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Paladinen [302]

3 years ago

12

Use linear regression to find the equation of the line that best fits the data. Predict the average retail price of a car that i

s 77 years old in the spring of 1997. At what age is the car worthless?

1 answer:

Dafna11 [192]3 years ago

5 0

Answer:

never

Step-by-step explanation:

if it still works then it is not worthless if its super old then it can be a collectors item

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What is the inequality shown?

tatiyna

Answer:

-4<_ 3

Step-by-step explanation:

4 0

3 years ago

What is 2k + 10 + 5k - 25 + 3k + 35 = 180?

Fudgin [204]

Answer:

k=16

Step-by-step explanation:

Combine all the like terms

2k+10+5k-25+3k+35 =180
(2k+5k+3k) + (10-25+35) = 180
10k + 20 = 180

Solve for k by subtracting 20 on both sides and then dividing by 10 on both sides

10k=160
k=16

3 0

3 years ago

Read 2 more answers

A plane flew 1,236 miles in 4 hours.what was the planes average speed (rate) in miles per hour?

luda_lava [24]

Answer:

309 miles per hour

Step-by-step explanation:

Divide the total distance traveled by the time. So the answer is 1236 miles divided by 4 hours, or 309 miles per hour

6 0

3 years ago

The graph of a function f is shown below.<br> Find f (2)

liberstina [14]

Answer: f(2) is 3.

Step-by-step explanation:

f(2) just means "what is the vale of the function, f, when x = 2? Look for x=2 and read the y value where the line crosses x=2, in this case, the y value is 3. So f(2) = 3.

======

[One could also determine the equation for the line. Provided below.]

The slope is -(1/2) and the y-intercept is 4:

y = -(1/2)x + 4

For x=2,

y = -(1/2)*(2) + 4

y = 3

y(2) = 3

4 0

3 years ago

Archy [21]

The discriminant for a quadratic polynomial gives you information about the polynomial's roots.

Given $y=ax^2+bx+c$ , the discriminant is given by $\Delta=b^2-4ac$ .

There are three possible conclusions you can draw. If $\Delta>0$ , then the quadratic has two distinct real roots. If $\Delta=0$ , then there is one repeated real root. If $\Delta$ , then there are two complex (non-real) roots.

Since you found $\Delta=72>0$ , that means that $y$ has two distinct real roots.

7 0

3 years ago