Answer:
D) The number of bacteria decreases by 7% each hour.
Step-by-step explanation:
Exponential functions describe situations where values do not increase at a linear or constant rate. Adding or subtracting every year or hour will result in a linear function, so A, B, and C are incorrect.
Answer:
The diameter is 1 unit.
Step-by-step explanation:
The formula for circumference of a circle of diameter d is C = (3.14)d, where 3.14 is a close approximation of π (pi).
Here the circumference is given and is 3.14 units. Because C = 3.14d,
the diameter of this circle is 3.14/3.14, or simply 1 (unit).
Answer:
The factors of 32 are 32, 16, 8, 4, 2, 1. The factors of 72 are 72, 36, 24, 18, 12, 9, 8, 6, 4, 3, 2, 1. The common factors of 32 and 72 are 8, 4, 2, 1, intersecting the two sets above.
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Answer:
P=50
Step-by-step explanation:
First use the formula for perimeter which is P = 2l + 2w. Then plug in to find your answer.
STEPS:
P = 2l + 2w
P=2(13)+2(12)
P=26+24
P=50
To find a percent of a number, multiply the percent by the number.
First we find the number of pennies.
40% of 220 =
= 40% * 220
= 0.4 * 220
= 88
88 coins are pennies.
220 - 88 = 132
132 coins are not pennies.
Now we find 25% of 132.
25% of 132 =
= 25% * 132
= 0.25 * 132
= 33
33 coins are partners.
(Did you mean quarters instead of partners?)
