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The recommended dosage of a certain type medicine is determined by the patient's weight
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# Question : The recommended dosage of a certain type medicine is determined by the patient's weight : 2151594

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

40) A rectangular desktop is 30 inches by 23 inches. Dick decides to enlarge the length and width by the same amount to make a new area of 1320 in2. What will be the dimensions of the new desktop?

A) 8 inches by 165 inches

B) 36 inches by 29 inches

C) 44 inches by 30 inches

D) 40 inches by 33 inches

41) A bedroom is 4 feet longer than wide. The area of the bedroom is 192 ft2. What is the length and width of the bedroom?

A) The length is 8 feet and the width is 24 feet.

B) The length is 4 feet and the width is 48 feet.

C) The length is 7 feet and the width is 28 feet.

D) The length is 16 feet and the width is 12 feet.

42) Solve the quadratic for x: x2 - qx + 8 = 0

A) x = (q ± √(-q2 - 32)/2)

B) x = (q ± √(q2 - 32)/2)

C) x = (-q ± √(q2 - 32)/2)

D) x = (q ± √(q2 + 32)/2)

43) Solve the following quadratic using any method: 25x2 = 81.

A) x = (5/9)

B) x = -1.8, 1.8

C) x = (5/9), -(5/9)

D) x = 1.8

44) Solve the following quadratic using any method: 36x2 - 144 = 0

A) x = ±2

B) x = 2

C) x = 4

D) x = ±4

45) Solve the quadratic for x: x2 - dx - 2p = 0

A) x = (d ± √(d2 - 8p)/4)

B) x = (d ± √(d2 + 8p)/2)

C) x = (-d ± √(d2 + 8p)/4)

D) x = (d ± √(d2 + 8p)/4)

46) A laptop case has an area of 150 in2. If the length is 5 in. more than the width, find the dimensions of the case.

A) width is 5 in.; length is 30 inches

B) width is 15 in.; length is 20 inches

C) width is 6 in.; length is 25 inches

D) width is 10 in.; length is 15 inches

47) Solve the following quadratic using any method, rounding to the nearest hundredth if necessary: 5x2 + 4x = 8.

A) x = -0.93, 1.73

B) x = -0.4, 1.2

C) x = 0.93, -1.73

D) x = -0.8, 0.4

48) Solve the following quadratic using any method, rounding to the nearest hundredth if necessary: x2 + 4x + 13 = 0.

A) x = -2 + 3i, 2 - 3i

B) x = 2 + 3i, 2 - 3i

C) x = -2 + 3i, -2 - 3i

D) x = -2 + 9i, -2 - 9i

SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.

49) A square rug has an area of 110 ft2. What is the length of one side of the rug?

50) A pipe has an interior cross-sectional area of 85 cm2. What is the interior diameter of the pipe? Round to the nearest tenth.

51) A pipe has an interior cross-sectional area of 78.5 cm2. What is the interior diameter of the pipe? Round to the nearest tenth.

52) The volume of a box (rectangular prism) is 504 in3. If the height of the box is 3 in., and the length of the box is 2 inches more than the width, what are the length and width of the box?

53) The volume of a box (rectangular prism) is 100 in3. If the height of the box is 2 in., and the length of the box is 5 inches more than the width, what are the length and width of the box?

54) A concrete worker is asked to pour a square patio that is 200 ft2 What is the length of each side? Round to tenths.

55) What is the current in amps (I) to the nearest hundredth if the resistance (R) of the circuit is 49.28 Ω and the watts (W) used are 308? Use the formula R = (W/I2).

56) What is the current in amps (I) to the nearest hundredth if the resistance (R) of the circuit is 52 Ω and the watts (W) used are 637? Use the formula R = (W/I2).

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

57) Solve the quadratic equation using the quadratic formula: 25x2 = 9

A) x = (9/5), - (9/5)

B) x = (3/5), - (3/5)

C) x = (3/5)i, - (3/5)i

D) x = (3/25), - (93/25)

58) Solve the quadratic equation using the quadratic formula: 9x2 + 16 = 24x

A) x = 12, 12

B) x = 1.33, 1.33

C) x = 0.75, 0.75

D) x = 1.33 + 1.28i, 1.33 - 1.28i

59) L - 2C + 1.57(d + d) + ((d - d)2/4C) will determine the length of a belt, L, that goes around two pulleys, where C is the distance between the centers of the pulleys, D is the diameter of one pulley, and d the diameter of the second pulley. Find the distance between the centers of the pulleys if the length of the belt is 82 in., the diameter of one pulley is 18 in., and the diameter of the other pulley is 8 in. Round to the nearest inch.

A) 41 inches

B) 20 inches

C) 19 inches

D) 40 inches

60) A bricklayer plans to build an arch in a garden with a span (s) of 1 m and a radius (r) of (1/2)m. How high (h) is the arch? Use the formula h2 - 2hr + (s2/4) = 0

A) 1.0 m

B) 0.5 m

C) 0.25 m

D) 2.4 m

61) The recommended dosage of a certain type medicine is determined by the patient's weight. The formula to determine the dosage is given by D = 0.1w2 + 5w, where D is the dosage in milligrams and w is the patient's weight in kilograms. A doctor ordered a dosage of 1,500 milligrams. This dosage is being administered to what weight patient?

A) 30 kg

B) 145 kg

C) 100 kg

D) 95 kg

62) L - 2C + 1.57(d + d) + ((d - d)2/4C) will determine the length, L, of a cross belt that goes around two pulleys, where C is the distance between the centers of the pulleys, D is the diameter of one pulley, and d the diameter of the second pulley. Find the diameter of one of the pulleys if the distance between the centers of the pulleys is 20 in., the diameter of one pulley is 10 in., and the length is 68.3 in. Round to the nearest tenth of an inch.

A) 6.0 inches

B) 8.2 inches

C) 8.0 inches

D) 6.9 inches

SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.

63) A rectangular flowerbed is surrounded by a walkway. The outside of the walkway measures 18 ft by 16 ft and the area of the flowerbed is 120 ft2. What is the width of the walkway? MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

x2 - 8x + 6 = 0

A) x = 4 + 1.41i, 4 - 1.41i

B) x = 7.16, 0.84

C) x = -7.16, -0.84

D) x = -4 + 1.41i, -4 - 1.41i

65) A rectangular patio slab is 360 ft2. If the length is 2.5 times the width, find the width and length of the slab.

A) width is 103 ft; length is 257 ft

B) width is 17.8 ft; length is 44.5 ft

C) width is 2.5 ft; length is 144 ft

D) width is 12 ft; length is 30 ft

## Solution 5 (1 Ratings )

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