What number must you add to complete the square? x^2+6x=23

In order to use the t distribution, we must know the population standard deviation. True or False?

Roberto left his parent's house at 11 A. M. traveling at an average rate of 30 mph. His parents left their house at 12 P. M. traveling at an average rate of 45 mph going the same way as Roberto so that they could catch up to him.

An iron ball is bobbing up and down on the end of a spring. The maximum height of the ball is 50 centimeters and its minimum height is 14 centimeters. It takes the ball 2 seconds to go from its maximum height to its minimum height.

How is 2.47 and 24,700 different

a store sells packages of 3 pens for $1.50, 8 pens for $4.00 and 12 pens for $6.00. Let c represent the total cost and p represent the number of pens. Write an equation to represent this situation

A rectangle is dilated. The area of the original rectangle is 48 square units. The area of the dilation is 12 square units. What scale factor was used in the dilation? F. 0.5 G. 4 H. 2 J. 0.25

a school is selling T-shirts to students. It costs $35 to create the design and $10 to print each shirt. Write an equation in y=mx + b that models this.

A consumer charges a $46.92 purchase on a credit card. The card has a daily interest rate of 0.039%. If the consumer pays off the balance at the end of 30 days, how much in interest will be paid for the purchase? a. $0.06 b. $0.18 c. $0.55 d. $5.

The sum of 3p and 6, cubed

Solve the equation (5*+7) 1/5 = (8-6*) 1/5