2 years ago

Three-sevenths of a number is 21. Find the number.

Mathematics

1 answer:

expeople1 [14]2 years ago

4 0

Answer:

the number is 49

Step-by-step explanation:

please mark me brainly please!!!

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katen-ka-za [31]

Answer:

$AB=4.41$

Step-by-step explanation:

Use the cosine ratio, $cosine=\frac{adjacent}{hypotenuse}$ . Insert the values:

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Isolate x. Multiply both sides by x:

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Divide both sides by cos 25:

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Insert into a calculator:

$x=4.414$

Round to the nearest hundredth:

$x=4.41$

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