Which answer shows correct substitution into the expression 362 - (b + 4) when b = 5? O (3.5)2 – 5+4
O (3.5)2 – (5+4)
O 3(5)2 – (5+4)
O 3 . 52 - 5+4

3b²-(b + 4) = 3(5)²-(5 + 4)

Step-by-step explanation:

The given expression is :

3b²-(b + 4)

We need to given an expression when the value of b is 5.

Put b = 5 in the above expression.

3b²-(b + 4) = 3(5)²-(5 + 4)

We can also solve it as follows :

= 3(25)-(9)

= 75-9

= 66

Hence, option (c) will be the answer.

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2