cnaldridge
cnaldridge cnaldridge
  • 15-03-2021
  • Mathematics
contestada

eight times a number plus five times another number is -13. the sum of the two is 1. What are the numbers?

Respuesta :

wassuphumans
wassuphumans wassuphumans
  • 15-03-2021

Answer:

-6 and 7

Step-by-step explanation:

x is one number and y is the other

(1)-----------------    8x+5y=-13

(2)------------------  x+y= 1

first, let multiply both sides of (x+y=-1) by 8

(3)-----------------    8x+8y=8

lets subtract (1) from (3)

(8x+8y)-(8x+5y)=8-(-13)=3y

8-(-13)=3y ->  21=3y

y=7

lets plug in 7 into (2) for x

x+7=1

x=-6

the numbers are -6 and 7

Answer Link

Otras preguntas

-x - 2 = -44 + 5 Not sure how to do this
Choose the simple subject in the following sentence. The tallest contestant won the prize. A. contestant B. prize C. tallest D. won
Why did the Confederation Congress call for a Constitutional Convention?
How do you simplify 13/78
Round each number to the nearest thousand. Which is the best estimate for the sum of 472,378+178,261? a. 650,000 b. 650,600 c. 651,000 d. 652,000
if the product of two numbers is 21 and the sum is 10 what are the two numbers
What is fluffy in french? 30 points
why were many Americans eager to move to the western frontier?
Iron forms rust, expressed as: Fe2O3. Using information from the Periodic Table, what is the mass of one mole of Fe2O3? A. 71.85 g B. 143.70 g C. 15
another word for a religious group