Answer:
40
Step-by-step explanation:
Ratio of cars to total:
32:80
so we can make another ratio with x
x:100
now make them fractions and cross-multiply
32/80 = x/100
32(100) = 80x
80x = 3200
x = 40
Answer:
Factor the numerator and denominator and cancel the common factors.
Exact Form:
2
3
√
3
−
3
√
18
Decimal Form:
0.26375774
Answer: Since the dependent variable is the height in cm, and the independent variable is the color of light, then a testable question could be "Will the color of a lamp affect the height of plants?"
Answer:
50, 60, 50, and 60
Step-by-step explanation:
xy = 3000
2x + 2y = 220
Rewrite the second equation
y = -x + 110
Substitute this into the first equation.
x(-x + 110) = 3000
-x^2 + 110x - 3000
Divide by -1
x^2 - 110x + 3000
(x - 60) (x - 50)
x = 60, 50
When x = 60, y = 50 and vice versa, so the sides are 50, 60, 50, and 60.
Answer:
As a percent: 115%
As a decimal: 1.15
As a fraction: 
Step-by-step explanation:
<u>Percentages</u>
Suppose Michael spends some amount of money on food, and that money is set at 100%. He leaves a 15% tip for the waitress.
Thus, he is really paying 100%+15% = 115% of the original price.
To express a percentage as a decimal, we just divide by 100:
115% = 115/100 = 1.15
The same division should be simplified instead of operated to express the percentage as a fraction:
115% = 
Simplifying by 5:
115% =
Summarizing:
As a percent: 115%
As a decimal: 1.15
As a fraction:
