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VashaNatasha [74]
3 years ago
12

Can somebody help me with number 4 ASAP!! Please explain!

Mathematics
1 answer:
adelina 88 [10]3 years ago
4 0
The anwser for NO.4 is (2X+5)(2X-5)
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There are 84 boys in the 6th grade class. If boys make up 30% of the 6th graders, how many students are in this whole 6th grade
koban [17]
<h3>Answer:  280</h3>

Work Shown:

x = number of students in the 6th grade class

30% = 30/100 = 0.30

30% of x = 0.30x this is equal to 84 since "30% of the 6th graders are boys (and there are 84 boys in sixth grade)", so we say 0.30x = 84

Divide both sides by 0.30 to isolate x

0.30x = 84

0.30x/0.30 = 84/0.30

x = 280

So there are 280 students overall in the 6th grade class.

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3 years ago
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wolverine [178]

Answer:

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Step-by-step explanation:

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3 years ago
Jonas restaurant bill was $25.00. The sales tax was 7%. He left his server a 15% tip. How much did he pay altogether?
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Answer:

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Ron purchases $32,000 worth of stock on his brokers advice and pays his broker a 1.25% broker fee. How much did he pay his broke
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