Well... with the information you are given you just have to assume they are congruent triangles. The first picture looks like a right triangle, but the angle is 100 not 90... so it wouldn't actually look like that.
So for the missing angle all you do is 180= 100+ 55 + x
x=25
Then just match up the angles with the other triangle, they would be the same. K with F, J with G, and so on
You can use the simple interest formula.
S = Prt
S = Simple Interest
P = Principle = 6000
r = rate = 7% = .07
t = time = 4
S = 6000 * .07 * 4
S = $1680
50% = 1/2
so 25,000 / 2 = 12,500
Answer:
The coefficient 1.5 means her winning distance is 1.5 times the mean (add them up and divide the total number by the number of numbers) of her three best practices.
Some other helpful stuff:
Let's say Rosa's three practice distances were 1.6 meters, 1.7 meters, and 2.1 meters. To get the mean of these, add them up(5.4) and divide by the number of numbers, three(1.8). Let's say her winning distance was 2.7. If you divide the winning time by the mean of her three best practices, you get 1.5. This means that 2.7 = 1.5(1.8), or, 2.7 = 1.5M.
Answer:
60 seconds in a minute, so
5460 ÷ 60 = 91 beats per second
