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Post New Question
All Questions
+0
237665 Questions
0
447
1
Statistics
Im not understranding how to use the combination rule nCr equation. Im do not get how to calculate using the formula.
Find the probability of getting 5 face cards (king, queen, or jack) when 5 cards are drawn from
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Guest
Oct 10, 2020
0
455
1
counting problem
Acme Corporation has released an alphabet soup in which each of the vowels (A, E, I, O, U) of the English alphabet appears three times (and the consonants do not appear at all). How many five-letter words can be formed from a bowl of Acme Vowel Soup? (Note:
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Guest
Oct 10, 2020
0
487
1
Please help!! TYSM
Is there a possible solution to the system
0.7a + 0.2b = 0.8a + 0.8b
a = -6b
b = - (a/6)
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Guest
Oct 10, 2020
0
504
1
find inverse
Please help me with this
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Guest
Oct 10, 2020
0
535
1
Mark buys two wooden boards that are 7.25 feet long each. The cost of the board is $1.25 per foot, including tax. What is the total cost,
Mark buys two wooden boards that are 7.25 feet long each. The cost of the board is $1.25 per foot, including tax. What is the total cost, in dollars, of Mark’s board? Round your answer to the nearest hundredth place.Round your answer
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Guest
Oct 10, 2020
0
587
2
algebra
Fill in the blank with a constant, so that the resulting constant can be factored as the product of two linear constants:
3ab - 12a - 5b + ___
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Guest
Oct 10, 2020
0
750
1
help plz
A pool measuring 8 meters by 24 meters is surrounded by a path of uniform width, as shown in the figure. If the area of the pool and the path combined is 720 square meters, what is the width of the path?
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Guest
Oct 10, 2020
0
447
0
independent practice
In addition to her salary, Ms. Lopez earns a 3% commission, or fee based on a percent of her sales, on every vacation package that she sells. One day, she sold three vacation packages shown. Fill in the table for each packages' commission. What was her
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Guest
Oct 10, 2020
0
347
1
algebra
Consider two positive even integers less than 19 (not necessarily distinct). When the sum of these two numbers is added to their product, how many different possible values may result?
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Guest
Oct 10, 2020
0
521
2
algebra problem
Can you solve this algebraically?
There are two beakers A and B ,which are filled with acid and water in the ratio 4:3 and 5:3 respectively.In what ratio ,the mixture A and B to be mixed so that the ratio of acid and water to be 3:2
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Guest
Oct 10, 2020
0
505
1
inequality
I need help on this inequality.
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Guest
Oct 10, 2020
0
1973
2
HELP ASAP PLEASE! TYSM!
A scientist has two acid solutions: Artesia, which is a 70% acid solution, and Borromeo, which is a 20% acid solution.
(a) Find the amount of Artesia (in mL) that must be added to 500 mL of Borromeo order to produce a 60% acid solution.
(b)
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Guest
Oct 10, 2020
0
320
0
how tall is the statue?
how tall is the statue?
Guest
Oct 10, 2020
0
398
1
hard probability
What is the probability?
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Guest
Oct 10, 2020
+1
2153
2
+123
In the SuperLottery, three balls are drawn (at random) from ten white balls numbered from to , and one SuperBall is drawn (at random)
In the SuperLottery, three balls are drawn (at random) from ten white balls numbered from to , and one SuperBall is drawn (at random) from ten red balls numbered from to . When you buy a ticket, you choose three
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mathlete2008
Oct 10, 2020
0
447
1
AoPS Math Please review!!
$D$ is on side $\overline {AB}$ of $\triangle ABC.$ We know $\triangle ABC \sim \triangle ACD$ and $\angle A =48^\circ.$ If $BC=BD,$ what is $\angle B$ in degrees?
I know this is written in Latex but okay.
https://latex.artofproblemsolving.com/6/6/f/66f577ad40a16923c75948baa22ffbc74a4d1051.png
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Guest
Oct 10, 2020
0
479
1
counting problem
How many different three-letter sets of initials are possible using the letters A through K?
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Guest
Oct 10, 2020
0
539
1
how to count
Tom got a Mr. Potato Head for his birthday. It came with 3 hairstyles, 2 sets of eyebrows, 1 pair of googly eyes, 2 sets of ears, and 2 sets of lips, and a pair of regular shoes. If a complete Mr. Potato Head personality includes eyebrows, eyes, ears, lips,
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Guest
Oct 10, 2020
0
478
1
need help
Arrange the numbers 2^(500), 3^(400), 4^(300), 5^(200) in increasing order.
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Guest
Oct 10, 2020
0
423
0
Compute 1 - 2 + 3 - 4 + ... + 2019 - 2020.
Compute 1 - 2 + 3 - 4 + ... + 2019 - 2020.
Guest
Oct 10, 2020
0
466
1
ratios
I have a bag containing red, green, blue, and white marbles and the ratio red:green:bue:white is 2:2:5:7. I have 320 marbles. How many blue marbles do I have?
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Guest
Oct 10, 2020
0
483
2
help please
What is angle BXE?
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Guest
Oct 10, 2020
0
1
608
2
+155
HELP ASAP PLEASE!!!!!
Consider the polynomial P(x) = x^4 + 3x^3 + 5x^2 + 7x + 9. Let its four roots be a, b, c, d. Evaluate the expression (a + b + c)(a + b + d)(a + c + d)(b + c + d).
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EvanWei123
Oct 10, 2020
0
486
1
algebra problem
Consider the equation
(4x^3 + 2x^ 2+ 10x + 9)/(2x + 1) = 2x^2 + 5 + 4/(2x + 1)
a) Show that this equation is true when x = 10
b) Explain why this equation is not true when x = -1/2.
c) Show that this equation is true for
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Guest
Oct 10, 2020
0
342
0
geometry
Find x.
Guest
Oct 10, 2020
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