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Oxana [17]
2 years ago
14

Which situation is an example of an observational study?

Mathematics
1 answer:
jarptica [38.1K]2 years ago
8 0

Answer: this is how i feel about the answers A 80% b 0% c 90% d 0%

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The expression 3xy+12y-5x+7w has how many terms in polynomial ??
bulgar [2K]

Answer:

4

Step-by-step explanation:

8 0
2 years ago
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SIMPLIFY USING THE DISTRIBUTIVE PROPERTY OF RATIONAL NUMBERS<br> 1/5+ (2/5+3/5)
Lemur [1.5K]

Answer:

6/5

Step-by-step explanation:

1/5 + (2/5 + 3/5)

solve for the bracket first

1/5 +(2+3/5)

1/5 + (5/5)

1/5 + 1

1+1*5/5

6/5

another method

1/5 + (2/5 +3/5)

open brackets)

1/5 + 2/5 + 3/5

since their denominator are same u can add their numerator

1+2+3/5

6/5

4 0
2 years ago
A bank contains 35 coins, all nickels and quarters. The total value of coins is $8.15. How many of each coin does the bank conta
Lina20 [59]

n + q = 35

n = 35-q

0.05n + 0.25q = 8.15

0.05(35-q) +0.25q = 8.15

1.75 -0.05q + 0.25q =8.15

1.75 + 0.20q = 8.15

0.20q = 6.40

q = 6.40 / 0.20 = 32

32 quarters and 3 nickels

5 0
3 years ago
Richard's weekly gross pay is $1,600. He pays 25% in federal income tax and 9% in state income
BlackZzzverrR [31]
His gross pay will be 9%
5 0
2 years ago
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Help asap plsss.......
Yakvenalex [24]

Answer:

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