Mathematics: Find the value of the expression below for r = 4 and t = 2 t^3 - r + 20 divided by r

Find the value of the expression below for r = 4

nikkierubio2007

04.01.2022

The value of the expression $t^3-r+\frac{20}{r}$ is, 9

Step-by-step explanation:

Given: The expression $t^3-r+\frac{20}{r}$

Substitute the value of r=4 and t=2 in above expression to find its value;

$t^3-r+\frac{20}{r} = (2)^3-4+\frac{20}{4}$

Cube: the cube of a number t is its third power, the result of the number multiplied by itself twice. i.e, $t^3 = t \times t \times t$

Now, solve further we have;

$(2)^3-4+\frac{20}{4} = 8 -4+\frac{20}{4}$

Further, divide the number 20 by 4 we get the result 5 ;

⇒ 8-4+5 = 4+5 =9

Therefore, the value of the expression $t^3-r+\frac{20}{r}$ is, 9.

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val319

15.10.2021

14 = 7 x 2

21 = 7 x 3

The answer is 7

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