4 years ago

What is the length of EF?

1 answer:

8 0

Due to the Pythagorean Theorem, the answer will be the square root of 500. Because the Pythagorean theorem says a^2 + b^2 =c^2 so this means 10^2 + 20^2 = c^2 So 100 + 400 = 500. Now we need to find the square root of 500 to find C. So the square root of 500 is 22.36

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3 1/4 - 1 3/5 | please help !!

Luba_88 [7]

Answer:

Step-by-step explanation:

Step: 1: Convert mixed fraction to improepr fraction.

Step: 2 : Find the LCM of 4 , 5 = 20

Step 3: Find equivalent fractions with denominator as 20

Step 4: Now subtract.

$3\dfrac{1}{4}-1\dfrac{3}{5}=\dfrac{13}{4}-\dfrac{8}{5}$

$\sf = \dfrac{13*5}{4*5}-\dfrac{8*4}{5*4}\\\\\\ = \dfrac{65}{20}-\dfrac{32}{20}\\\\\\ = \dfrac{65-32}{20}\\\\\\ = \dfrac{33}{20}\\\\ \\ = 1 \dfrac{13}{20}$