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All Questions
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230590 Questions
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806
1
blood types
In the United States, 44% of the people have type O, 42% have type A, 10% have type B, and 4% have type AB blood. Find the probability that there are 4 people with type O blood, 4 people with type A blood, 1 person with type B blood, and 1 person with type
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Guest
Feb 18, 2020
0
715
4
Help...
Find all integers $n$ such that the quadratic $7x^2 + nx - 11$ can be expressed as the product of two linear factors with integer coefficients.
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Guest
Feb 18, 2020
0
379
1
Binary function
Let S={1, 2, 3, 4 ..., n} be a set. Suppose we define a new binary operator • that combines two elements of S to form an element of S (this element can be equal one of the two original elements.
Now suppose x•1=1•x=x. And x•(y•z)=(x•y)•(x•z).
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Guest
Feb 18, 2020
0
910
2
It takes Mickey a total of 45 minutes to ride his bike
It takes Mickey a total of 45 minutes to ride his bike 5 miles to Minnie's house and then walk the remaining mile to school with her. If he rides his bike the entire distance to school at the same rate he rode to Minnie's house, it will take him 30 minutes.
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Guest
Feb 18, 2020
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604
1
help
I have no idea what to do here:
At Jefferson middle school 82 students were asked which sport they plan to participate in for the upcoming year. 20 students plan to participate in track and cross-country,six students in cross country
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Guest
Feb 18, 2020
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523
1
the gram and net mass
cheese cost 14.88 per kg. find the cost of 250 g of cheese
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Guest
Feb 18, 2020
0
651
1
Find 4 consecutive even integers where the product of the two smaller numbers is 72 less than the product of the two larger numbers.
Find 4 consecutive even integers where the product of the two smaller numbers is 72 less than the product of the two larger numbers.
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Guest
Feb 18, 2020
0
1344
1
coordinate geometry
Right triangle ABC is on a coordinate plane. Segment AB is on the line y = 2 and is 3 units long. Point C is on the line x = −1. If the area of ΔABC is 12.5 square units, then find a possible y-coordinate of point C.
Omi67
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Guest
Feb 18, 2020
0
491
1
coordinates
Point P is located at (2, 2) and point T is located at (7, 17). What are the coordinates of the point that partitions the directed line segment PT in a 3:2 ratio?
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Guest
Feb 18, 2020
0
1033
1
help
A bicycle tire with a 12-inch radius is making 175 revolutions per minute. Find the linear speed in miles per hour.
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Guest
Feb 18, 2020
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1302
2
Please help!!!! Let x= sqrt6+ sqrt7 . What two consecutive integers does x lie between?
please explain with words
Let x= sqrt6+ sqrt7 . What two consecutive integers does x lie between? Figure out the answer without using a calculator.
Explain in words how you arrived at your answer, and
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Guest
Feb 18, 2020
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706
1
need help quick
The sum of two numbers is 49. If twice the smaller number is subtracted from the larger number, the result is 10. Find the two numbers.
Omi67
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Guest
Feb 18, 2020
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969
1
can anyone solve this?
An automated machine takes any cardboard rectangle and cuts off a square whose side length is equal to the shorter side length of the rectangle. Peter had a rectangle and, using only the machine, got out of it 2 large squares, 3 medium squares, and 5 small
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Omi67
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Guest
Feb 18, 2020
0
447
2
counting
Suppose four integers are chosen successively at random between 0 and 12, inclusive. Find the probability that:
a. they are all different?
b. not more than 2 are the same?
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Guest
Feb 18, 2020
0
1046
1
hard problem
in four years time khairul's mother will be three times as old as khairul.six years ago,his mother was seven times as old as him.find:khairul's present age,the age of his mother when he was born
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Guest
Feb 18, 2020
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531
1
need help
What is the solution to the system of equations below? y = one-half x minus 4 and y = negative 2 x minus 9
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Guest
Feb 18, 2020
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696
2
Counting question
A pet store has 15 puppies, 6 kittens, and 8 hamsters. Alice, Bob, and Charlie each want to buy a pet. For variety, they each want a different kind of pet. How many ways can Alice, Bob, and Charlie buy pets and leave the store satisfied?
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Guest
Feb 18, 2020
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475
1
please help
What amount of cream that is 30% butterfat must be mixed with 8 gallons of milk that is 4% butterfat to make a blend that is 14% butterfat?
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Guest
Feb 18, 2020
+1
2
1189
2
HELP PLEASE :(
A water tank in the form of an inverted frustum of a right cone has an altitude of 38 ft., and a slant height of 46 ft. The ratio of the upper and lower radii is 5:4. Compute for the measurement of the shorter radius.
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Guest
Feb 18, 2020
0
555
1
a. Given is that A=10q^2 and q=0.6R^2. Write A as a function of R.
a. Given is that A=10q^2 and q=0.6R^2. Write A as a function of R.
b. If R=0,04s^2/3, then S=a*R^b. Calculate a and b
c. Given is that A=p^1.5 + pK^q with p=16 and q=3/4. Write K as a function of A
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Guest
Feb 18, 2020
0
1157
3
geometric progression
In a geometric progression of real numbers, the sum of the first two terms is 7, and the sum of the first six term is 91. Find the sum of the first four terms.
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Guest
Feb 18, 2020
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674
3
please help!!!
Given that triangle ABCAis an irregular triangle, AD is the median which bisects BC, and the green, blue and red regions are squares. If the total area of green region and blue region is 9, find the area of the red region.
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heureka
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Guest
Feb 18, 2020
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348
0
hard geometry
In the figure \triangle△ABC is inscribed in the circle and DF is the angle bisector of \angle∠ACE. If AD = 8 and AC = 6, find BD
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Guest
Feb 18, 2020
0
720
1
defective items
2% of a product are defective. If a lot of 100 items are ordered what is the probability that there are no defective items? What is the probability that there are at least two defective items?
geno3141
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Guest
Feb 18, 2020
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593
2
need help!!!
At 9:00 a.m , Gwen leaves the Batavia and travels at a rate of 40mph . At 10:00 a.m. , Welch leaves Geneva at a rate of 60mph and travels towards Batavia. If the distance between Batavia and Geneva is 115 miles , at what time will Welch pass Gwen?
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Guest
Feb 18, 2020
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