3 years ago

I don’t know whether to add or subtract

Mathematics

1 answer:

rjkz [21]3 years ago

3 0

Answer:

130°-30°=100°

m∠ABD=100°

Step-by-step explanation:

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Answer:

4 feet

Step-by-step explanation:

We know the the area of a triangle can be represented as $\frac{bh}{2}$ .

Since the height is twice the base, we can substitute the value $2b$ in as $h$ in the expression, making it $\frac{b\cdot2b}{2}$ . If the area is 16, we can make the equation

$\frac{b\cdot2b}{2} = 16$

Now to solve for b.

$\frac{2b^2}{2} = 16\\\frac{2b^2}{2}\cdot2 = 16\cdot2\\\\2b^2 = 32\\\\2b^2\div2 = 32\div2\\\\b^2 = 16\\\\b=4$

Hope this helped!

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3 years ago

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Since he completes 10 minutes each day for five days, he completes 50 minutes.

The percentage of his total requirement would be 50/100 = 0.5 = 50%.

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3 years ago

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You need to do 20 divide by 21 to get a decimal. Then if you multiply the decimal by hundred you should get the percentage.

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3 years ago

Luis was worried about his Spanish final exam grade. The test had 200 questions, and he got

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