Algebra Answers

Consider the inequality −2 ≤ d < 4

Select the two lists of integer values of d in which all the values satisfy the inequality.

Which ones are true of the five below?

−2, −1, 0, 1

1, 2, 3

1, 2, 3, 4 

−3, −2, −1, 0, 1 

−3, −2, −1, 0, 1, 2, 3

7x2−4x+8=0 find the discriminate

A restaurant offers a new promotion of 20% off the original price of cheese pizzas, which is $12. Before the promotion 250 pizzas were sold each day. After the promotion, the sale of pizza increases an average of 18% more per day.

How much more or less does the restaurant make each day in pizza sales after the promotion?

b = 3 minus ( a over 2 )

rearranged to make (a) the subject of the equation.

2x^2 - 2x + 3x^2 - 5 - x

coefficient of x^2 ?
coefficient of x ?
constant term ?

3/4 of 8 =

Use a calculator to find the given value. Round to four decimal places.

sin 21

following the positive indices:
a. x/y^-2
b. 3x^-1(2)^2/5y^-3

Simplify each of the following expressions as far as possible; multiply
out any brackets, expand any algebraic fractions, and collect like
terms together. Show your working.

8t − 10 − 10t + 15
3(7 − 5p)
1 + x(6 − 4x) − 6x
12a − 4(5b − 2a)
4x(7 − 3x − 2x^2) + 5(3x^2 − 12x)
------------------------------------------------
q^2 − 4q + 6
___________
q

(x-20 over x squared-4x)+(x over x-4)