MATHEMATICS MIDDLE SCHOOL

2/7 x 7/9 use greatest common factor

Answers

Answer 1

Answer:

Answer: 2/9

Step-by-step explanation:

2 × 7

7 × 9

14 ÷ 7

63 ÷ 7

2/9

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Marisa wants to buy a DVD player that runs for at least $150. She already saved $ 80 and plans to save an additional $ 10 each week. Write an inequality that represents this problem and explain your answer in detailed steps.

Answers

x=number of weeks
the inequality is:
10x+80≥150

Now, we solve this inequality:
10x+80≥150
10x≥150-80
10x≥70
x≥70/10
x≥7

Solution: Marisa needs to save at least 7 weeks for she can buy the DVD

The stock market dropped 4 points each day for 7/1/2 days. How many points has it changed since before if dropped?

Answers

I think it would be 30 points because 4 times 7 1/2 is 30. but I don't know for sure.

How can greatest common factors and least common multiples help you work with fractions ?

Answers

They help you by helping to find equivalent fractions. ;-)

15 times as much as 1 fifth of 12

Answers

Answer:

15 times as much as 1 fifth of 12 is 36

Step-by-step explanation:

Given the statement: 15 times as much as 1 fifth of 12

or we can write this as:

15 times as much as 1/5 of 12

''of '' means multiply

"1/5 of 12" means $(1)/(5) * 12$

"times" means $*$

then;

$15 * ((1)/(5) * 12)$

⇒ $15 * (12)/(5)$

⇒ $3 * 12 = 36$

Therefore, 15 times as much as 1 fifth of 12 is 36

15 x (¹/₅ x 12)
The result is 36

Further explanation

The Problem:

15 times as much as 1 fifth of 12.
Write an expression to match, and then evaluate.

The Process:

Here are some early expressions that need attention.

1 fifth is $\boxed{(1)/(5)}$
1 fifth of 12 is $\boxed{(1)/(5) * 12}$

Let us write an expression to match for 15 times as much as 1 fifth of 12.

$\boxed{\boxed{ \ 15 * \bigg((1)/(5) * 12 \bigg) \ }}$

And now we evaluate the expression.

$\boxed{ \ = 15 * \bigg((1)/(5) * 12 \bigg) \ }$

$\boxed{ \ = 15 * (12)/(5) \ }$

We cross out 15 and 5 because they both can be divided.

$\boxed{ \ = 3 * (12)/(1) \ }$

$\boxed{ \ = 3 * 12 \ }$

$\boxed{\boxed{ \ 36 \ }}$

Thus, the result is 36.

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Keywords: 15 times, as much as, 1 fifth of 12, write an expression to match, and then evaluate, cross out 15 and 5, because, they, both, can be divided, the result

4. A dilation of (x,y) → (kx, ky) when 0 <k< 1 has what effect on the figure?What is the effect on the figure when k > 1?

Answers

It depends on what your k is equal to let me know

How do u do this step by step

Answers

You need to use PEMDAS or the Order of Operation. P is parentheses, E is exponents, M is multiplication, D is division, A is addition, and S is subtraction. 8+5 is 13. There are No exponents or multiplication. Divide 13 by 1 and you get 13. So far, you have 1 + 13 - 3 - 13 + 4. If you do the addition you get 18 - 3 -13. 18 - 3 is 15. 15 - 13 is 2. Your answer is 2.

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