There are twice as many boys as girls in Ms. Lyn's chorale group. When 3 girls join the chorale, the new group has 24 members. How many boys and girls were there in the original group? ​

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Step-by-step explanation:

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13