Solve the problem. Express your answer in simplest form.Peter must practice the piano 10
hours per week. He has already practiced 4
hours. How many more hours does he need to practice?
A. 6
hr
B. 5
hr
C. 4
hr
D. 5 hr
Answer: B
Mathematics
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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
Solve for x, if 
. Write your answers in exact values only.
?
What will be an ideal response?
Mathematics
Multiply or divide by moving the decimal point.846,686 ÷ 100,000
A. 846.686 B. 0.846686 C. 84.6686 D. 8.46686
Mathematics
If the sides of a triangle are a, b, and c and they satisfy a2 + b2 = c2, the triangle is a right triangle. Determine whether the triangle with the given sides is a right triangle.a = 1, b = 
, c = 
A. Yes B. No
Mathematics