Solve systems of 2 linear equations by using the linear combination method

4). - 15x-2y=-31 4x+6y=11

5). 7x+2y=-3 - 14x-4y=6

6). - 5x+2y=-10

Anne bought a necklace for each of her three sisters he paid $7 for each necklace. Suppose she had $9 left. write and solve an equation to find how much money Anne had initially to spend on each sister.

Ed the indicated areas. For each problem, be a standard normal curve and shade the area th mine the area under the standard normal curve that lies In Problems 5-12, find sure to draw a stand be found. 5. Determine the ar to the left of (a) z = - 2.

Alicia puts $400.00 in a bank account. Each year the account earns 5% simple interest. How much money will be in her bank account in six months? A) 10.00 B) 410.00 C) 420.00 D) 20.00

You are the manager of a clothing store. You must decide how many of your employees to put on the sales floor, and how many to put on the register.

Write down factors of 20

What is the surface area of a conical grain storage tank that has a height of 43 meters and a diameter of 14 round to the nearest square meters

There are 8 rulers in the drawer Sara took 3 rulers from the drawer how many rulers are now in the drawer

What is the value of "c" in the quadratic equation 3x 2 + 5x + 7 = 0?

What is the estimated sum? round each number to the nearest hundred before adding. 521,370 26,839

You are planning a 420 mile trip. You will drive at a rate of 60 mph. After 2 hours of driving you stop for 15 minutes. After two more hours, you will stop for 30 minutes to eat. Two hours later, you will stop for 15 minutes again.