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IgorLugansk [536]
3 years ago
8

A line of best fit is f(x) ≈ −0.86x + 13.5 for the set of points in the table

Mathematics
1 answer:
Maurinko [17]3 years ago
7 0

Answer: -2

Step-by-step explanation:

Because it is

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Rom4ik [11]

Answer:

49

Step-by-step explanation:

100- 51 = 49

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3 years ago
Please help it’s not hard
blagie [28]

Answer:

H

Step-by-step explanation:

y= (1)x-3

Positive gradient, and the y intercept for the graph is -3, F is not the answer, the Y intercept is not -3.

7 0
3 years ago
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3 years ago
One number was divided by 2, followed by this quotient being multiplied by 4. next, the product was added to 9. the total sum wa
grin007 [14]

Answer:

Step-by-step explanation:

First, turn the word problem into an equation:

n(a number) was divided by 2

\frac{n}{2}

followed by this quotient beying multiplied by 4

\frac{n}{2}*4

the product was added to 9

\frac{n}{2}*4+9

the total sum was 25

\frac{n}{2}*4+9 = 25

use PEMDAS to solve the equation

subtract 9 on both sides

\frac{n}{2}*4 = 16

cancel the 2 and the 4 using factorization

n*2 = 16

divide 2 on both sides

n = 8

7 0
2 years ago
Suppose x=c1e−t+c2e3tx=c1e−t+c2e3t. Verify that x=c1e−t+c2e3tx=c1e−t+c2e3t is a solution to x′′−2x′−3x=0x′′−2x′−3x=0 by substitu
Harrizon [31]

The correct question is:

Suppose x = c1e^(-t) + c2e^(3t) a solution to x''- 2x - 3x = 0 by substituting it into the differential equation. (Enter the terms in the order given. Enter c1 as c1 and c2 as c2.)

Answer:

x = c1e^(-t) + c2e^(3t)

is a solution to the differential equation

x''- 2x' - 3x = 0

Step-by-step explanation:

We need to verify that

x = c1e^(-t) + c2e^(3t)

is a solution to the differential equation

x''- 2x' - 3x = 0

We differentiate

x = c1e^(-t) + c2e^(3t)

twice in succession, and substitute the values of x, x', and x'' into the differential equation

x''- 2x' - 3x = 0

and see if it is satisfied.

Let us do that.

x = c1e^(-t) + c2e^(3t)

x' = -c1e^(-t) + 3c2e^(3t)

x'' = c1e^(-t) + 9c2e^(3t)

Now,

x''- 2x' - 3x = [c1e^(-t) + 9c2e^(3t)] - 2[-c1e^(-t) + 3c2e^(3t)] - 3[c1e^(-t) + c2e^(3t)]

= (1 + 2 - 3)c1e^(-t) + (9 - 6 - 3)c2e^(3t)

= 0

Therefore, the differential equation is satisfied, and hence, x is a solution.

4 0
3 years ago
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