go through the Banker's Algorithm in depth. The Banker's Algorithm is primarily used in the banking system to avoid stalemate. It assists you in determining whether or not a loan will be granted. This procedure is used to assess the allocation for securely replicating the maximum amount available for all resources.
Here,
According to the banker's algorithm, the sequence P2, P3, P1 is secure.
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(a) On March 2, Marin Company sold $914,000 of merchandise to Cullumber Company on account, terms 3/10, n/30. The cost of the merchandise sold was $592,400. (b) On March 6, Cullumber Company returned $104,600 of the merchandise purchased on March 2. The cost of the merchandise returned was $64,400. (c) On March 12, Marin Company received the balance due from Cullumber Company.
The final answers are as follows gross profit $321,600, cost of goods sold of $528,000 and balance due $782,980.
(a) The terms of the sale are 3/10, n/30 which means that if Cullumber Company pays the invoice within 10 days, they will receive a 3% discount on the total invoice amount. However, if they pay within 30 days, they will not receive a discount.
To calculate the amount due if Cullumber Company takes the discount:
$914,000 x 3/100 = $27,420
$914,000 - $27,420 = $886,580
To calculate the gross profit:
$914,000 - $592,400 = $321,600
(b) The return of merchandise means that Cullumber Company is returning $104,600 worth of merchandise and thus the amount due to Marin will be:
$886,580 - $104,600 = $782,980
And the cost of goods sold will be:
$592,400 - $64,400 = $528,000
(c) On March 12, Marin Company received the balance due from Cullumber Company which is $782,980.
This means that the net amount received by Marin Company after the discount and return of merchandise is $782,980.
Therefore, The final answers are as follows gross profit $321,600, cost of goods sold of $528,000 and balance due $782,980.
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Pls answer soon !!!!!!!!!
The required solution of the given simultaneous equation is x = 5 and y = -9.
What are simultaneous linear equations?Simultaneous linear equations are two- or three-variable linear equations that can be solved together to arrive at a common solution.
here,
Given a system of equations,
6x + 5y = -15 - - - - -(1)
-4x - y = -11 - - - - (2)
Multiply equation 1 by 1 and multiply equaiton 2 by 5 then add both the equation,
6x + 5y -20x -5y = -15 -55
-14x = -70
x = 5
Now,
-4(5) - y = -11
-20 - y = -11
-y = -11 +20
y = -9
Thus, the required solution of the given simultaneous equation is x = 5 and y = -9.
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Monte todo página 108 quiero las respuestas porfa
Answer:
no abla espanol
Step-by-step explanation:
Question 1 (Essay Worth 10 points)
(02.08 HC)
0
In a volatile housing market, the overall value of a home can be modeled by V(x) = 325x² - 4600x+145000, where V represents the value of the home
and x represents each year after 2020. Find the vertex and interpret what the vertex of this function means in terms of the value of the home. Show the
work you completed to determine the vertex.
Answer:
The vertex of a parabolic function like V(x) = 325x² - 4600x + 145000 can be found by using the vertex form of the equation, which is y = a(x-h)² + k. In this form, (h,k) is the vertex of the parabola. To convert the equation V(x) = 325x² - 4600x + 145000 into vertex form, we can complete the square to get the following:
V(x) = 325(x² - 14x) + 145000
To complete the square we will add and subtract (14/2)² = 49
V(x) = 325(x-7)² + 145000 - 49*325 = 325(x-7)² + 138375
So the vertex of the parabola is (h,k) = (7, 138375).
The vertex of a parabolic function represents the minimum or maximum point of the parabola, depending on whether the parabola opens upwards or downwards. In this case, the vertex represents the maximum value of the home. It means that the value of the home reaches its highest point at 7 years after 2020, and this highest point is 138375.
So in terms of the value of the home, the vertex of the function represents the point at which the housing market reaches its peak, after which the value of the home begins to decrease.
9. An observer in a lighthouse sees a sailboat out at sea. The angle of depression from the
observer to the sailboat is 6°. If the observer is 104 ft up in the lighthouse, how far is the boat
from the base of the lighthouse?
The required distance from the base of the lighthouse to the sailboat is 11 feet.
Let x be the distance from the base of the lighthouse to the sailboat.
We know that the angle of depression is 6° and the height of the observer is 104 ft. We can use the tangent function to find the ratio of the opposite side (x) to the adjacent side (104 ft).
tan(6°) = x / 104
To find x, we can multiply both sides by 104:
x = 104 × tan(6°)
x = 104 × 0.10510
x = 10.9308
x ≈ 11
The value of x ≈ 11 is the distance from the base of the lighthouse to the sailboat.
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Pls help I need it Right now
The linear regression equation is given as follows:
y = -30x + 1048.8.
The estimate for the number of cases in 2026 is given as follows:
689 new cases.
How to obtain the equation for the regression line?The equation for the line of fit is obtained inserting the points of the data-set into a linear regression calculator.
(this is because there are multiple types of regression, such as logistic, exponential and quadratic regression).
The points for this problem are given as follows:
(0, 1047), (1, 1020), (2, 989), (3,943), (4,964), (5,880).
Inserting these points into a calculator, the regression equation is given as follows:
y = -30x + 1048.8.
2026 is 12 years after 2014, hence the estimate is calculated as follows:
y = -30(12) + 1048.8
y = 689 new cases.
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ghout-replacement-and-write-them-in-the-order-picked-assume-there-are-no-repeats-of-digits-in-your-phone-number-what-is-the-probability-that-you-have-written-the-first-6-digits-of
Therefore , the required probability is therefore 1/151200, which is the answer to the probability problem.
What is the process of probability?The probability that a happening will happen or that the proposition is true is determined by a field of mathematics known as probability theory. A probability is a number between 0 and 1, where 1 represents certainty and 0 roughly represents the likelihood that an event will occur. A probability is a numerical expression of a certain event's likelihood or chance of happening. The percentages 0% - 100% and 0 to 1 can also be used to express probabilities. the percentage of times in an ideal collection of equally likely alternatives that an event occurs compared to all possible outcomes.
Here,
The six numbers can only be chosen in one way if the order chosen must match my phone number.
In 10P6 methods, six random digits from a possible total of ten can be chosen.
So the necessary probability is equal to 1/P. (10,6).
Alternative: Probability = 1/151200
The required probability is therefore 1/151200, which is the answer to the probability problem.
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Part D & E answer please :)
D. The retail price of the phone is given as follows: 42.
E. The percent reduction in the price to $31.50 is given as follows: 25%.
How to obtain the prices and percentages?The prices and the percentages are obtained applying the proportions in the context of this problem.
The purchase price is given as follows:
$12.
The markup rate is given as follows:
250%.
Meaning that the retail price is of 100% + 250% = 350% of the purchase price, hence it's value is obtained as follows:
3.5 x 12 = $42.
The percentage reduction is given by the reduction in the price divided by the initial price and then multiplied by 100%.
The reduction from $42 to $31.50 is given as follows:
42 - 31.50 = $10.50.
Hence the percent reduction is given as follows:
10.5/42 x 100% = 25%.
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