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

This first Athenian reform leader established the Citizen's Assembly, forbade enslavement for debts, and made fathers responsible for seeing that their sons lea

In general, fitness evaluations are meant to help you measure your physical fitness against those of similar age and gender a. True b. False

(I SCREENSHOT THE WHOLE THING. PLS PLS HELP D: )

Which conflict from The Tragedy of Julius Caesar is not an example of external conflict? A)Brutus and Cassius’ argument about bribes B)Octavius and Mark Antony’

The various treatment approaches for mental health disorders always include __________.

Write solve a division problem that divides a 4-digit number by a 2-digit number. How did you estimate the first digit of the quotient?

Find the gradient and the coordinates of the y-intercept for the graph: y= x+6

A bottle of hand hand lotion is on sale for $2.25. If this price represents a 50% discount from the original price, what is the original price to the nearest ce

Which is a diatomic molecule? A. He B. O2 C. NaCl D. CuF2

how do i find the difference between 719 and 225