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ozzi
3 years ago
13

Can anyone help with this:

Mathematics
1 answer:
boyakko [2]3 years ago
3 0
Maybe 3 goals ###################
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What value of X makes the equation true -7x - (-5-x) = -9(2x-1) -1
Bond [772]

Answer:

x = 1/4

Step-by-step explanation:

-7x - (-5-x) = -9(2x-1) -1

-7x + 5 + x = -18x + 9 - 1

combine like terms:

-6x + 5 = -18x + 8

add 18x to each side of the equation:

12x + 5 = 8

subtract 5 from each side:

12x = 3

divide both sides by 12:

x = 3/12 = 1/4

5 0
2 years ago
Solve the equation for x: 3(m+7)=6(m+2)
Morgarella [4.7K]

Answer:

3

Step-by-step explanation:

There is no x in the equation, so I will assume solving for m

Distribute:

3m + 21 = 6m + 12

Subtract 3m and 12

3m = 9

Divide by 3

m = 3

8 0
2 years ago
Read 2 more answers
a rectangular window frame has demotions expressed by 3x and (2x -5). find a simplified expression for its perimeter and determi
Paul [167]

Answer: Simplified Equation (10x-10)

Answer if 3=x is 20

Step-by-step explanation:

the original side lengths are 3x and (2x-5) so multiply both those by 2.

Now you have 6x and 4x-10.

Now combine those and you have 10x-10.

Then plug in 3 for x

3 0
3 years ago
You pick a card, roll a die, and find the sum. How many different sums are possible?
svlad2 [7]

Answer:

6

Step-by-step explanation:

7 0
2 years ago
What is 15% of 140
Mariulka [41]


15% of 40

Of = Multiplication

15% Multiply by 40

Set up a equation

15/100= x/140

Cross Multiply

15* 140= 100*x

2100= 100x

Divide both sides by 100x

2100/100x= 100x/100x

X= 21


3 0
3 years ago
Read 2 more answers
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