Solve the system using matrices. 5x + y = 28 6x + 4y = 28
A. (-2, -6)
B. (6, -2)
C. No solution
D. (-2, 6)
Answer: B
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Your lean body weight 
, in pounds, is the amount you would weight if all the fat in your body were to disappear. The following formula gives an estimate for lean body weight in young adult males:
.
?
Here 
is total body weight in pounds and 
is abdominal circumference in inches.A: If a young adult male's abdominal circumference remains the same, but his total weight increases by 5 pounds, how is lean body weight affected?B: If a young adult male's total weight remains the same, but abdominal circumference increases by 3 inches, how is lean body weight affected?C: A young adult male has a lean body weight of 146.00 pounds. Over a period of time he gains 15 pounds and his abdominal circumference increases by 2 inches. What is his lean body weight now?
What will be an ideal response?
Find the exact value of the product.cos 45° cos 15°
A. 
B. 
C. 
D. 
Solve the problem.The perimeter of a rectangle is 
If the width were doubled and the length were increased by 
, the perimeter would be 
What are the length and width of the rectangle?
A. width 12 m, length 17 m B. width 17 m, length 17 m C. width 9 m, length 25 m D. width 25 m, length 9 m
Determine whether the given relationship defines a function. If so, identify the independent and dependent variable, and why the relationship is a function.The balance in a checking account b at the close of business on a given day x.
A. Yes; x, b; there is one balance b on any given day x at the close of the business day. B. No