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230990 Questions
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210
2
Interest rates
Dr. Zaius invests $10,000 in a CD with an annual interest rate of 4% that compounds semi-annually (twice a year). After six months, he rolls over the CD into another CD with an annual interest rate of 6% that also compounds semi-annually. After
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Guest
Dec 15, 2021
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280
2
System
For what ordered pair (a,b) are there infinite solutions (x,y) to the system
4x + ay = -8
2x - 3y = b
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Guest
Dec 15, 2021
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267
1
Algebra problem
There are values A and B such that (Bx-11) / (x^2-7x+10) = A/(x-2) - 3/(x-5).
Find A+B
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Guest
Dec 15, 2021
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262
1
Floor function
Solve floor(r) + r = 12.2 - r.
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Guest
Dec 15, 2021
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301
1
Geometry
The three angles of a triangle have measures A = x + 2y degrees, B = 6x - 5y degrees, and C = 8x + 3y degrees. Find x in degrees.
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Guest
Dec 15, 2021
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259
1
Quadratic
The roots of the equation 2x^2 - 5x - 4 = 2x + 3 can be written in the form x = (m±sqrt n)/p, where m, n, and p are positive integers with a greatest common divisor of 1. What is the value of n?
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Guest
Dec 15, 2021
Dec 14, 2021
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326
2
Fraction
Find the fraction that equals 0.7266666666... + 0.023333333...
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Guest
Dec 14, 2021
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280
1
Algebra
Let the reciprocals of the roots of x^2 - 2x + 5 = 0 be a and b. Evaluate a*b.
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Guest
Dec 14, 2021
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293
1
Algebra problem
For which values of k does the equation (x - 1)/(x - 2) = (x - k)/(x + 6) have no solution for k? Enter all the possible values of separated by commas.
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Guest
Dec 14, 2021
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310
3
Help! Thank you so much!
Suppose in the diagram below. What is ?
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Guest
Dec 14, 2021
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264
1
help algebra
Find all real values of x such that
(2x^2 - 3x)/(x^2 - x) + 5x - 11 = (3x^2 + 4)/(x^2 - 1)
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Guest
Dec 14, 2021
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361
2
+1679
Decimals
What is the product of the numerator and the denominator when $0.\overline{09}$ is expressed as a fraction in lowest terms?
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wiseowl
Dec 14, 2021
0
295
2
+213
Find the Limit
lim x/tanx
x->0
Find the limit.
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OwenT154
Dec 14, 2021
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240
2
geometric sequence
Consider the geometric sequence 125/9, 25, 45, .... What is the eighth term of the sequence? Express your answer as a common fraction.
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Guest
Dec 14, 2021
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267
2
Please help!!
How many real numbers are not in the domain of the function f(x) = (1/x-64) + (1/x^2 - 64) + (1/x^3 - 64)
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Guest
Dec 14, 2021
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317
3
Geometry
A, B, C, D, and E are points on a circle of radius 2 in counterclockwise order. We know AB = BC = CD = DE = 2. Find [ABCDE].
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Guest
Dec 14, 2021
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281
2
Graphing functions
The graphs of two linear functions, f(x) and g(x), are shown here on one set of axes:
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Guest
Dec 14, 2021
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273
1
I know this is a math site, but can someone help me in bio. I can't find anyone who explains it to me. Help please
I know this is a math site, but can someone help me in bio. I can't find anyone who explains it to me. Help please
What's next for the question mark?
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Guest
Dec 14, 2021
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288
1
Logarithms
Suppose a does not equal 0. Compute log_{4^a} 8^b in terms of a and b.
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Guest
Dec 14, 2021
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175
0
Functions
Suppose that g(x)=f^{-1}(x). If g(-15)=0, g(0)=3, g(4)=9, g(1) = 4, and g(9)=20, what is f(f(9))?
Guest
Dec 14, 2021
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547
2
Elaine rolls 2 fair dice. What is the probability of both dice showing a prime number?
Elaine rolls 2 fair dice.
What is the probability of both dice showing a prime number?
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Guest
Dec 14, 2021
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306
1
Counting
Liz has 11 marbles of different colors. In how many ways can she choose 3 of the marbles, if she refuses to choose the green one and the purple one and the blue one?
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Guest
Dec 14, 2021
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276
1
Absolute value
How many integers have an absolute value less than 10pi + 10*sqrt(2)?
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Guest
Dec 14, 2021
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297
2
Absolute value
What is the least possible value of the sum | x - 1 | + | x - 1.5 | + | x - 2 | + | x - 2.5 | + | x - 3 |?
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Guest
Dec 14, 2021
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