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2 years ago

A 7-meter by 7-meter square is reduced so that each side is half as long as the original.

Mathematics

1 answer:

Lina20 [59]2 years ago

3 0

Answer:

Step-by-step explanation:

7m ÷ 2 = 3.5m
Part A: New square is 3.5-meter by 3.5-meter
The original square's perimeter is 7x4=28-meter.
The new square's perimeter is 3.5x4=12-meter
Part B: The ratio is 12:28 or 3:7
The original square's area is 7²=49 meter²
The new square's area is 3.5²=12.25 meter²
Part C: The ratio is 49:12.25

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Step-by-step explanation:

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1 year ago

John's commute to work is 20kmhr while Sheri's commute is 500mmin. Who has the fastest commute to work in mihrif 1.61km=1mi? A S

Andreyy89

Answer:

A) Sheri has the faster commute by 6.2 miles/hr.

Step-by-step explanation:

Given

John's commute to work $=20\ km/hr$

Sheri's commute to work $=500\ m/min$

$1.61\ km = 1\ mile$

John's commute to work in miles per hour = $\frac{20\ km}{1 hr}\times \frac{1\ mile}{1.61\ km}= 12.42\ miles/hr$

Sheri's commute to work in miles per hour = $\frac{500\ m}{1\ min}\times \frac{1\ km}{1000\ m}\times \frac{1\ mile}{1.61\ km}\times \frac{60\ min}{1\ hr}= 18.63\ miles/ hr$

We can see that Sheri has a faster commute.

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3 years ago