1.which ratio forms a proportion with 12/15?

a) 21/28
b) 20/25
c) 30/50

2.for the breaststroke, emily swims 100 meters in 62 seconds. if mike swims at the same rate, how long will it take him to swim 200 meters?

a)120 seconds

b)124 seconds

c)118 seconds

3.which pair of ratios forms a proportion?

a) 7/8 , 15/18
b) 1/2 , 14/28
c) 4/5 , 10/13

4.which ratio forms a proportion with 15/45?

a) 3/5
b) 3/12
c) 3/9
d) 1/31

5.which pair of ratios forms a proportion?

a) 5/9 , 15/27
b) 3/10 , 15/25
c) 7/10 , 15/18

answer: 5100 just subtract

step-by-step explanation:

this is the formula: v = the value of investment at the end of the time period

p = the principal amount (the initial amount invested)

r = the annual interest rate

n = the annual frequency of compounding (how many times a year interest is added)

t = the number of years the money is invested

^ means raise to the power of

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the above table 1 will calculate the population size (n) after a certain length of time (t). all you need to do is plug in the initial population number (no), the growth rate (r) and the length of time (t). the constant (e) is already entered into the equation. it stands for the base of the natural logarithms (approximately 2.71828). growth rate (r) and time (t) must be expressed in the same unit of time, such as years, days, hours or minutes. for humans, population growth rate is based on one year. if a population of people grew from 1000 to 1040 in one year, then the percent increase or annual growth rate is 40/1000 x 100 = 4 percent.

step-by-step explanation: