Answer:
The speed of sound is 
Step-by-step explanation:
Let
x-----> the speed of sound
we know that
so
solve for x
Answer:
-3, uh its a short answer
Answer:
Step-by-step explanation:
If two variables are directly proportional, it means that an increase in the value of one variable would cause a corresponding decrease in the other variable. Also, a decrease in the value of one variable would cause a corresponding increase in the other variable.
The time, t, required to drive a fixed distance varies inversely as the speed, r. By introducing a constant of variation, k(the fixed distance), the expression becomes
t = k/r
It takes 8 hr at a speed of 15 km/h to drive a fixed distance. It means that
8 = k/15
k = 8 × 15 = 120
The equation becomes
t = 120/r
Therefore, the time it will take to drive the same distance at a speed of 29 km/h is
t = 120/29 hours
Converting to minutes, it becomes
120/29 × 60
= 248. 28 minutes
248 minutes, 28 seconds
192 quarts there are 4 quarts in 1 gallon
Answer:
The answer is (b) ⇒
Step-by-step explanation:
∵ 
∵ √x² = x ⇒ that means to cancel the square root divide
the power by 2
∴ 
∵ √4 = 2 ⇒ √2×2 = √2² = 2
∵ √c³ = 
∴ 
∴ 
∵ In the same base with multiplication we add the power,
in same base with division we subtract the power
∴ 
⇒ 
∴ The answer is (b) ⇒ 
