MikeRaub MikeRaub

24-07-2019
Mathematics

contestada

I need this answer please

I need this answer please class=

Respuesta :

Аноним Аноним

24-07-2019

Answer:

3a+6b = 45

Multiply by 2

6a +12b = 90.....(1)

2a- 2b = -12

Multiply by 3

6a - 6b = -36 .....(2)

(1)-(2)

18b = 126

b= 7

3a+6b = 45

3a + 6(7) = 45

3a +42 = 45

3a = 3

a= 1

(a,b) = ( 1,7)

Answer Link

Otras preguntas

Put the following equation of a line into slope-intercept form, simplifying all fractions. 18x + 3y = -18

What are some acceptable ways to name an line

Help pleas like please ASAP

PLEASE HELP!!! I'LL GIVE BRAINLIEST AND 22 POINTS!!! Put the following events in the correct order:

tolerance of culture

Give the meaning of environment, population and health education.

if U= π(r+h), find r when U =16/1/2 and h = 2/3/4π = 3/1/7

Temperature is measured in degrees C whereas heat is measured in J m t q

the length of each side of a triangle is in the ratio 4 : 5 : 9. the length of the longest side is 27cm. Find the perimeter of the triangle.

Two lizards with different coloring exist within the same ecosystem. One lives in the trees, and the other prefers hiding among rocks. They are separate species