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2 years ago

9

REALLY NEED HELP!!! PLZ

1 answer:

lbvjy [14]2 years ago

7 0

I'm confused with your worksheet. Do you have to write the improper fraction next to the Mixed number and write the Mixed number next to the improper fraction?

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Which expressions are equivalent to (7^-2)*(7^6)

Ierofanga [76]

Answer:

D

Step-by-step explanation:

(7^-2)*(7^6)=7^-2+6

......since the base 7 is the same, when u multiply them, you should add the exponents and keep 7 as it is. That will be 7^4, which in equivalent to ans D(7^2)^2.

8 0

2 years ago

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Please help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

lutik1710 [3]

Answer:

What is the question?

Step-by-step explanation:

7 0

3 years ago

[ls help me on this

Lady bird [3.3K]

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3 years ago

At the mall, Leona bought a T-shirt and a book for a total of $34. The book cost $12. How much did the T-shirt cost?

wolverine [178]

Answer:

a. the cost of the t-shirt

b. x+12=34

c. x=22

d. t-shirt cost 22$

7 0

2 years ago

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Hoang has worked as a nurse at Springfield General Hospital for 7 years longer than her friend Bill. Two years ago, she had been

Evgesh-ka [11]

Answer:

$Bill\to 9\ years$

$H \to 16\ years$

Step-by-step explanation:

Let

$H \to Hoang$

$B \to Bill$

Currently:

$H = B + 7$

Two years ago

$H - 2 = 2 * (B -2)$

Required

H and B

We have:

$H - 2 = 2 * (B -2)$

Open bracket

$H -2 =2B - 4$

Add 2 to both sides

$H -2+2 =2B - 4+2$

$H =2B -2$

Substitute $H = B + 7$

$B + 7 =2B -2$

Collect like terms

$2B - B =7+2$

$B = 9$

Substitute $B = 9$ in $H = B + 7$

$H = B + 7$

$H = 9 + 7$

$H = 16$

3 0

2 years ago