Applying roots

In a computer catalog, a computer monitor is listed as being 27 inches. This distance is the diagonal distance across the screen. If the screen measures 15 inches in height, what is the actual width of the screen to the nearest inch? 

• 22 in
• 23 in
• 24 in
• 25 in

What is the circle's radius?

• 5 cm

• 10 cm

• 20 cm

Find the dimensions of the square in ft. Just give what s is equal to.

Solve by square roots

• ±81

• ±9

• ±3

• No real solution

 $x^2-49=0$  

Solve for x

• x = 7

• x = -7

• x = 49

• x = 7 and -7

3.) To find the surface area of a cube, you can use the formula A = 6s². Where s is the side length of the cube. Find the surface area of a cube with side length 4 inches.

The product of two irrational numbers is

• always rational

• always irrational

• sometimes rational and sometimes irrational

• sometimes real

7x² = 84

• 2√3, -2√3
• √12, -√12
• 2√3
• √12

Solve for x:

 $3x^2=48$  

• x = 7 or -7

• x = 4 or -4

• x = 2 or -2

• x = 10 or -10

A television set’s screen size is measured along the diagonal of the screen from one corner to another. If a television screen has a length of 28 inches and a diagonal that measures 32 inches, what is the height of the screen to the nearest tenth?