MATHEMATICS HIGH SCHOOL

My sister is 14 years old. my brother says that his age minus 12 equal to my sister's age.

Answers

Answer 1
Answer:

Answer:

26 years old.

Step-by-step explanation:

First lets write an expression for this problem.

That will be 14 + 12 = x

You will do this because it says how the persons sister's age is 14. And the brother says that his age is 12 minus equal to his sister's age. So that's why you use that expression.

So 14 + 12 will give yo 26.

So that means the brother is 26 years old.

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Simplify the following radical expression:
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Answers

Answer:

the answer is 2√  5

Answer:

4.472135955

Step-by-step explanation:

Factor completely 5x(x + 3) + 6(x + 3).(x + 3)(30x)

(x + 3)(5x + 6)

(x + 3)(11x)

Prime

Answers

Answer:

Option 2 is correct.    

Step-by-step explanation:

Given the expression 5x(x + 3) + 6(x + 3).

We have to factorize the expression completely.

Expression is

5x(x + 3) + 6(x + 3)

Take the factor (x+3) common from both the terms, we get

(x+3)(5x+6)

Hence, option 2 is correct.       
5x(x+3)+6(x+3) = (5x+6) (x+3) = (x+3)(5x+6)

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Answers

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Answers

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The triangles shown are similar.What is the value of x?



A.
12

B.
15

C.
20

D.
13

Answers

15, because 3 goes into 9, 3 times and, 4 goes into 12, 3 times therefore x has to follow this rule because these 2 triangles are similar and because it already gives you 5 just take 5*3=15 there is your answer enjoy!=)
(x)/(9)=(5)/(3)\n(x)/(9)=(15)/(9)\nx=15

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Answers

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