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All Questions
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234931 Questions
0
554
2
math
If angle A and angle B are supplementary angles and angle A is nine times as large as angle B, find the measures of angle A and angle B.
off-topic
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Guest
Mar 5, 2020
0
1054
1
A worker can build a fence in 8 hours. with help of an assistant, the fence can be built in 5 hours. how long should it take the assistant
A worker can build a fence in 8 hours. with help of an assistant, the fence can be built in 5 hours. how long should it take the assistant, working alone, to build the fence?
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Guest
Mar 5, 2020
0
628
1
help!!!
A pleasure boat traveling down the Red River takes the same time to go 14 miles upstream as it takes to go 16 miles downstream. if the current of the river is 2 miles per hour, find the speed of the boat in still water.
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Guest
Mar 5, 2020
0
776
1
please help
Asha and Lucy are selling pencils in a school shop. They sell boxes of pencils and single pencils. Asha sells 7 boxes of pencils and 22 single pencils. Lucy sells 5 boxes of pencils and 2 single pencils. Asha sells twice as many pencils as Lucy. Work out
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Guest
Mar 5, 2020
0
622
2
Question on Venn Diagrams
n[A ∪ (B ∩ C)]
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Guest
Mar 5, 2020
0
339
0
math
help
Guest
Mar 5, 2020
0
1348
1
math
Simon wants to earn as many points as possible in one turn in a game. Two number cubes whose sides are numbered 1 through 6 are rolled. He is given two options for the manner in which points are awarded in the turn. OPTION A: If the sum of the rolls is
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Guest
Mar 5, 2020
0
1031
1
algebra, i think
In a group of kangaroos, the two lightest kangaroos weigh 25% of the total weight of the group. The three heaviest kangaroos weigh 60% of the total weight. How many kangaroos are in the group?
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Guest
Mar 5, 2020
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632
0
+511
Need Help
A researcher randomly surveyed seniors at a high school and asked how many books they read in the past year. The table shows the results.
Which
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kikidylm
Mar 5, 2020
0
661
0
+511
Help Please
In a random sample of 80 students in first grade, the mean hours of sleep per night was 9.4 with a standard deviation of 0.41. In a random sample of 50 students in 12th grade, the mean hours of sleep per night was 7.5 with a standard deviation of 0.52.
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kikidylm
Mar 5, 2020
0
320
0
please help
4 different mathematic books and 5 different science books are to be arrange on the shelf.How many possible arrangement can be made if:
a. The books on the same subjects are to be arrange together?
B. The books are to be arrange alternately?
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Guest
Mar 5, 2020
0
560
0
+511
Need Some Help
In a random sample of 44 downloadable books from a website, the mean cost is $8.58 with a standard deviation of $2.09.
Which interval is the 95% confidence interval for the mean cost of all the downloadable books on the website?
($7.96,
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kikidylm
Mar 5, 2020
0
3801
1
please help with homework.
When Hiroto is writing, there is 0.92 probability that there will be no spelling mistakes on a page. One day, Hiroto writes an essay that is 11 pages long. Assuming that Hiroto is equally likely to have a spelling mistake on each of the 11 pages, what is
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Guest
Mar 5, 2020
0
838
1
nedd help with probability, this is impossible
At a certain gas station, 40% of the customers use regular unleaded gas (A1), 35% use midgrade unleaded gas (A2), and 25% use premium gas (A3). Of those customers using regular gas, only 30% fill their tank (event B). Of those customers using extra gas,
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Guest
Mar 5, 2020
0
1769
3
What is the exact value of sin(cos^−1(−2√2))+tan^−1(sin(π/2))?
What is the exact value of sin(cos^−1(−2√2))+tan^−1(sin(π/2))?
A)−2√2−π
_____
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Guest
Mar 5, 2020
0
392
0
i'm confused
Among 150 IRS employees in a large city, only 30 are women. If 10 of the employees are chosen at random to provide free tax assistance for the residents of this city, find the probability that 4 or more women are selected.
Guest
Mar 5, 2020
0
461
1
please help
An animal shelter spends $5.50 per day to care for each cat and $8.00 per day to care for each dog. Angel noticed that the shelter spent $54.00 caring for cats and dogs on Monday. Angel found a record showing that there were a total of 8 cats and dogs on
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Guest
Mar 5, 2020
0
2078
1
What is the equation of the midline of the function f(x)=5.6sin(2.6x−2.9)−4.2?
What is the equation of the midline of the function f(x)=5.6sin(2.6x−2.9)−4.2?
y=−4.2
y=−2.9
y = 1.8
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Guest
Mar 5, 2020
0
967
1
help needed
A store carries chocolate, vanilla, peppermint, and lemon candies. One day, the store clerk notices that he has fifteen candies total. Furthermore, the number of peppermint and lemon candies together is twice the number of chocolate and vanilla candies
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Guest
Mar 5, 2020
0
551
2
-5 _/75 - sqrt 3
-5 Squareroot75 - sqrt 3
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Guest
Mar 5, 2020
0
510
1
simplest radical form
simplest radical form square root of 180
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Guest
Mar 5, 2020
0
610
1
applying the pythagorean theorem task card
a 10 ladder is leaning against a wall. if the foot of the adder is 3 from the wall,how high up the wall does the top of the ladder reach? Round to the nearest foot
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Guest
Mar 5, 2020
0
711
8
+251
Round error? units not right?
Hi there,
Having a bit of a problem with this one; hope you can help.
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vest4R
Mar 5, 2020
0
457
1
Help
Help
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Guest
Mar 5, 2020
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