Mathematics, 15.06.2020 16:57, 20171303
I. Choose the correct answer from the given alternatives
1. Which of the following is not an identity?
A. Sin2 + Cos2 = 1
B. Sin = tan. cos
C. 1 + cot2= cos2
D. 1 – sec2 = tan2
2. The exact value of cot (-8550) is ?
A. 2 B. 1 C. -1 D. 0
3. Which one of the following is necessarily true?
A. Any rectangle is a square
B. Any rhombus is a square
C. Any square is a rectangle
D. Any a parallelogram is a rhombus
4. If the two diagonals of the quadrilateral bisect each other, then
the quadrilateral is necessarily
A. Square B. rhombus C. parallelogram D. Rectangle
5. The angle of deperession of aPt A, as measured form the top of
abuilding 30m tall is 450, how far is A from the basc of the
building?
A. 97m B. 30m C. 45m D. 32m
6. Which of the following is negative?
A. Cos(-890)
B. Tan(-1200)
C. Sin (1200)
D. Sin (-890)
7. If 300 and 450 are respectively the angle of elevation of the foot
and the top of a television antenna on the top of 100meter tall
building then the total height of the antenna from the ground
is ?
A. 100√3m B. 120m C. 150m D. 120√3
8. If A(-2, 3) , B(-2, -7) and c(-4, 5) are the three vertices of a
triangle. What is the Pt at which the medians intersect?
A. (3, -3) B. (-3, 3) C. (1, -2) D. (0, -3)
9. What is the periemeter of a rhombus whose diagonal are 16
and 30 units?
B. 68 unit B. 92 unit C. 46 unit D. 42 unit
10. Which of the following can never be the mesure of each
exterior angle of regular polygon?
A. 150 B. 200 C. 250 D. 300
Answers: 2
Mathematics, 21.06.2019 18:50, brooke0713
Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling
Answers: 1
Mathematics, 22.06.2019 09:00, kleathers97
Each month, a phone company charges $20 for 500 minutes of talk time plus $0.45 for each additional minute. unlimited texting costs $30 more. choose an expression to show the cost of a talk-and-texting plan for one month, given x minutes over 500.
Answers: 2
I. Choose the correct answer from the given alternatives
1. Which of the following is not an identi...
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