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Complete the Square, Circles and Prob Quiz

Total questions: 20

Worksheet time: 41mins

Name
Class
Date
1.
What do you do to the b value to correctly complete the square?
a)
square it
b)
divide it by 2 and square the result
c)
divide it by 2 and take the square root of the result
d)
divide it by 2 only
2.
Solve the equation by completing the square and then finding the roots. 
x2+ 6x - 4 = 36
a)
x = -7, 7
b)
x = 4, -10
c)
x = -4 +- √7
d)
x = 10, -4
3.
Complete the Square
x2 + 10x + ____
a)
x2 + 10x - 100
b)
x2 + 10x + 100
c)
x2 + 10x - 25
d)
x2 + 10x + 25
4.
Solve by completing the square:
k2 − 12k + 23 = 0
a)
{6 + √13, 6 - √13}
b)
{-6 + √13, -6 - √13}
c)
{6 + √59, 6 - √59}
d)
{-6 + √59, -6 - √59}
5.

Solve by completing the square.
x2−6x−59=0x^2-6x-59=0  

a)

x={±217+3}x=\left\{\pm2\sqrt{17}+3\right\}  

b)

x={±172+3}x=\left\{\pm17\sqrt{2}+3\right\}  

c)

x={±217−3}x=\left\{\pm2\sqrt{17}-3\right\}  

d)

x={±172−3}x=\left\{\pm17\sqrt{2}-3\right\}  

6.

Solve by completing the square.
x2−4x−5=0x^2-4x-5=0  

a)

x={−5, 1}x=\left\{-5,\ 1\right\}  

b)

x={−1, 5}x=\left\{-1,\ 5\right\}  

c)

x={−5, −1}x=\left\{-5,\ -1\right\}  

d)

x={1, 5}x=\left\{1,\ 5\right\}  

7.
Write the equation of a circle with center (7, 0) with radius 3. 
a)
(x - 7)2 + y2 = 9
b)
x2 + (y -7)2 = 9
c)
(x - 7)2 + y2 = 3
d)
x2 + (y -7)2 = 3
8.
In the equation (x+2)2+(y-3)2=4, the radius of the circle is...
a)
4
b)
2
c)
3
d)
16
9.
a)
A
b)
B
c)
C
d)
D
10.
What is the equation for this circle?
a)
(x+1)+(y+1)=9
b)
x²+y²=9
c)
x+y=9
11.

Does the point (4,5) lie on the circle whose center is (-2,-2) and radius 9?

a)

yes

b)

No

12.

The point (-5,6) is on a circle with center (-1,3) write the equation of the circle

a)

(x+1)2 + (y-3)2= 4000

b)

(x+5)2 + (y-0)2= 25

c)

(x+1)2 + (y-3)2= 25

d)

(x-1)2 + (y+3)2= 25

13.
Determine the equation of the circle in standard form: x2 + y2 + 6x - 12y + 20 = 0
a)
(x-3)2 + (y+6)2 = 25
b)
(x+3)2 + (y-6)2 = 25
c)
(x-3)2 + (y+6)2 = 45
d)
(x+3)2 + (y-6)2 = 5
14.
Determine the center and radius: x2 + y2 + 14x - 2y = -1
a)
center= (-7,2) radius= 3
b)
center= (-7,1) radius= 7
c)
center= (-4,1) radius= 5
15.

Which translation, when applied to the center of the circle x2+y2=4, creates the congruent circle x2+y2+8x-10y+37=0?

a)

Right 4 Up 5

b)

Right 4 Down 5

c)

Left 4 Down 5

d)

Left 4 Up 5

16.

You flip a coin and then roll a fair

six-sided die. The coin lands tails-up and

the die shows an odd number.

a)

Independent

b)

Dependent

17.

You select a card from a standard shuffled

deck of 52 cards. You return the card,

shuffle, and then select another card. Both

times the card is a diamond. (Note that 13

of the 52 cards are diamonds.)

a)

1 / 16 = 0.063

b)

1 / 9 = 0.111

c)

3 / 11 = 0.273

d)

1 / 4 = 0.25

18.

A basket contains eight apples and seven

peaches. You randomly select a piece of

fruit and then return it to the basket. Then

you randomly select another piece of fruit.

Both pieces of fruit are apples.

a)

1 / 12 = 0.083

b)

28 / 55 = 0.509

c)

7 / 26 = 0.269

d)

64 / 225 = 0.284

19.

You flip a coin twice. The first flip lands

tails-up and the second flip also lands

tails-up.

a)

1 / 9 = 0.111

b)

4 / 15 = 0.267

c)

1 / 4 = 0.25

d)

2 / 45 = 0.044

20.

A bag contains 5 striped cubes, 3 dotted cubes, 4 white cubes and 3 red cubes. What is the probability of drawing a red cube, replacing it, and then drawing a white cube?

a)

independent

b)

dependent