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Paraphin [41]
3 years ago
5

I need to write this problem out on paper and show my work. The lesson says to times both decimals by 10 to make them whole numb

ers but I don't understand, thank you!

Mathematics
2 answers:
ivanzaharov [21]3 years ago
8 0
When you multiply a decimal by 10, you move the decimal two places to the right.( this is so you can divide properly).
for ex.
0.07 is going to be 7 when you multiply by 10. you do the same for 1.68, and get 168.
now you can divide!:)
7<span>÷168</span>
galben [10]3 years ago
6 0
You actually need to multiply both numbers by 100 to make them whole numbers. When you multiply by 10 the decimal moves 1 place to the right. When you multiply by 100 you move the decimal on both numbers 2 places to the right so the problem becomes

168 ÷ 7
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Tomas is making trail mix using granola and walnuts. He can spend a total of $12 on the ingredients. He buys 3 pounds of granola
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Answer:

Tomas added 6 to both sides of the equation instead of subtracting 6.

Step-by-step explanation:

Tomas is making trail mix using granola and walnuts. He can spend a total of $12 on the ingredients. He buys 3 pounds of granola that costs $2.00 per pound. The walnuts cost $6 per pound. He uses the equation 2x + 6y = 12 to represent the total cost, where x represents the number of pounds of granola and y represents the number of pounds of walnuts. He solves the equation for y, the number of pounds of walnuts he can buy.

Given:

2x + 6y = 12

where

x = number of pounds of granola y = number of pounds of walnuts

The correct solution to the problem

x = 3 pounds

2x + 6y = 12

2(3) + 6y = 12

6 + 6y = 12

Subtract 6 from both sides

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6y = 6

Divide both sides by 6

y = 6/6

= 1

y = 1 pound

Tomas added 6 to both sides of the equation instead of subtracting 6.

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3 years ago
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