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Katena32 [7]
1 year ago
8

1

Mathematics
1 answer:
KIM [24]1 year ago
3 0

Answer:

-3

Step-by-step explanation:

Perpendicular slopes are always the opposite reciprocal of the original slope.

opposite= flip it

EX: 2→1/2, 1/4→4

reciprocal=change the sign

EX: 2→-2, 1/4→-1/4

So...

1/3→-3

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Use each model to predict the life expectancy of residents of a country for which the average annual income is $80,000
Mandarinka [93]

The life expectancies of residents of a country for which the average annual income is $80,000 for the three models are 12309.9352, 172.2436 and 4828.1393

The life expectancies of the models are given as:

y =69.9352 + 0.1530\times (income) --- model 1

y =4.2436 + 0.0021\times (income) --- model 2

y =4.1393 + 0.0603\times (income) --- model 3

Given that the average annual income is $80,000;

We simply substitute 80000 for income in the equations of the three models.

So, we have:

<u>Model 1</u>

y =69.9352 + 0.1530\times (income)

y =69.9352 + 0.1530\times 80000

y =12309.9352

<u>Model 2</u>

y =4.2436 + 0.0021\times (income)

y =4.2436 + 0.0021\times 80000

y =172.2436

<u>Model 3</u>

y =4.1393 + 0.0603\times (income)

y =4.1393 + 0.0603\times 80000

y =4828.1393

Hence, the life expectancies are 12309.9352, 172.2436 and 4828.1393

Read more about linear models at:

brainly.com/question/8609070

4 0
2 years ago
Please help me it’s due today at 4:20pm please help me please please help me
Sergio039 [100]

Answer:

x = 3, the error is that the -2x should be added.

Step-by-step explanation:

The -2x should be added to the left side.

3x - 7 = -2x + 8

3x + 2x = 8 + 7

5x = 15

x =3

Answer lest edited 3:11 PM Central, 11/24/2020

4 0
2 years ago
Read 2 more answers
Question 9 (1 point)
Luden [163]

Answer:

7

Step-by-step explanation:

16x-80+18=4x+22

16x-62=4x+22

12x-62=22

12x=84

x=7

8 0
3 years ago
1/2 x -41 <br> x=10<br><br> Simplify the answer
Darya [45]
If I'm interpreting this right, it's -36 since a half times ten is 5... so it comes down to 5-41 which equals -36.
6 0
2 years ago
Kim discovered it would cost a total of $4,500 for her to take her family on a vacation. She
Llana [10]

Answer:

nose

Step-by-step explanation:

3 0
3 years ago
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