3 years ago

How to tell if it’s a right triangle from the legs and hypotenuse

Mathematics

1 answer:

mihalych1998 [28]3 years ago

3 0

Use the Pythagorean theorem.

If One leg is a, the other is b, and the hypotenuse is c, then

a² + b² = c²

There ya go

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5. If John, travelling at a constant speed on a stretch of highway, covers 25 miles in 30

anzhelika [568]

Answer:

150 miles

Step-by-step explanation:

We can split 3 hours into six sections of 30 minutes, then multiply those six sections by the 25 miles. 6 times 25 equals 150

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3 years ago

Tim has read 10% of a book. He has 45 more pages to finish. How many pages are there in the book?

Monica [59]

if Tim has read 10% of the book, that means he still hasn't read 90% of it yet, and we know that that 90% is 45 pages, so say the book has a total amount of pages of "x", which is 100%.

$\begin{array}{ccll} pages&\%\\ \cline{1-2} 45&90\\ x&100 \end{array}\implies \cfrac{45}{x}=\cfrac{90}{100}\implies \cfrac{45}{x}=\cfrac{9}{10} \\\\\\ 450=9x\implies \cfrac{450}{9}=x\implies 50=x$