A sound wave in a steel rail has a frequency of 620 Hz and a wave of 10.5 M. What is the speed of sound in the steel?

dd

step-by-step explanation:

dd

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled

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

no

step-by-step explanation: