Find, correct to the nearest degree, the angle between the planes.
x+y-z=1, 8x-11y+16z=5
121°
Mathematics
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Simplify.
A. -(x + 7) B. -(x - 7) C. 7x(x + 7) D. x + 7
Mathematics
Solve the rational inequality and graph the solution set on a real number line. Express the solution set in interval notation.
? 0
A. 
or [5, ?)
B. [5, ?)
C. 
or [5, ?)
D. 
Mathematics
If the area of a rectangular wall is 30 yd² and the insulation costs $12.50 per square yard, how much will the project cost?
What will be an ideal response?
Mathematics
Provide an appropriate response.Round 96,465 to the nearest thousand.
A. 106,000 B. 96,100 C. 97,000 D. 96,000
Mathematics