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Lubov Fominskaja [6]
3 years ago
13

Simplify the expression by combining like terms: 4x - 2 - 8x + 1

Mathematics
2 answers:
puteri [66]3 years ago
8 0
The answer is -4x - 1
Pavel [41]3 years ago
6 0

Answer:

-4x-1

Step-by-step explanation:

combine 4x and -8x to make -4x and combine -2 and 1 to make -1

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Your friend buys a skateboard that is on sale for one third off the original price. Your friend spent $36 than the original pric
White raven [17]

Answer:

original price of skateboard = $54

Step-by-step explanation:

Let the original price of the skateboard be x

selling price = one third off the original price = $36

x - (1/3x) = 36

\frac{x}{1} - \frac{x}{3} = \frac{3x-x}{3} = \frac{2x}{3}

\frac{2x}{3} = 36\\2x = 108\\x = \frac{108}{2} = 54

∴ x = 54

5 0
3 years ago
How many times does 20 go to 140
9966 [12]

Answer:

7

Step-by-step explanation:

20 x 7 = 140

5 0
3 years ago
Read 2 more answers
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU B
riadik2000 [5.3K]

Answer:

x=20; y=50 or (20, 50)

Step-by-step explanation:

Substitution means plugging in one variable's value that consists of the opposite variable. Because y=3x-10 is already specified, you can plug it into the second equation's y value. After doing that, it looks like this:

-4x+2y=20→-4x+2(3x-10)=20

Then you would distribute the 3 across the parentheses next to it, like this:

-4x+2(3x-10)=20→-4x+6x-20=20

Then, add like terms, like this:

-4x+6x-20=20→2x=40

Then divide both side by 2 to isolate x.

x=20

Now, you can plug 20 (x) into either equation, but the first one seems simpler so you would pick that. It would look like this:

y=3x-10→y=3(20)-10

Solving would look like this:

y=3(20)-10→y=60-10→y=50

So the answer is x=20; y=50 or (20, 50).

6 0
3 years ago
Read 2 more answers
I need help I don’t understand this
alex41 [277]

This is the solution hope you can understand, i apologize for the bad handwriting

4 0
3 years ago
I neeeeedddddd helppppppp
Eddi Din [679]
The answer is 48 degrees because you add 42 and 90 and then subtract from 180 (total degrees of a triangle)
8 0
2 years ago
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