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fomenos
3 years ago
15

WILL MARK BRAINLIEST AND 50 PTS This table shows the minutes students spent studying for their science exam and the scores they

received. SHOW YOUR WORK
Study time (min) 19 12 34 10 17 42 60 15 9 21 30 50
Exam score 82 78 90 78 85 97 100 85 73 90 91 98
Use a graphing calculator to model the data using a linear function.

What is the correlation coefficient of the data?


−0.74

−0.48

0.93

0.98
Mathematics
1 answer:
SSSSS [86.1K]3 years ago
4 0

Answer:

The answer is 0.93

Step-by-step explanation:

I took the test

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For the equation y=5+6x, what does y equal when x is 4?
xxTIMURxx [149]

Answer:

y=31

Step-by-step explanation:

we know that x=4

5+6(4) = y

5+24 = 31

y= 31

Hoped this helped

4 0
2 years ago
Read 2 more answers
T a linen sale Mrs. Earle bought twice as many pillowcases for $2 each as sheets for $5 each. If she spent less than $40, not in
Anettt [7]
For this case, the first thing we must do is define variables:
 x: number of pillowcases
 y: number of sheets
 We now write the system of equations:
 2x + 5y = 40
 x = 2y
 Solving the system we have:
 x = 8.9
 y = 4.4
 Answer:
 
The maximum number of pillowcases she could have purchased is:
 
x = 8 (spent less than $ 40)
3 0
3 years ago
Heyy pls help! worth 20 points, and please only help if you know the answer. also no links those r kinda annoying lol
iragen [17]

Step 1: Find the slope:

    m= \dfrac{y_2-y_1}{x_2-x_1}= \dfrac{-2-7}{4-(-2)} =  \dfrac{-9}{6}= -\dfrac{3}{2}

This gives you y=-\dfrac{3}{2}x+b, but we need to find b.

To find b, substitute in one (x,y) pair and it doesn't matter which one.  I'll go with (4,-2):

    \begin{aligned}-2&=-\dfrac{3}{2}(4)+b\\[0.5em]-2&=-6+b\\[0.5em]4&=b\end{aligned}

Now take that b-value and plug in into the slope-intercept form:

     y=-\dfrac{3}{2}x+4

It's always a good idea to toss in the other x-value from the other point, to make sure it checks out.

7 0
3 years ago
In the sequence – 40, –33, –26, –19, … determine the 77th term and the sum of the first 90 terms.
Gala2k [10]
The 77th term is 532 because the nth term is 7n-7

7x77=539

539-7=532
5 0
3 years ago
As a fraction in simplest terms, what would you multiply the first number by to get the second?
Alinara [238K]

Answer:

22/25

Step-by-step explanation:

66/75 = 22/25

Input into equation to confirm

75 · 22/25 = 66

1650/25 = 66

66 = 66, so we're right

5 0
2 years ago
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