4. Find the value of the expression below for r=4 and t=2.
2 answers:
Answer:
(a) 9
Step-by-step explanation:
r = 4; t = 2
t³ - r + 20 ÷ r =
= 2³ - 4 + 20 ÷ 2
Order of operations says do the exponent first.
= 2 × 2 × 2 - 4 + 20 ÷ 4
Now do the multiplications and the division.
= 8 - 4 + 5
Do the subtraction.
= 4 + 5
Add.
= 9
Answer:
(a) 9
Step-by-step explanation:

substitute r = 4, t = 2

simplify

cubic of 2 is 8

simplify

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