3 years ago

-7x-5(4x+8)=149 how do i solve this problem

Mathematics

2 answers:

Alexxx [7]3 years ago

7 0

-7x-5(4x+8)=149
Distribute
-7x-20x-40=149
Simplify
-27x-40=149
Add
-27x=189
Divide
X=-7

VMariaS [17]3 years ago

7 0

Distribute the -5.
Combine like terms.
Add 40 to both sides.
Divide by -27
( you get -7)

You might be interested in

2sinxcosx = cosx solve for x, how can i do it

VladimirAG [237]

$2\sin x\cos x=\cos x\\\\2\sin x\cos x-\cos x=0\\\\\cos x(2\sin x-1)=0\iff\ \cos x=0\ or\ 2\sin x-1=0\\\\\cos x=0\ if\ x=\dfrac{\pi}{2}+k\pi\\\\2\sin x-1=0\\\\2\sin x=1\\\\\sin x=\dfrac{1}{2}\ if\ x=\dfrac{\pi}{6}+2k\pi\ or\ x=\dfrac{5\pi}{6}+2k\pi\\\\Answer:\boxed{x=\dfrac{\pi}{2}+k\pi\ or\ x=\dfrac{\pi}{6}+2k\pi\ or\ x=\dfrac{5\pi}{6}+2k\pi\ /k\in\mathbb{Z}/}$

7 0

4 years ago

A painter is going to paint the rooms of a building. The painter has used 80 gallons of paint and has painted 32% of the rooms.

timurjin [86]

Answer:

30 gallons

Step-by-step explanation:

4 0

3 years ago

Help!!plzzzzzzzzzz!!ASAP!!

katrin2010 [14]

A and B are congruent.

4 0

3 years ago

What is 46 + 4x equals -6 + 76

posledela

Answer:

Step-by-step explanation:

46+4x=-6+76

46+4x=70

4x=24

x=6

7 0

4 years ago

Read 2 more answers

PLZ HELP ME!!!!!!!!!!!!!

topjm [15]

It is answer #1 the depandent variable is distance, y=25x, the dragonfly will travel 600 miles

8 0

3 years ago