Okay so I need more help on some questions to make sure I am doing everything correct. I answered all the questions but not sure if I got the right answers cause I don't have an answer key. So if some one could help me out that would be great. Thank you!

1. Which conditional statement can be used to write a true biconditional?:

a. If a number is divisible by 4, then it is even.

b. If a ratio compares two quantities measured in different units, the ratio is a rate.

c. If two angles are supplementary, then they are adjacent.

d. If an angle is right, then it is not acute.

2. The coordinates of X are (a – 5, -2a). The coordinates of Y are (a + 1, 2a). if the distance between X and Y is 10, find the value of a.: *

a. ±1

b. 2

c. -2

d. ±2

3. Line 1 contains the points (-2, 2) and (2, 5). Line 2 contains the points ( 0, 2) and (3, -2). Are these lines parallel, perpendicular or neither?: *

a. Parallel

b. Perpendicular

c. Neither

d. Not enough information to answer this question

4. In the accompanying diagram, MN is perpendicular to NP QP is perpendicular to PN, O is the midpoint of NP and MN = QP. Which reason would be least likely to be used to prove ∆MNO = ∆QPO?:

a. HL

b.AAS

c.SAS

d.ASA

5. The lateral area of two similar cylinders are 244 cm2 and 1525 cm2. The volume of the larger cylinder is 1625 cm3. Find the volume of the smaller cylinder.: *

a.260 cm3

b.650 cm3

c.1040 cm3

d.104 cm3

6. Which of the following cannot be a value of x so that (-1, 2) (-10, 5) and (-4, x) are vertices of a right triangle?: *

a.8

b.-1

c.-2

d.-7

7. Find the value of x.:

a.5

b.8

c.10

d.12

8. Quadrilateral DEFG is inscribed in a circle. ∠D = 72 and ∠E = 108. Quadrilateral DEFG could be a _______.

I. trapezoid

II. kite

III. rhombus: *

a.I only

b.III only

c.I or III

d.II or III

9. The side of an equilateral triangle is 26. Find the area of the triangle.:

a.239.0

b.292.7

c.585.4

d.146.4

10. Find the area of a regular heptagon with side length of 8 feet.: *

a. 66.3 ft2

b. 232.6 ft2

c. 112.0 ft2

d. 194.0 ft2

11. If you randomly choose a point on the grid, what is the probability to the nearest hundredth that it will be in the shade region?:

a..79

b..50

c..28

d..21

12. A cone has a volume of 18π in3. Which are possible dimensions of the cone?:

a.Diameter 1 in., height 18 in.

b.Diameter 6 in., height 6 in.

c.Diameter 3 in., height 6 in.

d.Diameter 6 in., height 3 in.

13. A tangent and a secant intersect a circle. Find the value of x to the nearest tenth.:

a.10.7

b.1.4

c.7.4

d.13.4

14. In the diagram, the larger of the two concentric circles has radius 5, and the smaller circle has radius 2. What is the area of the shaded region to the nearest hundredth?:

a.9.16

b.3.93

c.2.62

d.1.31

15. Find the value of x.:

a.7

b.11.8

c.16.8

d.Not enough information to solve for x.

16. Find the value of x.:

a.211°

b.184°

c.242°

d.There is not enough information to solve.

17. Line AB A(5,5) B(1,-2) is reflected over the x-axis to create a new line named CD. Write the equation of line CD in standard form.: *

a.7x + 4y = 15

b.7x – 4y = -1

c.y – 2 = -7/4(x – 1)

d.y = (7/4)x + ¼

18. The number of points equidistant from two parallel lines and also equidistant from two points on one of the lines is:: *

a.0

b.1

c.2

d.4

19. An airplane is flying north at 625 mph when a wind of 24 mph comes up out of the west. What is the new speed of the plane if no correction is made for the wind?: *

a.1536.6 mph

b.625.5 mph

c.1403.8 mph

d.571.0 mph

20. The diagonals of a quadrilateral ABCD intersect at E(5,-4). Two vertices are A(7,2) and B(1,-2). What must the coordinates of D be to ensure that ABCD is a parallelogram?:

a.(5,-8)

b.(3,-7)

c.(10,-5)

d.(9,-6)

21. If LN = 12, find MO to the nearest tenth.:

a.20.4

b.22.9

c.24.5

d.26.9

22. If (-5,9) is the image under composite transformation Tx,1 × T-3,y(-4,2), what are the coordinates of the image of (-1,7) under the same composite transformation?: *

a.(-6,16)

b.(-5,9)

c.(-2,14)

d.(-6,2)

23. Two triangles are similar. The sides of the smaller triangle have lengths of 6, 7 and 12. The perimeter of the larger triangle is 75. The length of the shortest side of the larger triangle is:: *

a.18

b.21

c.36

d.15

24. The altitude to the hypotenuse of a right triangle divides the hypotenuse into two segments. If the lengths of the segments are 10 and 24 find the length of the altitude.: *

a.7.2

b.4√15

c.8√6

d.There is not enough information to solve.

25. Given PR = SU, PQ = ST, which piece of additional information would not prove that ∆PQR = ∆STU?:

a.RQ = TU

b.<Q = <T

c.<R and <U are right angles

d.<P = <S