Victor is ordering pizzas for a party. he would like to have 1/4 of a pizza for each guest. he can only order whole pizzas, not part of a pizza. if he expects 27 guests, how many pizzas should he order? (need answer asap! )

7 pizzas.

Step-by-step explanation:

Victor is ordering pizzas for a party. He would like to have 1/4 of a pizza for each guest.

He expects 27 guests, this means each guest will get one fourth of the pizza.

So, Victor must order, rounding to whole 7 pizzas.

Therefore, Victor should order 7 whole pizzas. That will be divided into 27 guests with the last one fourth part remaining.

inverse operation of addition

x^2 + 81

we can factor this using difference of square binomials.

rewrite the equation:

x^2 - (-81)

factor:

(a^2 - b^2) = (√a^2 + √b^2)(√a^2 - √b^2)

(x^2 - (-81) = (x + √-81)(x - √-81)

we can remove the - from under the radical by multiplying it by i.

(x^2 - (-81) = (x + i√81)(x - i√81)

(x^2 - (-81) = (x + 9i)(x - 9i)

we can check our answer by using foil:

x^2 - 9ix + 9ix - 81i^2

x^2 - 81^2

i^2 = -1

x^2 + 81