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Briannadavis03
20.03.2021 •
Mathematics
Help please :)
V74
V74
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Ответ:
x =10
Step-by-step explanation:
Using the pythagoras theorem om one of the right triangle;
(√74)² = (x/2)²+7²
74 = (x/2)²+49
(x/2)² = 74 - 49
(x/2)² = 25
Square root both sides
√ (x/2)² = ±√25
x/2 = ±5
x = 2 * ±5
x = ±10
Hence the value of x is 10
Ответ:
When we are writing a ratio or fraction, we are comparing two different quantities.
Imagine that a track athlete has to run 3 miles for every day of practice. We could write the ratio 3:1.
Imagine that your parents are going to pay you $15 for every A on your report card. We could write the ratio 15:1
The key words are "For Every".