Write the English sentence as an equation in two variables. Then graph the equation.The y-value is six less than twice the x-value.
A. y = x + 6
B. y = 2x - 6
C. y = x - 6
D. y = 2x + 6
Answer: B
Mathematics
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Find the length of the arc on a circle of radius r intercepted by a central angle ?. Round answer to two decimal places.r = 50 inches, ? = 40°
A. 36.2 inches B. 33.06 inches C. 34.91 inches D. 37.34 inches
Mathematics
Subtract.(-6x7 - x4y3 + x3y4 + 4y7) - (12x7 + x4y3 - 4x2y5 + 7xy6 + 3y7)
A. -18x7 + x3y4 - 4x2y5 + 7xy6 + 7y7 B. -18x7 + x3y4 + 4x2y5 - 7xy6 - y7 C. -18x7 - 2x4y3 + x3y4 + 4x2y5 - 7xy6 + y7 D. -18x7 + 2x4y3 + x3y4 - 4x2y5 + 7xy6 - y7
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.
- 
A. 7
B. 4
- 3
C. 3 - 4
D. 3
- 4
Mathematics
Perform the indicated operation. Assume that all variables are nonnegative.(
+ 
)(
- 
)
A. a - b
B. a - 2
+ b
C. a + b
D. a + 2
- b
Mathematics