How long is the diagonal of a 9inch by 40 inch rectangle

around 29.7

Step-by-step explanation:

We can make a rectangle two tringles

Using a^2 + b^2 = c^2 we can find the diagonal

40^2 + 9^2 = c^2

800 + 81 = c^2

sqrt 881 is 29.6816442

we can round this to around 29.7

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