Respuesta :

fieryanswererft

Answer:

(a) 9

Step-by-step explanation:

[tex]\sf t^3 - r + 20 \div r[/tex]

substitute r = 4, t = 2

[tex]\sf (2)^3 - 4 + 20 \div 4[/tex]

simplify

[tex]\sf (2)^3 - 4 + 5[/tex]

cubic of 2 is 8

[tex]\sf 8 - 4 + 5[/tex]

simplify

[tex]\sf 9[/tex]

mathstudent55

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