If a car tire has a diameter of 32
inches, what is the approximate circumference of the tire?

Step-by-step explanation:

The length of a circumference is defined as

Where is the length, and is the radius of the circumference.

Additionally, we know that the radius is half of the diameter, which in this case is 32 inches. So, the radius is

Replacing this radius in the expression of the length, we have

Therefore, the circumference of the tire is approximately 100.48 inches.

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

investment b is an ordinary annuity with $3,909.64 in the account after one year.

step-by-step explanation: