Find the value of the expression below for r = 4 and t = 2.
t3 – r + 20 ÷ r
Substituting r = 4 and t = 2 into the expression:
(2^3) - 4 + (20 / 4)
= 8 - 4 + 5
= 8 + 5
= 13
To find the value of the expression t^3 - r + 20 / r for r = 4 and t = 2, follow these steps:
Step 1: Substitute the values of r and t into the expression.
t^3 - r + 20 / r
2^3 - 4 + 20 / 4
Step 2: Simplify the expression using the order of operations (PEMDAS).
2^3 is 2 * 2 * 2, which equals 8.
20 / 4 is 5.
8 - 4 + 5
Step 3: Perform the operations from left to right.
8 - 4 equals 4.
4 + 5 equals 9.
Therefore, the value of the expression t^3 - r + 20 / r for r = 4 and t = 2 is 9.