Answer:
4n - 2
Step-by-step explanation:
Greater = 2n
Smaller = 2n - 2
Sum = 2n + (2n - 2)
Sum = 2n + 2n - 2
Sum = 4n - 2
Answer:
1%
Step-by-step explanation:
We need our two numbers to have the same units. Since one number is in cents and the other is in dollars, we should change one of them. It could be either one.
Both numbers in cents:
50/4000
OR, both numbers in dollars:
.50/40.00
Either of these will work. Divide, you will get a decimal answer. Then multiply by 100 to change to a percent.
50÷4000 (OR .5/40)
= 0.0125
times by 100
0.0125 × 100
= 1.25% but the directions said to round to the nearest whole number, that's 1%
Yes.
27/51-18/34=0
if u subtract something from something and u get zero, it means those 2 numbers are equal.
Answer: $0.42
Step-by-step explanation:
The rate at which the average cost of 1 gallon of gasoline is increasing is exponential. We would apply the formula for exponential growth which is expressed as
y = b(1 + r)^ t
Where
y represents the cost after t years.
t represents the number of years.
b represents the initial cost.
r represents rate of growth.
From the information given,
b = $0.31
r = 3% = 3/100 = 0.03
t = 1972 - 1962 = 10 years
Therefore,
y = 0.31(1 + 0.03)^10
y = 0.31(1.03)^10
y = $0.42
Answer:
81 meters.
Step-by-step explanation:
The height (in meters), h(x) of a hovercraft x seconds after takeoff, is modeled by:
![h(x)=-3(x-3)^2+108](https://tex.z-dn.net/?f=h%28x%29%3D-3%28x-3%29%5E2%2B108)
We are to determine its height at the time of takeoff.
Now, at the time of takeoff, x=0.
We substitute x=0 to solve for h.
![h(0)=-3(0-3)^2+108\\=-3(-3)^2+108\\=-3(9)+108\\=-27+108\\=81$ meters](https://tex.z-dn.net/?f=h%280%29%3D-3%280-3%29%5E2%2B108%5C%5C%3D-3%28-3%29%5E2%2B108%5C%5C%3D-3%289%29%2B108%5C%5C%3D-27%2B108%5C%5C%3D81%24%20meters)
The height of the hovercraft at takeoff is 81 meters.