All categories

3 years ago

Problem 1: two numbers add together equals 47. their difference is 13. write and solve a system to find the two numbers

Mathematics

1 answer:

mr Goodwill [35]3 years ago

8 0

Answer:

34+13= 47

Step-by-step explanation:

47-34=13

You might be interested in

I am a rectangle, and my area is 80 square inches. My width is 2 inches shorter than my length. What is my perimeter?

pshichka [43]

Area=l*b=l*(l-2)=80(given)

so, l^2 - 2l =80
l^2 - 2l - 80=0
l=10 or -8

l=10,b=10-2=8
perimeter=2(l+b)=2(18)=36

6 0

3 years ago

Read 2 more answers

Write a translation rule that maps point d(7 -3) onto point d'(2 5)

Tems11 [23]

Answer:

translate (x,y) (x-5,y+8)

4 0

3 years ago

The perimeter of a stop sign is 96

Fittoniya [83]

Answer:

x = 44

Step-by-step explanation:

4+4+2x+2x= 96

-(add like terms)

8+4x=96

-(subtract 8 from both sides)

4x=88

-(divide by 4 on both sides to get you x alone)

x=44

4 0

3 years ago

Read 2 more answers

Plz help 100 points

tekilochka [14]

Answer:

the answer is one line is increased by 1, and the other increased by 6

hope this helped :))

4 0

3 years ago

Read 2 more answers

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:

Model 1

$y =69.9352 + 0.1530\times (income)$

$y =69.9352 + 0.1530\times 80000$

$y =12309.9352$

Model 2

$y =4.2436 + 0.0021\times (income)$

$y =4.2436 + 0.0021\times 80000$

$y =172.2436$

Model 3

$y =4.1393 + 0.0603\times (income)$

$y =4.1393 + 0.0603\times 80000$

$y =4828.1393$

Hence, the life expectancies are 12309.9352, 172.2436 and 4828.1393