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UkoKoshka [18]
3 years ago
11

I need help with this question , 13 + 7x = 27

Mathematics
2 answers:
Usimov [2.4K]3 years ago
7 0
13 + 7x = 27
7x=14
x=2

Hope this helps :)
galina1969 [7]3 years ago
3 0

Answer:

x=2

Step-by-step explanation:

27-13=14

14÷7=2

therefore x is equal to 2

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Answer:

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Step-by-step explanation:

3 0
3 years ago
A number increased by a% and decreased by 80% is 400. What is the number?
vladimir2022 [97]

Answer:

If we have a given number N, and we increase it by x%, then the new number is:

N + (x%/100%)*N

While if we decrease it by x%, the new number will be:

N - (x%/100%)*N

Now, we know that:

"A number increased by a% and decreased by 80% is 400. What is the number?"

First, we can not solve the problem, because we have two unknown values, the original number and the "a%", which I guess is a typo.

So, to be general with my answer, let's assume that the actual question is:

"A number increased by 50% and decreased by 80% is 400. What is the number?"

Then, if our original number is N and we increase it by 50%, the new number will be:

N + N*(50%/100%)

N + N*0.5

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N*(1.5)

Now we decrease it by 80%, and that will be equal to 400, then:

N*1.5 - N*(1.5)*(80%/100%) = 400

N*1.5 - N*1.5*0.8 = 400

N*(1.5 - 1.5*0.8) = 400

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N = 400/0.3 = 1,333.33...

Remember that this is a kinda general solution, so you can understand how to solve this type of problem.

4 0
3 years ago
Julio wants to break his school’s scoring record of 864 points during his 24-game basketball season. During the first 8 games of
Alecsey [184]

Answer:

Hello There the Correct answer is 8 + 24 x greater-than 864.

<h3> Explanation</h3>

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7 0
4 years ago
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In this case, the hypotenuse, c, is 12, because the ladder is 12 feet long (and is the side across from the 90 degree angle created by the ground and the side of the house). You have one of the other sides (3 feet), so you can find the last side by plugging in the numbers:

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Answer:

Step-by-step explanation:

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