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r-ruslan [8.4K]
3 years ago
10

Solve 7k÷3=21 The solution is k __

Mathematics
2 answers:
klemol [59]3 years ago
5 0
9
Because 21*3=63
63/7=9
qaws [65]3 years ago
4 0
First, multiply by 3 on both sides:
7k = 63

Divide by 7:
k = 9

So, k = 9
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Todd wants to buy a new video game for $43.31. He has $55.50. The sales tax is 8.5% of the total purchase. Does Todd have enough
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Answer:

  yes

Step-by-step explanation:

We can estimate* that the total price including tax of the game will be less than ...

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Todd easily has enough to pay for the game, including tax.

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You can work this more exactly a couple of ways.

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  2. Most Todd can afford: $55.50/1.085 = $51.15 . . . more than the game price

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* For estimating purposes, we like to use numbers that are easy to compute with. 10% is one such number, as it only requires moving the decimal point.

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