lvfd1416 lvfd1416

12-03-2017
Mathematics

contestada

Solve this system of equations using the addition method.
.5m + .7n = 6.4
.2m - .7n = .6

Respuesta :

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

Otras preguntas

One of the challenges of wind power is _____. the location of wind farms the ongoing cost of wind power that it adds carbon to the atmosphere as global warming

Does rate of change = slope? If so how? If not why?

Why are governors sometimes considered an important part of the state's judicial system?

the total all of the chemical reactions an organism needs to survive is known as

three times the square of a non-zero number is equal to twelve times the number

What qualities led to America’s exceptional success as a democratic government?

What is the heaviest alkaline earth metal?

Convert 0.74 kcal/min to cal/sec. Show a step-by-step solution.

Grant bought a computer game for $32.00 plus 8% tax. How much would you pay? F.$37.60 G $34.56 H 34.50 J 35.50

_______________is defined as the greatest amount of force that a muscle group can exert in a single effort. (1 point) muscular endurance muscular strength flexi