Translate the sentence to an equation using the variable x. Then solve the equation.When 50% of a number is subtracted from 70, the result is 2 less than the number.
A. 70 - 50 = x - 2; 22
B. 70 + 0.5x = x - 2; 144
C. 0.5x - 70 = x - 2; -136
D. 70 - 0.5x = x - 2; 48
Answer: D
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Solve the problem.A pair of six-sided dice are rolled. The observation is the number that comes up on each die. The event described by E: "the sum of the two numbers rolled is 2, 4, or 6" is
A. {(1, 1), (1, 3), (1, 5), (2, 2), (2, 4), (3, 1), (3, 3), (4, 2), (5, 1), (6, 2)}. B. {(1, 1), (1, 3), (1, 5), (2, 2), (2, 4), (3, 1), (3, 3), (4, 2), (5, 1)}. C. {(1, 1), (1, 3), (1, 5), (2, 2), (2, 4), (3, 1), (3, 3), (4, 2)}. D. {(1, 3), (1, 5), (2, 2), (2, 4), (3, 1), (3, 3), (4, 2), (5, 1)}. E. none of these
Use the properties of real numbers to simplify the expression.-7x - (-3x)
A. -4x B. -4 C. -7x D. 4x
Decompose v into two vectors v1 and v2, where v1 is parallel to w and v2 is orthogonal to w.v = 3i + 2j,
w = 3i + j
A. v1 = + 
i + 
j, v2 = - 
i + 
j
B. v1 = + 
i + 
j, v2 = - 
i + 
j
C. v1 = + 
i + 
j, v2 = 
i + 
j
D. v1 = + 
i + 
j, v2 = 
i + 
j
Write the decimal in numbers.In her qualifying time trial, a race car driver averages a speed of one hundred 
and thirteen thousandths mph.
A. 77.130 mph B. 177.001 mph C. 177.013 mph D. 177.13 mph