athenacamacho5305 athenacamacho5305

03-06-2020
Mathematics

contestada

4) The sum of two numbers is 39. Their
difference is 21. What are the two numbers?

Respuesta :

03-06-2020

Answer:

30 and 9

Step-by-step explanation:

x+y=39 , x-y=21

Solve for x:

x+y=39 , x-y=21

x= 30

Substitute x with 30:

(30)+y=39 , (30)-y=21

Solve for y:

y=9

Answer Link

Otras preguntas

i need help with this ?

Arbitration is the final step in the conflict-management process. False True

The correct range for the function ƒ(x) = x − 9 if the domain is (3, -3, 0) is:

To construct a parallel line through a point not on the line using paperfolding you can perform the ___ construction twice

which expression is the best estimate of 1 1/5 X 3 2/3 A: 2 X 3 B: 1 X 4 C: 2 X 3 D: 1 X 3

Without completing the calculations, determine what the new pressure will be in the problem below. Also, explain how you were able to determine the new pressure

write a letter to your friend in the Kathmandu. Describe your present present situation.

Programmed cell death to remove damaged cells so they can’t pass on their mutations is called what

Suggest and explain one other action that can be done so that the house remains warmer duringthe cold months.

Express as a percentage. 10