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umka21 [38]
3 years ago
5

Help pls its for my homework and i cant find much help help ples :C

Mathematics
1 answer:
lesya [120]3 years ago
6 0

Answer:

C

Step-by-step explanation:

By the definition of negative indices, we can rewrite our expression:

y^-^\frac{4}{3} =\frac{1}{y^-^\frac{4}{3} }

And by the definition of fraction powers, we can rewrite our term:

\frac{1}{y^-^\frac{4}{3} }=\frac{1}{(\sqrt[3]{y})^4}

Not sure if that's what C says because the picture is kinda blurry.

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Select each pair of expressions that are equivalent. 3x + 14 – x + 112 and 4x + 134 2 + 6x and 2(3x + 1) 3(x + 1) – (1 – x) and
Levart [38]

Answer:

Options (2), (4) and (5)

Step-by-step explanation:

Option 1

(3x + 14 - x + 112) and (4x + 134)

Since, (3x + 14 - x + 112) = (3x - x) + (12 + 112)

                                      = 2x + 124

Therefore, (3x + 14 - x + 112) ≠ (4x + 134) [Not equivalent]

Option 2

(2 + 6x) and 2(3x + 1)

2(3x + 1) = (6x + 2)

Therefore, (2 + 6x) = (6x + 2) [Equivalent]

Option 3

3(x + 1) - (1 - x) and (2x + 3)

Since, 3(x + 1) - (1 - x) = 3x + 3 + x - 1

                                  = (3x + x) + (3 - 1)

                                  = 4x + 2

Therefore, (2x + 3) ≠ (4x + 2) [Not equivalent]

Option 4

3x and 4(x + 1) - x - 4

Since, [4(x + 1) - x - 4] = 4x + 4 - x - 4

                                   = (4x - x) + (4 - 4)

                                   = 3x

Therefore, 3x = [4(x + 1) - x - 4] [Equivalent]

Option 5

(5.5 + 2.2x + 3.8x - 4.1) and (1.4 + 6x)

Since, (5.5 + 2.2x + 3.8x - 4.1) = (2.2x + 3.8x) + (5.5 - 4.1)

                                                 = (6x + 1.4)

Therefore, (1.4 + 6x) = (6x + 1.4) [Equivalent]

4 0
3 years ago
NEED ANSWER ASAP WILL GIVE BRAINLIEST
svetoff [14.1K]
1. you cant give brainliest unless 2 people answer...lel

id say the answer is 45cm2 because the shaded areas = to the non shaded one so just multiply it by 2 to get 45cm2 but im not 100% sure
7 0
3 years ago
What is the value of the expression below when m=9 and n=3
Phantasy [73]

Answer:

where is the expression?

4 0
3 years ago
Divide.<br><br> 7045 ÷ 15 I really need help with this plz help
Vlad [161]

Answer:

469.66

Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
There are 8 students in our Math class left to give their presentations. Today
NeX [460]

Answer:

Option A. 56

Step-by-step explanation:

The question talks about chosing 5 presenters out of 8 presenter.

This can be achieved b using the following formula:

nCr = n! /r! (n–r)!

n = 8

r = 5

8C5 = 8! / 5! (8 – 5)!

8C5 = 8! / 5! 3!

8C5 = (8 x 7 x 6) / (3 x 2 x 1)

8C5 = 56

Therefore, there are 56 ways in which the teacher can chose the presenters.

4 0
3 years ago
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