lvfd1416 lvfd1416

12-03-2017
Mathematics

Answered

Solve this system of equations using the addition method.

.5m + .7n = 6.4

.2m - .7n = .6

Verified Answer :

rarrininger rarrininger

12-03-2017

.5m + .7n=6.4
+.2m - .7n =.6
----------------------
.7m =7
.7m/.7 =7/.7
m = 10

plug 10 into .5m + .7n=6.4
.5(10) + .7n=6.4
5 + .7n = 6.4
5-5+.7n=6.4-5
.7n= 1.4
.7n/.7=1.4/.7
n=2

Check
.5(10) + .7(2) = 6.4
5 + 1.4 =6.4
6.4=6.4

Answer Link

Related Questions

If the area is 30 inches What is the perimeter

Presidential succession is the plan for removing the Vice President for electing a Vice President from the same party for filling a vacancy in the presidency fo

Mutations can occur in the chromosomes of all types of cells Mutations that are passed on to offspring must occur in A gametes B body cells C stem cells D somat

Which statements about Mycenaean Teotihuacán and Japanese face masks are true Choose only statements that apply to ALL three groups A Some were placed in tombs

An ant crawls at a rate of 2 16 ft per minute At this rate how long does it take the ant to crawl a distance of 5 15 ft Enter your answer as a mixed number in s

3x2 y3 y3 z if x 3 y 2 and z 5

If a graph has an order pair of 624 and all the other points are proportional Write an equation to represent the unit rate

What term is used to describe the interest rate charged by the central bank when it makes loans to commercial banks

Ellys room measures 78 inches by 96 inches Sarahs room measures 66 inches by 108 inches They want to combine their rooms How large will the new room be

how are goods allocated in market economy

Web Analytics Made Easy - Statcounter