3 years ago

Which polygons are congruent?

1 answer:

4 0

Two polygons are congruent<span> if they are the same size and shape - that is, if their corresponding angles and sides are equal. Move your mouse cursor over the parts of each figure on the left to see the corresponding parts of the </span>congruent<span> figure on the right.</span>

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What is the circumference of a circle whose area is 100<img src="https://tex.z-dn.net/?f=%20%5Cpi%20" id="TexFormula1" title=" \

STatiana [176]

$S=100\pi\\\\ \pi r^2=100\pi \ |:\pi\\\\ r^2=100 \\\\ r=\sqrt{100} \ , \ r > 0\\\\ r=10\\\\ C=2\pi r=2\pi \cdot 10=20\pi$

5 0

3 years ago

48 feet = how many yards

enot [183]

1 yard = 3 feet

48/3= 16 yards

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3 years ago

.The temperature was 80∘F and then fell 20∘F. 2.The temperature was -13∘F and then rose 9∘F. 3.The temperature was -5∘F and then

stellarik [79]

Answer:

1. 60°f 2. -4°f 3.-13°f

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3 years ago

Two trains leave towns 471 miles apart at the same time and travel toward each other. One train travels 21 miles per hour slower

nadya68 [22]

Let the slower train's velocity be x-21

Let the faster train's velocity be x

We know that the approach speed is the sum of both speeds, so x+x -21= 2x-21.

The approach rate is given by Distance/time = 471/3 = 157mpH

x+x-21=157

2x=157+21

2x=178

x=89mph

The slower train is travelling 89-21 = 68mph

The faster train is travelling 89mph.

7 0

1 year ago

8×1+5×(1/10)+9×(1/1,000)

dybincka [34]

8×1+5×(1/10)+9×(1/1000)
8+5×(.1)+9×(.001)
8+.5+.009
Answer is 8.509

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3 years ago