math algebra 3
PLEASE CHECK ATTACHMENT FOR FULL PAPER
____ 1.
____ 2.
____ 3.
____ 4.
____ 5.
A set of data with a mean of 45 and a standard deviation of 8.3 is normally distributed. Find the value that is +1 standard deviations from the mean.
- 53.3
- 36.7
- 59.6
- 28.4
Evaluate the sum of the series .
- 51
- âˆ’15
- âˆ’11
- 15
Find the center and radius of this equation: (x + 4)2 + (y â€“ 3)2 = 25.
- C(4,â€“3);r=5
- C(4,â€“3);r=25
- C(âˆ’4,3);r=25
- C(â€“4,3);r=5
What type of conic section is this equation: 3x2 â€“ 18y2 = 36?
- circle
- ellipse
- hyperbola
- parabola
Write an equation of a parabola with vertex (0, 0) and focus (0, 5).
- x= y2
- x= y2
- y= x2
- y= x2
____ 6.
____ 7.
____ 8.
A ball on a pendulum moves 50 cm on its first swing. On each succeeding swing back or forth it moves 60% of the distance of the previous swing. Write the first four terms of the sequence of swing lengths.
- 50, 30, 18, 10.8
- 30, 18, 10.8, 6.48
- 50, 20, 8, 3.2
- 50, 30, 10, âˆ’10
Identify the focus and directrix of this equation: y2 â€“ 20x = 0.
- F(5,0);x=âˆ’5
- F(âˆ’5,0);x=5
- F(0,5);y=âˆ’5
- F(0,âˆ’5);y=5
Write an equation of a parabola with vertex (0, 0) and focus (0, âˆ’5). a. y=âˆ’ x2
____ 9.
____ 10.
____ 11.
- x=âˆ’ y2
- y= x2
- x= y2
Find the foci of this ellipse: +
- (0, 10) and (0, âˆ’10)
- (0, 8) and (0, âˆ’8)
- (0, 8) and (0, 10)
- (0, 6) and (0, âˆ’6)
= 1.