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
valentinak56 [21]
3 years ago
6

I need help plz help me (picture included) I set it at 15 points plz help

Mathematics
1 answer:
V125BC [204]3 years ago
4 0
7. A
8. F
9. C
those are the answers on that page
You might be interested in
I please need help with this question. Thank you
Diano4ka-milaya [45]

Part (A)

The input variable is the shoe size because it is along the horizontal axis, or x axis. It's not clear what the units for the shoe size are, but it's possible the units are in inches.

The output variable is the y value, which in this case is the height. The units for the height is in inches.

====================================================

Part (B)

We have a positive trend. We determine this visually by noting the regression line, or trend line, is going upward as we move from left to right.

Algebraically, the equation for the trend line has a positive slope, which leads to a positive trend.

A positive trend is where x and y increase together. As shoe size goes up, height goes up as well.

While not all the points are on the line, there is a tendency for the points to go uphill as we move from left to right.

As for the strength of the correlation, that part is subjective. If we knew the correlation coefficient r, then we could be more certain; however, we don't know this value. So instead we have to eyeball the given graph and give an estimate. Based on the graph, I'd say there's a moderate positive correlation going on. It's somewhere in the middle of weak and strong positive correlation because the data points are somewhat scattered randomly, but they trend upward nonetheless.

====================================================

Part (C)

The rate of change is the slope. The slope is the coefficient of the independent variable x. In this problem, the slope is 1.728

So the rate of change is 1.728 inches per shoe size.

In other words, as the shoe size increases by 1 unit (1 inch perhaps?), the height will increase by roughly 1.728 inches.

---------------------------------------------------------

Extra info:

The equation

Height = 51.46 + 1.728(Shoe Size)

is the same as

y = 51.46 + 1.728x

where x is the shoe size and y is the height

We can rearrange that into

y = 1.728x + 51.46

So that it matches with the familiar y = mx+b slope intercept form. This is optional.

3 0
3 years ago
A typical red blood cell in human blood has a diameter of approximately 0.0007 cm. Enter this diameter in scientific notation.
jonny [76]

Answer:

7-E -4

Step-by-step explanation:

My school supplyes us with a calculator and lucky for you it does scientific notation

8 0
3 years ago
BRAINLIEST PLEASE ANSWER FAST What is 12.5% written as a decimal? 0.00125 0.125 1.25 12.5
r-ruslan [8.4K]
Your answer is .125.
4 0
2 years ago
Read 2 more answers
Can somebody help me with this problem ?
Tems11 [23]

Step-by-step explanation:

I can't see the question your talking about

5 0
3 years ago
Geometry help please ASAP
____ [38]

Answer:

861.56 km2

Step-by-step explanation:

the formula for the area of a trapazoid is

a= (a+b/2) + h

4 0
2 years ago
Other questions:
  • Store is having a sale on almonds and Jelly beans. For 5 pounds of almonds and 3 pounds of jelly beans, the total cost is $20. F
    13·1 answer
  • Using data compiled by the Admissions Office at an imaginary university, college admissions officers estimate that 65% of the st
    9·1 answer
  • Question 3
    12·1 answer
  • The diagonals of quadrilateral ABCD intersect at E(−2,4). ABCD has vertices at A(1,7) B(−3,5). What must be the coordinates of C
    14·1 answer
  • Really need the answer to this.
    8·1 answer
  • The side of a square is<br> (4x-2y). What is the perimeter of the square
    9·1 answer
  • Is Triangle UVW cong Triangle XYZ? If so, name the postulate that applies
    14·1 answer
  • The triangular prism shown below is 6 \,\text{cm}6cm6, start text, c, m, end text wide and 4\,\text{cm}4cm4, start text, c, m, e
    15·1 answer
  • Jonah buys a television that costs $445. Sales tax in his state is 7 percent. Which of the following expressions represent the a
    5·1 answer
  • 3. WRITE Write a paragraph explaining the order of the steps that you would take to
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!