Find the exact value of the trigonometric expression without the use of a calculator.sin 15° cos 105° + cos 15° sin 105°
A. 
B. - 
C. 
D. - 
Answer: A
Mathematics
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Find the mistake, then find the correct answer.Solve for x: 3x2 - 7x + 1 = 0line 1 x = 
line 2 x = 
line 3 x = 
line 4 x = Not a real number because 
is not a real number.
What will be an ideal response?
Mathematics
Perform the indicated operations. Write the answer using only positive exponents. Assume all variables represent positive real numbers.x1/8 ? x7/8
A. x
B. x7/64
C. 
D. x7/8
Mathematics
Use rational exponents to simplify the radical. If rational exponents appear after simplifying, write the answer in radical notation.
A. 
B. 
C. 
D. 10,000y4
Mathematics
Write the whole number in expanded form.7865
A. 7000 + 800 + 60 + 5 B. 7,865,000 C. 700 + 60 + 8 D. 5000 + 600 + 80 + 7
Mathematics