Answer:
x = √149 km
Step-by-step explanation:
Pythagorean theorem
x^2 = 10^2 + 7^2
x^2 = 100 + 49
x^2 = 149
x = √149
We can use ratios and the cross-multiply-divide to find this.
The ratio 21:5 is avaliable via the question. We then need to compare that to the ratio x:100, the 100 being the percent and the x being the number of airplane parts.
21/5 = x/100
We can then solve for x to find the number of airplane parts. First we multiply by 100 on both sides to get 2100/5 = x. Therefore x = 420 and there are 420 airplane parts.
Answer: 1/4
Step-by-step explanation:
Let the volume of mixture (6%fat) in cup is 100cc
x cc be the volume of cream (18% fat) in the mixture.
∴
(100−x) cc be the volume of milk (2% fat) in the mixture.
x * 0.18+(100−x) * 0.02=100
⋅0.06 or 0.18x − 0.02x = 6−2 or 0.16x
= 4 or x=25 cc = 25%
The bike is now $500. The price goes down by 20% each year.
500(0.20) = 100
The bike decreases by $100 each year.
After 5 years at $100 less per year, the bike will be $0.00.
Answer:
Step-by-step explanation:
Givens
L = 4/5 m
w = 3/5 m
Formula
A = L * w
Solution
Area = 4/5 * 3/5
Area = (4 *3 ) / (5 * 5)
Area = 12/ 25 m^2
