Use the quadratic formula to solve the equation:
x^2 + 6x - 3 = 0
0.9
100
Find the hyptonus, round to the nearest tenth:
a = 3 b = 7
7.6
100
Solve for x:
4x + 3 = 11
x = 2
100
Solve for a.
3a = 12
a = 4
200
What is the square root of 225?
15
200
Find the value of b^2 - 4ac for the equation:
x^2 - 3x - 4 = 0
-7, 7
200
Find the length of the leg.
a = 9 c = 15
b = 12
200
Check whether the given number is a solution of the equation:
9x - 5x - 19 = 21; 10
Solution
200
Find the mode of this set of numbers:
89, 72, 79, 60, 51, 54, 60, 89, 67, 60, 58, 56, 77, 55, 78
60
300
Solve the equation:
a^2 + 3 = 12
-3, 3
300
Write in standard form. Use the quadratic formula to solve the equation:
6x = -8x^2 + 2
+ or - 3
300
Find the missing length if a = 14 and c = 21. Round to the nearest hundredth.
15.65
300
Solve the equation:
5m - (4m - 1) = -12
m = -13
300
Use linear combination to solve the system of linear equations:
7x + y = 2
5x +2y = 4
x = 0, y = 2
400
Evaluate:
16^2 + 15^2 - 14^2
285
400
Use the quadratic formula to solve the equation:
-1/2x^2 + 6x + 13 = 0
undefined
400
Determine whether the given lengths are sides of a right triangle:
9.9, 2, 10.1
Yes.
400
Solve the equation:
22x + 2(3x + 5) = 66
x = 2
400
Simplify the expression:
(2wz^2)^5(wz)^2
32w^z^2
500
The sales S (in millions of dollars) of home computers in the United States from 1988 to 1995 can be modeled by S = 145.63t^2 + 3327.56, where t is the number of years since 1988. Use this model to estimate the year in which sales of home computers will be $36,000 million.
2003
500
Verticle Motion Models:
h = -16t^2 + s
h = -16t^2 +vt + s
A falcon dives toward a pigeon on the ground. When the falcon is at a height of 100ft the pigeon sees the falcon, which is diving at 220ft per second. Estimate the time the pigeon has to escape.
Approx. 1.94 seconds.
500
A field hockey field is a rectangle of 60 yards by 100 yards. What is the length from one corner of the field to the opposite corner? Round to the nearest tenth.
about 116.6 ft.
500
The sum of three numbers is 123. The second number is 9 less than two times the first number. The third number is 6 more than three times the first number. Find the three numbers.
21, 33, and 69
500
A population of 50 pheasants is released in a wildlife preserve. The population triples each year for 3 years. What is the population after 3 years?