Exam 3

 $\ Simplify\ \frac{x^2+4x+4}{x+2}$  

• x+4

• x-2

• x+2

• x-1

• x+4

In the isosceles triangle, the vertex angle is 80° . Find the base angle of this triangle.

• 50

• 60

• 40

• 30

• 70

Find k, if the point B(4;14) lies on the graph of the function y=kx+2

• 1

• 2

• 3

• 4

• 5

Find the product of xy from the system

 $x-y=8$  

 $x+y=12$  

• 10

• 12

• 16

• 18

• 20

The hypotenuse of a right triangle is 15 cm. One of its legs is 12 cm. Find the measure of the other leg

• 7

• 11

• 9

• 8

• 12

Solve the equation: 4(x+4)=3x+19

• 14

• 15

• 4

• 3

How many segments can be drawn, if there are 3 points on the line?

• 1

• 2

• 3

• 4

In the circle with center O, ∠DCB = 20°, find ∠DCA.

• 130

• 110

• 100

• 120

Point C is the middle point of segment AB, and point D is the mid-point of segment AC. Find

the length of AB, if DC=9 cm.

• 24

• 34

• 18

• 26

• 36

One of the supplementary angles is 3 times the other one. Find the smallest angle.

• 45

• 55

• 65

• 35

• 25