Is -0.4 a whole number?
•yes
•no
explain why

No

Step-by-step explanation:

-0.4 is not a whole number because a whole number is a number without fractions or decimals. -0.4 is a decimal so it is not a whole number.

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

oof

step-by-step explanation: