Answer
50mph
Step-by-step explanation:
rt=d use the rate times time equals distance method.
it gives us the time=4, use an exponent to represent the rate(since that's the information we don't have equals 200km
x times 4 = 200km
4x = 200km
divide by 4 to leave the exponent by itself
x = 50km
We are given with the mathematical expression <span>sinx=cos(48) and is asked in the porblem to determine the value of variable x. In this case, we solve first cos 48 which is equal to -0.64. to determine x, we use inverse sin, that is sin-1 (-0.64) = x; x= 42 degrees. x is equal also to 90-48 according to complementary postulate.</span>
The main formula of a suface area of a cube is as follow:
A = 6x a², where a is the edge length
if a= 1.5, so A= 1.5² x 6= 13.5
so the answer is A= <span>13.5</span>
Area divided by pi(2.25 squared/pi), which is 1.611
