3 years ago

Solve each equation .just write the number answer 12.-b= 12.5 -0.1 = 10c

Mathematics

1 answer:

melamori03 [73]3 years ago

6 0

The first one is b=-0.5

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Marcel made an error when he used the distributive property to write an equivalent expression. which sentence describes the erro

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I think he made a mistake in the first one

Step-by-step explanation:

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2 years ago

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Vitek1552 [10]

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Step-by-step explanation:

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3 years ago

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2 years ago

one number is 7 more than twice the other number. if the sum of the two numbers is 19, find the two numbers

topjm [15]

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4 and 15

Step-by-step explanation:

Let the two numbers be a and b.

The sum of the two is 19. Therefore:

$a+b=19$

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$a=7+2b$

Solve for the system of equations. Substitute the second equation into the first:

$a+b=19\\(7+2b)+b=19$

Subtract 7 from both sides:

$2b+b=12$

Combine like terms:

$3b=12$

Divide by 3:

$b=4$

So, b is 4.

And since they add up to 19, this means that a is:

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4 years ago

What pair of factors of −42 has a sum of 1? PLEASE HELP

anastassius [24]

Answer:

-6 and 7

Step-by-step explanation:

-6 and 7 multiply to be -42.

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Their sum is 1!

Hope this helps

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3 years ago

Read 2 more answers