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satela [25.4K]
2 years ago
7

Which of the following expressions is equivalent to 7y + 21 ?

Mathematics
1 answer:
Nikolay [14]2 years ago
8 0

Answer:

the answer is 7 ( y + 3) hope this helped

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Which is greater, 4.87 x 10^9 or 9.212 x 10^8? <br> please helpp
STatiana [176]

Answer: 4.87 x 10^9  is greater than 9.212 *10^8

Step-by-step explanation:

4.87 x 10^9  is greater than 9.212 *10^8 because it has the greater exponent.

4.87 * 10^9 =  4,870,000,000

9.212 *10^8= 921,200,000

4,870,000,000 > 921,200,000

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You have $75.00 to spend at the mall. You want to buy a hoodie that costs $80.00. The store is having a 20%-off sale. (There is
lesya692 [45]
Ok so find 20% off and see if less tha 75
percent means parts out of 100
20% means 20/100=1/5

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off means subtract
disctoun tof 16 is 80-16=64
64<75

how much left over
75-spent=left over
75-64=11


anwwer is $11 left over and enough money to buy
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