An investment double in 10 years what was its exponential growth rate?

So, our rate of exponential growth is is 6.93 %

Step-by-step explanation:

The formula for exponential growth rate is

A = P .... (1

Here

P = is the initial investment

A = amount after certain time

As we are given after 10 years (t = 10) the investment doubles

so plugging A=2P and t= 10 into equation (1)

2P = P

cancelling P on both sides

2 =

taking natural log on both sides

ln (2) = ln (

ln(2) = 10r(lne)

as ln(e) = 1

ln (2) = 10r

r =

solving the natural log

r = 0.0693

or

r =6.93 %

So, our rate is 6.93 %

how is that middle school

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.