Add 7 on both sides to then left side cancels out and you end up with 13x=143 then you divide 13 on both sides and get x=11
Answer:
$5.00
Step-by-step explanation:
It doesn't say his money has changed so it is still $5.00
Answer:
1.) 15,708cm^2/s
2) 47,124cm^2/s
3.) 109,956cm^2/s
Step-by-step explanation:
Given the following:
50cm/s is the radius of the ripple per second , that is, radius(r) of ripple after t seconds = speed * time(t)
Speed = 50cm/s
r = 50t
.area of a circle(A) = πr^2
Rate of change of area with radius :
dA/dt = π2r . dr/dt
Speed of ripple created = 50cm/s; this is the rate at which the radius changes with time (dr/dt)
dr/dt = 50cm/s
Rate at which area is increasing with time:
dA/dt = π2r . dr/dt
dA/dt = π2(50t).50
dA/dt = 5000πt
After 1 second:
dA/dt = 5000π(1)
= 15,707.963cm^2/s
After 3 second:
dA/dt = 5000π(3)
= 47,123.889cm^2/s
After 7 second:
dA/dt = 5000π(7)
= 109,955.74cm^2/s
Answer:
0.070 is the standard error of the mean weight in estimating a confidence interval estimate
Step-by-step explanation:
We are given the following in the question:
Sample mean,
= 2.00 ounces
Sample size, n = 71
Alpha, α = 0.05
Population standard deviation, σ = 0.590 ounces
Formula for standard error =

Putting values, we get,

Thus, 0.070 is the standard error of the mean weight in estimating a confidence interval estimate