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Talja [164]
3 years ago
15

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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Jason had to replace the floor of a triangular portion of his dining room. The portion had a height that was twice as high as th
Eva8 [605]

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!

3 0
3 years ago
Bryce has to complete 100 minutes of writing every ten days. He writes for 10 minutes each day. What fraction of his writing req
Sergio [31]
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%.
5 0
3 years ago
Read 2 more answers
How do i calculate percent accuracy? I got 20 questions out of 21 correct but I need to figure out the percent accuracy for anot
Mandarinka [93]
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.
7 0
3 years ago
Luis was worried about his Spanish final exam grade. The test had 200 questions, and he got
rodikova [14]

Answer:

Luis:

\frac{175}{200} \times 100\% = 87.5\%

Marina:

\frac{130}{150}  \times 100\% = 86.6\%

Answer: Marina got the better percent score than Luis

Marina:

7 0
3 years ago
Isabella is travelling in Brazil during the summer, She knows that a 15-minute phone call home to her family costs $45.85 and a
choli [55]
19 minutes ..
Divides 45.85 by 15 you will get 3 same for the other cost- the divide 3 by 55.81 and you get 19
7 0
3 years ago
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