Welcome90 Welcome90

03-06-2020
Mathematics

contestada

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

OkBroomar OkBroomar

03-06-2020

Answer:

30 and 9

Eeexplination;

Answer Link

Otras preguntas

Which group argued that checks and balances in the Constitution prevented any one of the three branches from acquiring preponderant power?

pls dont guess on it

I need answer now please its missing now asap :D you will be marked brainliest

Can someone plz help me? :(

Juan, a professor of psychology, is developing a measure of skills needed for successful performance at a job. Juan includes items the job supervisor feels are

Given points A (0,0), B (4,0), C (0,2), D (0,0), E (2,0), and F (0,1), which of the following proves that A ABC - A DEF?

HELP!!! Can someone give me a sentence that has the word “Commemorate” !!!! It has to be at least 15 words long! THANKSSS

(a)- π is rational number and 22/7 is rational.(b)- π is irrational and 22/7 is irrational(c)- π is irrational and 22/7 is rational(d)- π is rational and 22/7 i

PLEASE HELP WITH THIS PLEASE

The distance from a lightning bolt is directly proportional to the time elapsed between seeing the lightning bolt and hearing the be thunder. Thus, if you hear