MATHEMATICS HIGH SCHOOL

Five times a number is the same as 30 more than 8 times the number. Find the number.If n is "the number," which equation could be used to solve for the number?

3n = 30
5n + 8n = 30
5n = 8n + 30

Answers

Answer 1
Answer:

Answer:  the correct option is

(C) 5n=8n+30.

Step-by-step explanation:  Given that five times a number is the same as 30 more than 8 times the number.

We are to find the number.

Also, if the number is denoted by n, then we are to select the equation that could be used to solve for the number.

Since n is the given number, so five times the number is written as

5* n=5n.

Also, 30 more than eight times the number is written as

8* n+30=8n+30.

Since both the expressions are same, so we get

5n=8n+30\n\n\Rightarrow 8n-5n=-30\n\n\Rightarrow 3n=-30\n\n\Rightarrow n=-(30)/(3)\n\n\Rightarrow n=-10.

Thus, the required number is -10 and the the equation that is used to solve for the number is 5n=8n+30.

Option (C) is CORRECT.
Answer 2
Answer: Its the last one .. 5n=8n + 30 

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2(3−7)+6=x−14+6 What is the value of x? Please hurry.

Answers

2(3-7)+6=x-14+6 \n \n 2(3 - 7) = x - 14 \ / \ cancel \ 6 \ on \ each \ side \n \n 2 * -4 = x - 14 \ / \ simplify \n \n -8 = x - 14 \ / \ simplify \n \n -8 + 14 = x \ / \ add \ 14 \ to \ each \ side \n \n 6 = x \ / \ simplify \n \n x = 6 \ / \ switch \ the \ sides \ around \n \n

The final result is x = 6.
2(3-7)+6=x-14+6
=6-14+6=x-14+6
=6-6-14+6=x-14+6-6
=-14+6=x-14
=-14+14+6=x-14+14
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Write an inequality for the situation. all real numbers at most –9.5 or at least 5.5A. –9.5 ≤ b ≤ 5.5

B. b ≥ –9.5 or b ≥ 5.5

C. b ≤ –9.5 or b ≤ 5.5

D. b ≤ –9.5 or b ≥ 5.5

Answers

Answer:

option (c) is correct.

The given expression all real numbers at most –9.5 or at least 5.5 is written as   b ≤ –9.5  or  b ≥ 5.5

Step-by-step explanation:

Given  expression all real numbers at most –9.5 or at least 5.5

We have to represent the given expression mathematically and choose the correct from given options.

Consider the given expression  all real numbers at most –9.5 or at least 5.5

Let the real number be represented by b

then the given expression contain two terms

1)  all real numbers at most –9.5  

Mathematically written as  b ≤ –9.5    .....(1)

2) all real numbers at least 5.5

Mathematically written as  b ≥ 5.5       ....(2)

Thus, the given expression   all real numbers at most –9.5 or at least 5.5 is written as   b ≤ –9.5  or  b ≥ 5.5

Thus, option (c) is correct.
Hello,

If b represents any real number,

b<=-9.5
or
5.5<=b


Answer  C

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Answers

4 semicircles of 90º=1 circle

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2) we calculate the area of the circle:
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Answers

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Answers

Answer:

5 3/8

Step-by-step explanation:

Step 1:

0.375 = 3/8

Step 2:

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Answer:

5 3/8

Hope This Helps :)

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Answers

Answer: 25

Step-by-step explanation:

(8(5) + 10) / 2

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The answer would be 25. (8(5)+10 = 50 50/2 = 25. Hope that helped!
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