Provide an appropriate response.The test scores of 40 driver license applicants are summarized in the frequency table below. Find the standard deviation. 
Round your answer to one decimal place.
A. 12.7
B. 13.4
C. 12.0
D. 12.1
E. 14.1
Answer: B
Mathematics
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Solve the equation.
x - 
= 
- 
A. 
B. 
C. 
D. 
Mathematics
Write an equation for the parabola.vertex (3, -4), focus (3, 1)
A. 20(y - 4) = (x + 3)2 B. y + 4 = 20(x + 3)2 C. x + 3 = 20(y + 4)2 D. 20(y + 4) = (x - 3)2
Mathematics
Supply missing reasons for the following proof.Given: 
bisects 
;
and 
Prove: 
S1. bisects ; R1. and S2. 
R2.S3. 
and 
are rt. 
R3.S4. 
R4.S5. 
R5.S6. 
R6.S7. R7.
What will be an ideal response?
Mathematics
Find the amplitude or period as requested.Find the period of y = 5 sin 
.
A. 8
B. 5
C. ?
D. 
Mathematics