math
math 2 electric boogaloo
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Math^5
100
What is the square root of 5 rounded to the nearest thousandth
2.236
100
What is the reciprocal of -3?
-1/3
100
If 3x + 8x + 4x = 6x + 63, then what is 5x + 23?
58
100
If the positive square root of x is between 3 and 11, then what inequality represents all possible values of x?
9 < x < 121.
100
This year, a salesman sells a total of $60,000 worth of steak knives by going door-to-door. This represents a 20% increase from the year before. What was the value of his sales last year?
$50,000
200
x/3 = (2x + 3)/7
x=9
200
Carol is three times older than Andrew. Brad is two years older than Andrew. In six years, the sum of Andrew’s and Brad’s ages will be the same as Carol’s age. How old is Carol?
24
200
A cab ride costs $3.25 for the first half-mile and $0.70 for each mile after the first half-mile. How far can someone travel for $12?
13
200
13 – 2(2x + 1) = 1
5/2
200
|x + 5| = 3
-8 and -2
300
100^2-15^3
6625
300
A rocket is projected vertically upwards.
Its equation of motion is given by h = 500t − 5t2, where h is the height above the ground in meters and t is the time in seconds.
After how many seconds does it reach a height of 10,880 meters?
After 32 seconds and again after 68 seconds from t=0.
300
If 3x − 5y = 21 and 9x2 + 10y = 6, what are two possible values of x?
300
What are the y coordinates of the points where the parabola y2 = -4x + 9 and the straight line
3x + 2y = -2 intersect?
300
If x + y = 7 and x2 = 3(y − 1), what are two possible values of x?
x = -6 or 3
400
The above shows part of the graph of the function f(x) = x2 + 8x + 15.
Whats the vertex?
(-4,-1)
400
She needs twelve more shoes, but this approximate - they do not fit exactly:
12 more shoes
400
Use 1 cm^2 squared paper to draw a right triangle with one leg of length 7 cm and hypotenuse of length 25 cm.
Use a ruler to measure the length of the other leg.
What is the length of the other leg?
24 cm
400
The diagram shows a square-based pyramid with base lengths 6 in and height 8 in
What is the volume of the pyramid?
96 in^3
400
What is the size of the missing angle "B"?
38.2
500
PT is a tangent to a circle center O and angle TOP = 71°
What is the size of angle OPT?
19 degrees
500
What is the fifth interior angle of the pentagon?
114
500
A pentagonal pyramid has the following properties:
Base Area = 90.8 in.2
Perimeter = 36.3 in.
Height = 12 in.
Side Length =13 in.
All side faces are the same.
What is its total surface area?
326.75 in^2
500
The exterior angles of a nonagon are z°, 2z°, 3z°, 4z°, 5z°, 6z°, 7z°, 8z° and 9z°
What is the value of z?
8
500
What is the sum of the exterior angles of a square?
360