Please help me out with these questions about geometry

madracer10 · #1 $Old$ November 2nd, 2009, 09:51 PM

2. Two vertices of equilateral Δ DEF are D(2,6) and E(8,3). The triangle undergoes a dilation with scale factor 4. What is the perimeter of the image D'E'F'?: *
a.26.8
b.76.4
c.20.1
d.80.5

3. Write in standard form the equation of the line that passes through the points (-3,-2) and (9,2).: *
a.y = (1/3) x – 1
b.3x + y = -25
c.x - 3y = 3
d.y = 3x - 25

4. Given 4x – 2y = 8 and 2x – 4y = 0, are these lines parallel, perpendicular or neither?: *
a.Parallel
b.Perpendicular
c.Neither
d.There is not enough information to answer this question
5. Find the value of x in triangle ABC.: *

https://prv.tutor.com/apply/applicat...E-F0F6C8B85084

a. 3√10
b. 4√15
c. 1√6
d.There is not enough information to solve.

6. Find the perimeter of ΔDEF with vertices D (2, -2), E (-5, 1), and F (0, 6).: *
a.11.5 units
b.14.2 units
c.22.9 units
d.57.4 units

7. The vertices of ΔABC are A(1,8) B(9,2) C(-3,-4). Which of the following points is not a vertex of ΔDEF whose vertices lie on ΔABC and whose perimeter is ½ of ΔABC’s?: *
a.(4,3)
b.(-1,2)
c.(5,5)
d.(3,-1)

8. A side of an equilateral triangle measures 16cm. Find the area of the triangle.: *
a. 128√3
b. 64
c. 64√3
d.There is not enough information to solve.

9. Find the height of a cylinder that has a lateral area of 606.2 m2 and a radius of 7.2 m. Round to the nearest tenth.: *
a.6.2 m
b.13.4 m
c.26.8 m
d.560.9 m

10. Find the value of angle 1 in the following diagram.: *

https://prv.tutor.com/apply/applicat...B-E07D3E173E07

a. 7.5°
b. 60°
c. 30°
d. 35°

11. What is the surface area of a prism whose bases are triangles with sides measuring 5 meters, 12 meters, and 13 meters, if it is 20 meters tall?: *
a. 600 m2
b. 630 m2
c. 660 m2
d. 690 m2

12. What is the inverse of the following statement, ''If a figure is closed, then it is a polygon''?: *
a.''If a figure is not a polygon, then it is not closed''
b.''If a figure is closed, then it is not a polygon''
c.''If a figure is not closed, then it is a polygon''
d.''If a figure is not closed, then it is not a polygon''

13. Find the volume of the cone to the nearest tenth.: *

https://prv.tutor.com/apply/applicat...E-F6F21AF72BAE

a. 12.6 ft3
b. 20.9 ft3
c. 50.3 ft3
d. 83.8 ft3

14. This game board is a circle inscribed in a 10 inch square. The circle is divided into 8 equal sectors. Find the probability of hitting the shaded area.: *

https://prv.tutor.com/apply/applicat...D-7E04EFB09E8A

a.55%
b.61%
c.68%
d.73%

15. Find the coordinates of A (3, -2) after it has been reflected over the graph of x = 1 and then x = 0: *

https://prv.tutor.com/apply/applicat...E-F0F6C8B85084

a.(-3, 4)
b.(3, -4)
c.(1, -2)
d.(-1, -2)

16. It cost the Browns $216 to have a 9ft-by-12ft floor refinished. At that rate how much would it cost to have a 12ft-by-16ft floor refinished?: *
a.$384
b.$240
c.$360
d.$268

17. A line segment AB is 1 cm long. What is the locus of points 2 cm from both A and B?: *
a.1 point
b.2 points
c.0 points
d.4 points

18. AS is perpendicular to RT, A is the midpoint of RT. Which of the following ways will be used to prove ΔRAS = ΔTAS?: *

https://prv.tutor.com/apply/applicat...3-67205B11713B

a.HL
b.ASA
c.SSA
d.SAS

19. Find the area of a regular octagon with a 12 inch radius.: *
a. 982 in2
b. 407 in2
c. 814 in2
d. 540 in2

20. A boat has a speed in still water of 25 mi/h. It is crossing a river that flows directly south at 7mi/h. If the boat heads directly west what is the boat’s resulting speed and direction?: *
a. 26 mi/h, 16° south of west
b. 26 mi/h, 16° west of south
c. 25 mi/h, 74° west of south
d. 28 mi/h, 74° south of west

21. If ∠1=4x-12, ∠2=6y-10, ∠3=3x-4 and ∠4=5y+25, find the measure of ∠3.: *

https://prv.tutor.com/apply/applicat...2-AFB25084CBAF

a. 15°
b. 28°
c. 100°
d. 80°

22. The lateral areas of two similar prisms are 196 in2 and 324 in2. The volume of the smaller prism is 686 in3 . Find the volume of the larger prism.: *
a. 882 in3
b. 1458 in3
c. 1134 in3
d. There is not enough information to solve.

23. Find the area of kite LMNO if LN=16.: *

https://prv.tutor.com/apply/applicat...B-2CDF2267A355

a.136
b.168
c.336
d.There is not enough information to solve.

24. What additional information is sufficient to prove that parallelogram PQRS is also a square?

I. PQ=QR=RS=SP

II. ∠P, ∠Q, ∠R,∠S are right angles

III. PR is perpendicular to QS: *
a.I only
b.II only
c.I and II only
d.I and III only
25. In parallelogram ABCD, DE and CF are altitudes. Find CF to the nearest tenth.: *

https://prv.tutor.com/apply/applicat...8-F2B75C2C5E57

a.8.1 in
b.6.7 in
c.13.4 in
d.9.2 in

ukorov · #2 $Old$ November 2nd, 2009, 11:08 PM

many questions....looks like someone is asking people to finish his homework for him

....

madracer10 · #3 $Old$ November 3rd, 2009, 11:56 AM

Actually no this isn't my homework. I took about an hour to type out those questions. There are about 200 questions that I have to do to study for a test and these are the ones that I am having trouble with. So if anyone could PLEASE help me it would be great. Thanks!

ukorov · #4 $Old$ November 3rd, 2009, 09:24 PM

2d 3a 4c 5b 6c 7a 8c 9b

10: what does that 40 degrees stand for???

11c 12b 13a 14b 15c 16a

17: diagram?

18d 19b 20a 21d 22b 23b 24c 25d

mr fantastic · #5 $Old$ November 4th, 2009, 12:48 AM

Too many questions in one thread. And the purpose of MHF is not to provide solutions to such a large volume of questions. You need to ask your teacher for solutions.