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levacccp [35]
4 years ago
14

Battery life has a strong, negative, linear relationship with temperature. If the least-squares regression line using xx = tempe

rature explains 90% of the variation in battery life, which of the following must be the correlation, rr, between battery life and temperature?
Mathematics
1 answer:
nevsk [136]4 years ago
8 0

Answer: -0.95

Step-by-step explanation:

The value that explains the least-squares regression line is 90% or 0.9, and is also r^2.

You would just square root r^2 and get r=0.948. since the relationship is negative, r= -0.948, or -0.95

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Solve using substituion -5x + y = -2 -3x + 6y = -12
sergiy2304 [10]

Answer:

<h2>x = 0</h2><h2>y = - 2</h2>

Step-by-step explanation:

-5x + y = -2………… Equation 1

-3x + 6y = -12 ………… Equation 2

Using substitution

Make y the subject in equation 1 and substitute it into equation 2 and solve for x

That's

y = 5x - 2

We have

- 3x + 6( 5x - 2) = - 12

- 3x + 30x - 12 = - 12

27x = - 12 + 12

27x = 0

Divide both sides by 27

x = 0

Substitute x = 0 into y = 5x - 2

We have

y = 5(0) - 2

y = - 2

So the solutions are

<h3>x = 0 </h3><h3>y = - 2</h3>

Hope this helps you

4 0
3 years ago
Which is a quadratic function?
goldfiish [28.3K]

Answer:

it has two zeroes

it is of the form ax^2+bx+ c

thats all

4 0
3 years ago
Read 2 more answers
Help help Find the surface area of the figure !
makkiz [27]

Answer: 340 in. squared

Step-by-step explanation:

17*7=119

15*7=105

8*7=56

8/2*15=60

119+105+56+60=340 in.^2

7 0
3 years ago
what is the perimeter of the rectangle with vercities at [4 1/2, 5], [4 1/2,1], [-5 1/2, -1, -5 1/2. 5
umka21 [38]
2.5-2.1=0.4
41+51=92
0.4x2+92x2=184.8 units
6 0
3 years ago
Each of the digits 3, 4, 6, 7, 8, and 9 is used once and only once to form a six-digit integer. What is the largest six-digit mu
Fofino [41]

Answer:

  • 987436

Step-by-step explanation:

The number is divisible by 4 if the number formed by the last two digits is divisible by 4.

Since we are looking for the largest possible option, lets try 2-digit numbers formed by the given digits.

The smallest 2-digit number that is divisible by 4 is 36

<u>Then the largest number is:</u>

  • 987436

4 0
3 years ago
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