How long will it take $20,000 to grow to $35,000 if the interest rate is 7% compounded continuously?
about 8 years
100
what is sin135?
What is sqrt2/2
100
what type of sequence is this?
10,7,4,1,...
What is arithmetic?
100
What is the identity matrix for 2x2 matrix?
What is
1 0
0 1
100
How many ways can a director select 4 actors from a group of 10 actors to attend a workshop on performing in rock musicals?
What is 210?
200
Find the effective interest rate for 5.5% compounded continuously. Round to nearest 100th as a percent.
What is 5.65%
200
if cotx=5, then tan(90-x)=?
What is 5?
200
Find the sum of the first 50 terms of 2,5.5,9,12.5,...
What is 4387.5?
200
Find the inverse of
2 6
3 -1
What is
1/20 3/10
3/20 -1/10
200
Find the probability of choosing a card (from standard deck) that is a queen or black.
What is 29/52
300
The half-life of aspirin in your bloodstream is 12 hours. How long will it take for the aspirin to decay to 70% of the original dosage? round to nearest 10th.
What is 6.3 hours?
300
Find the reference angle for 11pi/8
What is 3pi/8
300
find the nth term formula of the geo sequence if the 3rd term is 3 and the 9th term is 1/243.
What is an=3^(4-n) or an=27(1/3)^n-1
300
given the objective function z=x+4y find the max value under the given constraints:
x>0; x<5; y>0; y<3
x+y>3
What is 17
300
choosing a card from a standard deck - what is the probability of not getting an ace or 10?
What is 2/13
400
The half-life of krypton-91 is 10 seconds. If 16 grams of krypton-91 are initially present, how many grams are present after 35 seconds? round to nearest 10th
What is 1.4 g?
400
What is the domain of the tangent function?
What is all reals except odd multiples of pi/2
400
Find the coefficient of the 6th term in (3x+y)^11
What is 336,798?
400
solve the system:
x+2y-z=5
2x-y+3z=0
2y+z=1
What is (2,1,-1)
400
Find the z score if the mean of the sample is 50, standard deviation is 3.5 and the given value for x is 62.
What is 3.43
500
Five years ago the population of an endangered bird species was at 1400 and today only 1000 of the birds are alive. Once the population reaches 100, the situation will be irreversible. When will this happen?
What is 34.2 yrs?
500
What is the range of the function?
y=3cos(2x)-1
What is [-4,2]?
500
expand (.5x-2y)^5
What is 1/32x^5-5/8x^4y+5x^3y^2-20x^2y^3+40xy^4-32y^5
500
Find the determinant of
2 -1 1
3 -3 4
4 -2 3
What is -3
500
In a normal distribution, find the probability that a given value would be between -1 st. dev. and 2 st. dev.