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3 years ago

Which expression is equivalent to (8a-3b+7)-(2a+b-4)?

Mathematics

1 answer:

pogonyaev3 years ago

7 0

8a-3b+7-2a-b+4=6a-4b+11

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3 years ago

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4 years ago

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laura walks3_5mile to school each day. lsaiahs walk to school is 3 times as long as lauras.how far does lsaiah walk to school ea

ahrayia [7]

In this question, it is important to understand the words of the problem and then note down the details already provided in the problem. This will make the solving of this problem easier.Now coming to the details already given.

Distance walked by Laura to reach school each day = 3/5 mile

Distance walked by Isaiah to reach school is 3 times that of Laura and it is already given in the question.

Then

The distance walked by Isaiah to reach school each day = (3/5) * 3

= 9/5

= 1 4/5

So Isaiah walks a distance of 1 4/5 miles each day for reaching school. I hope that the procedure of doing such problems is clear to you and yiou can attempt such problems in future without needing any help.

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3 years ago

Kaitlyn solved the equation for x using the following calculations. Negative 5. 4 x = 12. 2. Minus 5. 4. X = 6. 8. What error, i

Sladkaya [172]

The value of x is 17.6. She should have added 5.4 on both sides to get the correct value of x. Then the correct option is A.

<h3>What is the linear system?</h3>

A Linear system is a system in which the degree of the variable in the equation is one. It may contain one, two, or more than two variables.

Kaitlyn solved the equation for x using the following calculations.

$\rm -5.4 + x =12.2$

and she did the calculation will be

$\rm -5.4x = 6.8$

The mistake she did in this equation is the plus sign is removed between the -5.4 and x. And she subtracted 5.4 from 12.2.

The correct solution of the equation is to add both sides 5.4. Then we have

$\begin{aligned} \rm -5.4 + x+5.4 &=12.2+5.4\\\\\rm x &= 17.6\end{aligned}$

More about the linear system link is given below.

brainly.com/question/20379472

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3 years ago