Solve.a + 2 = 19
A. -21
B. -17
C. 21
D. 17
Answer: D
Mathematics
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x3 + 2x + x2 + 2
A. (x2 + 1)(2x + 1) B. (2x + 1)(x + 1) C. (x2 + 1)(x + 2) D. (x2 + 2)(x + 1)
Mathematics
Use mathematical symbols to translate the phrase. Use x to represent the unknown number. If there are two unknown numbers, use x and y to represent the numbers.3 more than the difference of two numbers.
A. 3(x - y)
B. x + y - 3
C. x - y + 3
D. 
+ 3
Mathematics
Use the data to construct a frequency distribution.A teacher asked each of her students how many novels they had read in the previous six months. The results are shown below.
Construct a frequency distribution, letting each class have a width of one.
A. 
B. 
C. 
D. 
Mathematics
Write the number in trigonometric form. Let 0 ? ? < 2?.-4 + 4
i
A. 4
B. 8
C. 8
D. 4
Mathematics