hudson9020 hudson9020

03-01-2018
Mathematics

contestada

4a + 6b = 10 2a - 4b equals 12 what does 12a equal

Respuesta :

anchitthawi anchitthawi

04-01-2018

4a+6b=10 ----(1)
2a-4b=12 ----(2)
(2)*2; 4a-8b=24----(3)
(1)-(3); 6b-(-8b) = 10-24
14b = -14
so b = -1
then 2a-4(-1)=12
2a+4=12
2a = 8
so a = 4
then 12a = 12*4 = 48 #

Answer Link

Otras preguntas

The grades in period 3 Algebra 2 have an average of 82% and vary by 12 percentage points. Formulate an absolute value equation that could be used to solve for t

How did goods produced for the French kings embody prestige?

What is the midpoint of AB? point F point G point H point I

Which expression is equivalent to 510.55? o 52 o 55 O 515 0 550

Let m=118,526.65902. What is the smallest power of 10 that is larger?

Use the expanded accounting equation to compute the missing financial statement amounts.CompanyAssets.=Liability+Owner capital -Owner withdrawals+ Revenues-

A faucet leaks water at a constant rate of 58 quart every 15 minutes.How many quarts does the faucet leak per hour?

Looking at the pictures below how do you think the political map on the left turn into the political map on the right overtime?

help with number 14! it’s due tomorrow.

Max's grandparents have $6000 that they want to give to him and his brother Sam. They like Sam more than Max, so they plan to give Sam 4 times the amount they w