The scores on a 30-point multiple-choice exam are given in the following frequency table:
The range on the exam is
A. 10.
B. 7.
C. 9.
D. 8.
E. none of these
Answer: B
Mathematics
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Use a calculator to find the acute angle between the planes to the nearest thousandth of a radian.-7x - 8y - 10z = 2 and 5x + 4y - 8z = 2
A. 1.484 rad B. 0.087 rad C. 1.403 rad D. 0.983 rad
Mathematics
Evaluate the definite integral.
A. -21
B. - 
C. 11
D. - 
Mathematics
Use the fundamental identities to find the value of the trigonometric function.Find cos ? if tan ? = 4 and sin ? < 0.
A. - 17
B. - 
C. - 
D. 
Mathematics
Perform the indicated operations and simplify the result. Leave the answer in factored form.
A. 7
B. 21
C. 
D. 3x + 17
Mathematics