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All Questions
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236531 Questions
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312
6
Melody or anyone good at combination, please help!
https://web2.0calc.com/questions/combination-question_3, can you guys check this?
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Guest
May 12, 2022
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290
5
Domain
What is the domain of the function f(x) = (x + 6)/sqrt(x^2 - 4)?
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Guest
May 12, 2022
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281
1
System
If 1/x + 1/y = 1/3 and 1/x - 1/y = 1/7, what is the value of x + y? Express your answer as a common fraction.
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Guest
May 12, 2022
0
321
0
The center of an ellipse is (1,6). One focus of the ellipse is (−2,6). One vertex of the ellipse is (10,6). What is the equation of the ell
The center of an ellipse is (1,6). One focus of the ellipse is (−2,6). One vertex of the ellipse is (10,6).
What is the equation of the ellipse in standard form?
Guest
May 12, 2022
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338
3
Comp math
m^3 + 24m^2 - 2022 = 3^n
m and n are integers
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Guest
May 12, 2022
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233
1
help counting
If all multiples of 3 and all multiples of 4 are removed from the list of whole numbers 1 through 1200, then how many whole numbers are left?
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Guest
May 12, 2022
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281
1
Number Theory
Find the smallest composite number that has no prime factors less than .
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Guest
May 12, 2022
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181
0
Algebra problem
The solutions of x(x - 3) = 2 may be expressed in the form (a + sqrt(b))/c and (a - sqrt(b))/c, where a, b, and c are prime numbers. Find a + b + c.
Guest
May 12, 2022
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179
0
Eric plans to compete in a triathlon. He can average 2 miles per hour in the 1/4 mile swim and 6 miles per hour in the 3-mile run.
Eric plans to compete in a triathlon. He can average 2 miles per hour in the 1/4 mile swim and 6 miles per hour in the 3-mile run. His goal is to finish the triathlon in 2 hours. To accomplish his goal what must his average
read more ..
Guest
May 12, 2022
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277
1
+328
Chantal and Jean start hiking from a trailhead toward a fire tower. Jean is wearing a heavy backpack
Chantal and Jean start hiking from a trailhead toward a fire tower. Jean is wearing a heavy backpack and walks slower. Chantal starts walking at 4 miles per hour. Halfway to the tower, the trail becomes really steep, and Chantal slows down to 2 miles
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Potatobird
May 12, 2022
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278
1
+328
Shelby drives her scooter at a speed of 30 miles per hour if it is not raining, and 20 miles per hour if it is raining. Today she drove in
Shelby drives her scooter at a speed of 30 miles per hour if it is not raining, and 20 miles per hour if it is raining. Today she drove in the sun in the morning and in the rain in the evening, for a total of 16 miles in 40 minutes.
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Potatobird
May 12, 2022
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192
0
plzz help, its due in 1 hour
English has letters that can be vowels. This includes Y, which can be either a consonant or a vowel; for this problem, we'll consider Y a vowel.
The other English letters are always consonants.
How many two-letter "words" can
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Guest
May 12, 2022
+1
390
1
Digits
How many five-digit numbers beginning in a 6 have exactly one pair of identical digits?
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Guest
May 12, 2022
May 11, 2022
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280
1
geometry help please
In triangle XYZ, ZX = 4 root 2, ZY = 4 root 3, and angle X = 60 degrees.
What is angle Y in degrees?
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Guest
May 11, 2022
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252
1
Wearing Outfits
Dustin has five hats, five shirts, five pairs of pants, and five pairs of shoes; he has one of each in blue, green, gray, silver, and gold. Dustin is picky about what he wears: he insists on his shoes being the same color as at least two other articles
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Guest
May 11, 2022
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185
0
Please help me find the answer to this qustion
What is the smallest positive integer n such that 17n == 1234 (mod 7)
Guest
May 11, 2022
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294
1
Algebra
The nonzero roots of the equation x^2 + 6k + x = 0 are in the ratio . What is the value of k?
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Guest
May 11, 2022
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170
0
geometry
Points L and M lie on a circle centered at O, and the measure of arc LM on this circle is 72 degrees. The circle passing through points O, L, and M is drawn. Find the measure of arc LPM on the larger circle, in degrees.
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Guest
May 11, 2022
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308
1
Counting problem
An 8 by 8 checkerboard has alternating black and white squares. How many distinct squares, with sides on the grid lines of the checkerboard (horizontal and vertical) and containing at least 12 black squares, can be drawn on the checkerboard?
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Guest
May 11, 2022
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286
1
System question
Find the value of a so that the system has no solutions.
y = 11x + 14
2y - 4 = ax + 3y
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Guest
May 11, 2022
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245
1
Urgent help
Function f is defined below:
\[f(x) =
\begin{cases}
x + 3 &\quad \text{if } x < -4, \\
x^2-4 &\quad \text{if } x \ge -4.
\end{cases} <#> \]
How may values are there for f(f(x))=5???
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Guest
May 11, 2022
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