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

Help me with this Thanks!

Calculate the distance between the points J= (2, -3) and Q=(9,-9) in the coordinate plane. Round your answer to the nearest hundredth.

can anyone help me???

please solve it......

1. How does Jeanette feel about Rose Mary's appearance by the dumpster?

Please Hurry). Solve for x. X = _____° Look at the picture so you can answer the question .

The following points on the graph of a function X y 2 4 3 5 4 6 5 7 6 8 7 9 Which point would be on the inverse of this function? A (7,5) B (-7,-5) C (-

part b which of the following quotes best support the answer to part a

humming birds are sensitive to which colour

Help me please……………………