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Post New Question
All Questions
+0
232635 Questions
+1
417
1
+13
Help Please, I Don't Understand!
At a particular school, all students participate in at least one out of three activities: debate, music, and community service. 3 students do all three activities, 21 students do two or more activities, half of all students participate in music, and the
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Exodush21
Feb 19, 2021
0
241
0
arithmetic progression
The number of terms in an arithmetic progression is even. The sum of odd-numbered terms in it is 24 and the sum of the even-numbered terms is 30. If the last term exceeds the first term by 21/2, then find the number of terms in the arithmetic
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Guest
Feb 19, 2021
0
333
1
expected value
In a game that costs $\$3$ to play, a fair die is rolled. If a five or a six is rolled the player receives $\$6$. If any other number is rolled, the player receives nothing. What is the expected value of the game?
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Guest
Feb 19, 2021
0
860
4
Help
Two circles inside a square are externally tangent to each other and are tangent to certain sides of the square as shown. The perimeter of the square is What is the sum of the circumferences of the two circles?
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Guest
Feb 19, 2021
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319
1
help me!!!
is this true? Lines can be parallel if they have the same slope and same y-intercept.
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Guest
Feb 19, 2021
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348
1
parabola
Which equation matches this parabola? (The directrix is line y = -2.)
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Guest
Feb 19, 2021
0
388
1
If there is no number by x, is x equal to 1? (Note, that this is in algebr
If there is no number by x, is x equal to 1? (Note, that this is in algebr
a 1)
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Guest
Feb 19, 2021
0
408
1
problem on area
Find the area of the composite figure.
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Guest
Feb 19, 2021
+1
589
2
+407
need help please asap
Two triangles are similar. The smaller triangle has a perimeter of 2 units and an area of 2 square units. The perimeter of the larger triangle is 3 square units. What is the area of the larger triangle?
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ss333
Feb 19, 2021
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380
1
card probability
there are two packs of cards each contain 52cards. one card is drawn from each pack. find the probability that at least one of them will be the ace of hearts.
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Guest
Feb 19, 2021
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529
1
word problem
Ali, Clara, and Shan raised money for new books for the school library. Ali raised 20% more than Clara and $58 more than Shan. Clara raised 1/4 more than Shan.
A) How much money did they raise altogether
B) What percent of the total money did Clara
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Guest
Feb 19, 2021
0
377
3
pls help
What is the area of the shaded region?
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Guest
Feb 19, 2021
0
217
0
counting problem
From ten people, how many ways can you form a team of eight people consisting of a project manager, two (equivalent) deputy project managers, and five (equivalent) engineers?
Guest
Feb 19, 2021
-1
421
2
+230
help pls im behind
How many polynomials of the form $x^2 + mx + n$ are there with positive integer roots and $n = 28?$
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wizzymath
Feb 19, 2021
-1
563
1
+230
hey besties need help
It takes four painters working at the same rate $1.25$ work-days to finish a job. If only three painters are available, how many work-days will it take them to finish the job, working at the same rate? Express your answer as a mixed number.
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wizzymath
Feb 19, 2021
-1
461
1
+230
hey help pls
What is the greatest integer value for $m$ such that $5m-3 > 8m+21$?
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wizzymath
Feb 19, 2021
-1
512
1
+230
pls help besties
On a Cartesian coordinate plane, points $(1,2)$ and $(7, 4)$ are opposite vertices of a square. What is the area of the square?
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wizzymath
Feb 19, 2021
0
526
1
+230
Help pls
The sum of three different numbers is 67. The two larger numbers differ by 7 and the two smaller numbers differ by 3. What is the value of the largest number?
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wizzymath
Feb 19, 2021
+1
1708
2
+27
Triangle XYZ has vertices X(1, –1), Y(3, 4), and Z(5, –1).
Triangle XYZ has vertices X(1, –1), Y(3, 4), and Z(5, –1). Nikko rotated the triangle 90° counterclockwise about the origin. What is the correct set of image points for triangle X’Y’Z’?
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Aphmau
Feb 19, 2021
0
232
0
series question
Find the sum of the first 9 terms of the series $\frac{1^3}{1} + \frac{1^3 + 2^3}{1 + 3} + \frac{1^3 + 2^3 + 3^3}{1 + 3 + 5} + \dots$
Guest
Feb 19, 2021
0
368
1
algebra
While Tristan was visiting his sister in Greenville, he bought a suitcase that was marked down 25%.from the original price of 40 dollars. If the sales tax in Greenville is 10%, what is the total cost of the suitcase?
ElectricPavlov
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Guest
Feb 19, 2021
0
280
1
range
Find the set of values of a for which the range of f(x) = (x^2 + a)/(x + 4) is the set of all real numbers.
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Guest
Feb 19, 2021
0
355
1
need expert help
Triangle ABC has the vertices (1,2), (3,5), and (6,3) Find the coordinates of the orthocenter.
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Guest
Feb 19, 2021
0
391
3
Ashley has 36 coins
Ashley has 36 coins totaling $4.20 in quarters and dimes. How many of each coin does she have?
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Guest
Feb 19, 2021
0
369
1
quadratics help
The difference of the roots of the quadratic equation $x^2 + bx + c = 0$ is $|b - 2c|$. If $c \neq 0$, then find $c$ in terms of $b$.
TYSM!
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Guest
Feb 19, 2021
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