amandamiro05 amandamiro05

03-02-2019
Mathematics

contestada

two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Respuesta :

prosborough198p2ub41 prosborough198p2ub41

03-02-2019

2x+3y=4
x=2-3/2y

3x+4y=7

3(2-3/2y)+4y=7
6-9/2y+4y=7
-1/2y=1
y=-2

3x+4(-2)=7
3x=15
x=5

So the two numbers are 5 and -2

Answer Link

Otras preguntas

choose the correct way to revise the sentence to achieve parallel structure a successful gymnast must have good coordination, be agile, and strength. a. a succe

Cataract and lens replacement uses ____ different approaches

what is the advantage of timing for a full minute to find your pulse?

What was the clash between Arthur Phillip and benne long

What words can be spelled with the letters h e r a i c?

(2r)^5 typed in expanded form.

how does the media influence us ?

write the following inequality in slope-intercept form. –6x 2y ≤ 42 a. y ≥ 3x 21 b. y ≤ 3x – 21 c. y ≥ 3x – 21 d. y ≤ 3x 21

What event has been blamed on the curse of macbeth?

places with continental climates typically have _______ summers and ________ winters warm; cool hot; cool warm; cold hot; cold