HeyItsBry14 HeyItsBry14

25-11-2017
Mathematics

contestada

What value of m makes the equation 5/2(4m-8)- 2(6m -7)= -10 true?
A: -7
B: -6
C: 2
D: 7
(5/2 is supposed to be a fraction)

Respuesta :

WojtekR WojtekR

25-11-2017

[tex]\dfrac{5}{2}(4m-8)- 2(6m -7)= -10\\\\\\\dfrac{5\cdot4}{2}m-\dfrac{5\cdot8}{2}- 2\cdot6m -2\cdot(-7)= -10\\\\\\\dfrac{20}{2}m-\dfrac{40}{2}-12m+14=-10\\\\\\10m-20-12m+14=-10\\\\-2m-6=-10\quad|\cdot(-1)\\\\2m+6=10\\\\2m=10-6\\\\2m=4\quad|:2\\\\\boxed{m=2}[/tex]

Answer C.

Answer Link

Otras preguntas

27.2 kg of a solution containing 18.7 % KCl by mass Express your answer in kilograms using three significant figures.

What does Rule Number Eleven mean and how does it relate to Jackson’s plan (“The Inside Man (literally)”)?

I need help with b and c please and thank you!!

give two logics how a computer is better then man how give two logic how give two logics

Which of the following aquatic organisms is classified as a fish? whale jellyfish octopus shark I think the octopus is right but i am not sure !

Need help please someone answer quick

b) The teacher said, "I am happy." (into indirect speech)

Where should you store full garbage bags? O a. Inside a utility closet O b. In an outdoor dumpster Oc. Next to the kitchen door O d. Under the dishwashing sink

Answer the following regarding Momentum Change and Force 1. Find the force necessary to gain a velocity of 60 m s-1 within 5 minutes, when acted on a mass of 20

Sets A, B, and C are subsets of the universal set U. These sets are defined as follows. U= {f,g,h,p,q,r,x,y,z} A={f,g,p,q} B={g,h,q,x,y} C={p.q.x.y.z} Find (C ∪