Match each scientific notation with the appropriate number

Answers

Answer 1

Answer:

Answer:

wheres the answer choices

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Navor has $800 and is spending $30 per week. Rashid has $150 and is saving $20 per week. In how many weeks will Nabor and Rashid have the same amount of money?

Answers

They will have the same amount of money at week 13 with $410 for each of them

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Define x :
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Let x be the number of weeks needed.

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Navor :
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Navor has $800 and is spending $30 per week:
800 - 30x

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Rashid :
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Rashid has $150 and is saving $20 per week:
150 + 20x

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Solve x:
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800 - 30x = 150 + 20x
50x = 800 - 150
50x = 650
x = 13

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Answer: They will have the same amount of money after 13 weeks.
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How many zeros will be in the product of 7 x 5000

Answers

three zeros will be the product

there will be 3 zeros

35 girls and boys went walking. The ratio is 5 girls to every 2 boys. How many boys are there?

Answers

Set up a proportion:

In a sample of 5:2, you have 7 kids in all.

So the the ratio of boys to kids in a sample of 7 is 2:7.

So set up a proportion:

$(2)/(7)$ = $(X)/(35)$

7x =70

X = 10

Therefore, 10 of the boys went walking.

$5x-\ girls\n\n2x-\ boys\n\n5x+2x=35\n\n7x=35\ \ \ | divide\ by\ 7\n\nx=5\n\nThere\ are\ 10\ boys.$

A grocery store sells three different quantities of sugar. A pound bag costs $1.10, a 2 pounds of a bag costs $1.98,and a 3 pounds of a bag costs $2.85. Describe how the unit cost changes as the quantity of sugar increases.