Page 185 - Algebra 1

*21. Astronomy Th_e gravitational force between two objects can be approximated 12
(6) by using F = m m , where F is the gravitational force in newtons, m is the mass d21
in kilograms of the first object, m2 is the mass in kilograms of the second object, and d is the distance between them expressed in meters. If the mass of a satellite is 500 kilograms, the mass of a small asteroid is 1500 kilograms, and the distance between them is 1000 meters, what is the gravitational force between the satellite and the asteroid?
22. Verify Use two different methods to evaluate 8(10 - 4). Verify that each method
(15)
gives the same result. 23. Evaluate √ 49 + 42.
(13)
24. True or False: (b + c) + d = b + (c + d). Justify your answer. (12)
25. Evaluate the expression 3n2p5 + 4(n - 8)2 for the given values n = -3 and p = 1. (9)
26. Write Give a counterexample for the following statement: The set of irrational
(1)
3 4 27. (18)
numbers is closed under subtraction. Measurement Find the perimeter of the polygon.
7x + 1
3x + 3
1
4x + 2 x
2x + 6 28. Probability A coin is tossed 3 times.
(1)
b. Could the probability ever be a whole number? Explain.
29. Write When a student converts from miles to feet, will the student multiply or
(8)
divide? Explain.
*30. Write Describe a situation that could be represented by a continuous graph.
(Inv 2)
a. What set of numbers could be used to express the different probabilities of how the coin is tossed?
170 Saxon Algebra 1