Math Pre Algebra Help! Please!?

Tony

New member
Please I need help with these questions :)

3. Which of the following is a rational number?
A.?36 B. 0.93993 C. ?85 D. 3.474477

4. Which of the following is an irrational number?
F. 743,743 G.?169 H. 0.2323 J. 0.151155

5. Which of the following could be the lengths of the sides of a right
triangle?
A. 2, 6, ?38 B. 5, 12, 13 C. 36, 64, 100 D. 7, 8, 11

6. Which of the following could be the lengths of the sides of a 30°-60°-90°
right triangle?
F. 3, 3, 3?2 G. 9,18?3, 18 H. 6, 6?3, 12 J. 5, 5?2, 5?3

7. Find sin 28° to four decimal places.
A. 0.4695 B. 0.8829 C. 0.5317 D. 0.6157

8. A right triangle has legs of lengths 7 m and 9 m.Which of the following
is the best estimate of the length of the hypotenuse?
F. 10 m G. 11 m H. 12 m J. 13 m

16. Find the distance between the points A(-7, 6) and B(-1, 1) to the
nearest tenth of a unit.

17. Find the midpoint of the segment with endpoints A(-7, 6) and B(-1, 1).

18. A building casts a 52-foot shadow at the same time Tonya casts a 4-foot
shadow.Tonya and her shadow form a triangle that is similar to the
triangle formed by the building and its shadow. If Tonya is 5 feet tall,
what is the height h of the building?

19. An airplane is flying 0.75 miles above the ground. If the pilot must begin
a 4° descent to an airport runway, how far is the airplane from the
beginning of the runway (in ground distance) to the nearest tenth of a
mile?

20. Explain why the tangent of 458 5 1.

Thank You :)
 
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