1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
laila [671]
3 years ago
14

For which of the following graphs is y a function of x

Mathematics
2 answers:
EleoNora [17]3 years ago
4 0

Answer:

can you give us the whole sheet?

Step-by-step explanation:

Alenkasestr [34]3 years ago
3 0
I’m going to have to see more
You might be interested in
A pizza company uses equation C = 15n to calculate the cost of buying a number of pizzas. What is the constant of proportionalit
Lorico [155]

Answer:

29

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Given the equation and solution , find the missing coefficient.
Serggg [28]
-6x + 7 = 8x + A

let x = -4
-6(-4) + 7 = 8(-4) + A
24 + 7      = -32 + A
31 + 32    = -32 + 32 + A
63            = 0 + A
A = 63
6 0
3 years ago
Find the volume of the cylinder. Either enter an exact answer in terms of T or use 3.14 for T. With a height of 3 and a radius o
kobusy [5.1K]

Answer:

235.5‬

Step-by-step explanation:

V = πr²h

V = 3.14 x 5² x 3

V = 3.14 x 25 x 3

V = 3.14 x 75

V = 235.5‬

8 0
2 years ago
The least-squares regression model y =−3.4+5.2x and correlation coefficient r=−0.66 were calculated for a set of bivariate data
Makovka662 [10]

Answer:

r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}  

For this case the value of r = -0.66

Now we can calculate the determination coeffcient:

r^2 = (-0.66)^2 = 0.4356

And then we can conclude that 43.56% of the variation in y can be explained by the explanatory variable

And then 100-43.56 = 56.44 % of the variation in y that cannot be explained by the explanatory variable

Step-by-step explanation:

For this case we need to calculate the slope with the following formula:

m=\frac{S_{xy}}{S_{xx}}

Where:

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}

\bar x= \frac{\sum x_i}{n}

\bar y= \frac{\sum y_i}{n}

And we can find the intercept using this:

b=\bar y -m \bar x

And the model obtained for this case is:

y = -3.4 +5.2 x

The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.

And in order to calculate the correlation coefficient we can use this formula:  

r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}  

For this case the value of r = -0.66

Now we can calculate the determination coeffcient:

r^2 = (-0.66)^2 = 0.4356

And then we can conclude that 43.56% of the variation in y can be explained by the explanatory variable

And then 100-43.56 = 56.44 % of the variation in y that cannot be explained by the explanatory variable

8 0
2 years ago
a person is standing on top of a smaller building looking across the street at a taller building, which is 260 feet away horizon
Anuta_ua [19.1K]

The height of the smaller building is <u>94.63 feet</u>, computed using the trigonometric ratios.

In the question, we take AB to be the taller building, where A is its top and B is its base, CD to be the shorter building, where C is its top and D is its base, and CE to be the perpendicular from C to AB.

Given that the horizontal distance between the two buildings is 260 feet, we can say that BC = CE = 260 feet.

The angle of elevation from the top of the shorter building to the top of the taller building is 30°, that is, ∠ECA = 30°.

The angle of depression from the top of the shorter building to the base of the taller building is 20°, that is, ∠ECB = 20°.

When ∠ECB = 20°, then ∠CBD = 20°, as they are alternate angles.

We are asked to find the height of the shorter building, that is, we are asked to find CD.

In ΔCBD,

tan ∠CBD = CD/BD {perpendicular/base},

or, tan 20° = CD/260,

or, CD = 260*tan 20° = 260*0.36397023426 {∵ tan 20° = 0.36397023426},

or, CD = 94.6322609092.

Therefore, the height of the smaller building is <u>94.63 feet</u>, computed using the trigonometric ratios.

Learn more about heights and distances at

brainly.com/question/2004882

#SPJ4

7 0
2 years ago
Other questions:
  • Power +, Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these batteries follows the normal prob
    6·1 answer
  • Let X be the waiting time for a car to pass by on a country road, where X has an average value of 35 minutes. If the random vari
    6·1 answer
  • What number group is 45/5 in
    10·2 answers
  • If four out of ten people vote, then in a town with two hundred thousand people, how many will not vote?
    11·1 answer
  • What is 3+4/5 times 1+1/4
    13·2 answers
  • What is the area of circle with a radius of 2.45 cm?
    6·1 answer
  • HOW TO DO THIS QUESTION PLEASE ​
    8·1 answer
  • find the area of the shaded region of the radius is 9<br> Did I get the answer right
    13·1 answer
  • If <img src="https://tex.z-dn.net/?f=log_8%20N%20%3D%20%5Cfrac%7Br%7D%7B2%7D%20%5C%3A%20%2C%20%5C%3A%20log_2%282N%29%3D%205%5C%3
    8·2 answers
  • I need help solving this
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!