3 years ago

Can you help me with these?

Mathematics

1 answer:

umka2103 [35]3 years ago

6 0

Answer:

1: x + 5=12 -> x=7

2: 7x = 21 -> x=3

3: b - 2/3 = 5/6 -> x=3/2

4: 1/5m = 20 -> 100

5: 45 = 3(x + 1) -> x = 14

6: 22.5 = 1.5x -> x = 15

Step-by-step explanation:

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Further explanation:

Speed is the rate at which an object changes position with respect to time.

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$Speed = \frac{distance}{time}\\= \frac{30\frac{1}{5}}{\frac{2}{3}} \\=\frac{\frac{151}{5}}{\frac{2}{3}} \\=\frac{151}{5}*\frac{3}{2}\\=\frac{453}{10}\\=45.3\ miles\ per\ hour$

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Keywords: Speed, distance

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