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April

Questions Asked on April 15, 2017

In six years Jill will be twice as old as Amanda. One year ago Jill was nine times older than Amanda. How old is Jill now?I
1. 4 answers
2. asked by Gail
3. 4,370 views
In Philadelphia the number of hours of daylight on day t (t is the number of days after january 1) is modeled by the functionL(t
1. 1 answer
2. asked by SAM
3. 3,493 views
In an elastic collision, a 300 kg bumper car collides directly from behind with a second, identical bumper car that is traveling
1. 1 answer
2. asked by Haya
3. 3,474 views
Find the exact length of the curve.x=(y^4)/8+1/(4y^2), 1 ≤ y ≤ 2.
1. 1 answer
2. asked by alex
3. 3,404 views
Water flows into one end of a horizontal, cylindrical pipe at 2.0 m/s. The pipe then narrows untilits diameter at the opposite
1. 1 answer
2. asked by Alex
3. 3,121 views
Two figure skaters are coasting in the same direction, with the leading skater moving at 4.7 m/s and the trailing skater moving
1. 2 answers
2. asked by Haya
3. 3,038 views
p varies directly as the square of q and inversely as r when p=36, q=3 and r=4 calculate q when p=200 and r=2
1. 3 answers
2. asked by favour
3. 2,961 views
In a two-digit number, the tens’ digit is 1 less than the units’ digit. If the digits are interchanged, the sum of the
1. 9 answers
2. asked by Kittyforevees
3. 2,647 views
A biker traveling at his usual speed can go from his house to work in 4 hours. When the weather is bad, he travels 6 miles per
1. 3 answers
2. asked by Katniss Everdeen
3. 2,463 views
you lift a chair that weighs 50 n to a height of 0.5cm and carry it 10 m across the room how much work do you do on the chair.I
1. 3 answers
2. asked by Hamza
3. 2,419 views
2) Two point charges, Q1 = 5.00 nC and Q2 = -3.00 nC, are separated by 35.0 cm. (a) What is the potential energy of the pair?
1. 1 answer
2. asked by AHMED AYMAN
3. 1,951 views
If you flip three fair coins, what is the probability that you'll get a head on the first flip, a tail on the second flip, and
1. 1 answer
2. asked by Ann
3. 1,891 views
To study the efficiency of its new price-scanning equipment, a local supermarket monitored the amount of time its customers had
1. 1 answer
2. asked by Alyssa
3. 1,796 views
Ernest Rutherford (the first New Zealander to be awarded the Nobel Prize in Chemistry) demonstrated that nuclei were very small
1. 1 answer
2. asked by Haya
3. 1,730 views
Triangle LMN is similar to Triangle XYZThe scale factor of triangle LMN to Triangle XYZ is 2:5 what is the length of the zx
1. 1 answer
2. asked by Olivia
3. 1,656 views
Calculate ΔG° for each of the reactions below in kJ.(a) Sn(s) and Pb2+(aq) (b) Cr(s) and Cu2+(aq)
1. 1 answer
2. asked by Jason
3. 1,585 views
please help :(Bob and Doug play a lot of Ping-Pong, but Doug is a much better player, and wins 90% of their games. To make up
1. 1 answer
2. asked by shana
3. 1,500 views
A uniform rod of length L and mass M is held vertically with one end resting on the floor as shown below. When the rod is
1. 0 answers
2. asked by Haya
3. 1,458 views
You have a grindstone (a disk) that is 92.0 kg, has a 0.490-m radius, and is turning at 83.0 rpm, and you press a steel axe
1. 1 answer
2. asked by Haya
3. 1,288 views
How much work does a 55-kg person do against gravity in walking up a trail that gains 720 m in elevation?
1. 1 answer
2. asked by Ameena
3. 1,229 views
A horizontal beam of length 4 m and mass 7.0 kg has a mass of 2.0 kg and width 0.8 m sitting at the end of the beam (see the
1. 0 answers
2. asked by Haya
3. 1,181 views
Bob and Doug play a lot of Ping-Pong, but Doug is a much better player, and wins 90% of their games.To make up for this, if Doug
1. 0 answers
2. asked by shana
3. 1,165 views
A car is moving at the rate of 80km/h. the diameter of its wheel is 60cm. a, find the number of revolutions per minute that the
1. 1 answer
2. asked by Ms Kay
3. 1,042 views
A cyclist won a bicycle race for seven consecutive years. His "winning" times and "victory" margins (time difference of the
1. 1 answer
2. asked by Kielyn
3. 1,011 views
A long, cylindrical conductor of radius R carries a current I as shown in the figure below. The current density J, however, is
1. 0 answers
2. asked by Sam
3. 1,010 views
An alpha particle (4He) undergoes an elastic collision with a stationary protactinium nucleus (231Pa). What percent of the
1. 0 answers
2. asked by Haya
3. 989 views
The area of the rectangle with length (x + 9) inches and width 6 inches is more than 72 square inches. Which inequality can be
1. 1 answer
2. asked by kool
3. 960 views
A wheel has a constant angular acceleration of 2.5 rad/s2. Starting from rest, it turns through 200 rad.(a) What is its final
1. 1 answer
2. asked by Haya
3. 947 views
A mother is 33 years older than her twin children. In 3 years her age will be twice the combined ages of the twins. How old are
1. 3 answers
2. asked by Katniss Everdeen
3. 935 views
How write an equivalent expression to the expression (17*93) / (17*97)
1. 1 answer
2. asked by Yoanna
3. 919 views
5/8 the number of boys in a school.if there are 240 girls.find the number of boys?
1. 2 answers
2. asked by value
3. 893 views
11. How does the climate of Southeast Asia vary among regions?a. the mainland is much hotter than the islands b. the mainland
1. 5 answers
2. asked by Rose
3. 860 views
A 9 kg block on a frictionless inclined plane at 40° has a cord attached to a pulley of mass 4 kg and radius 11 cm (see the
1. 0 answers
2. asked by Haya
3. 825 views
Consider the equation xy2 − x2y = 6.(a) Find all points on the graph when x = 2. (b) Find a formula for dy dx in terms of x
1. 2 answers
2. asked by Bob
3. 817 views
Calculate the concentration of Ca+2 in a saturated solution of Ca(OH)2 if the Ksp = 6.5x10-6 at 25oC.can someone explain the
1. 2 answers
2. asked by Jae M.
3. 784 views
A uniform rod of mass 2.0 kg and length 8.4 m is free to rotate about one end (see the following figure). If the rod is released
1. 0 answers
2. asked by Haya
3. 722 views
you lift a chair that weighs 50 n to a height of 0.5cm and carry it 10 m across the room how much work do you do on the chair.I
1. 1 answer
2. asked by Hamza
3. 694 views
Suppose you are told that a 95% confidence interval for the average price of a gallon of regular gasoline in your state is from
1. 0 answers
2. asked by Alice
3. 692 views
When the price of paper increases from $250to $256 per ton, the quantity supplied increases from 250 to 270 tons per
1. 1 answer
2. asked by blue smith
3. 658 views
Design a class called SimpleCalculator using psudoecode that contains public methods named add(),subtract(). Each of the methods
1. 0 answers
2. asked by Kimberly
3. 650 views
Suppose that you place a square block of wood with dimensions 12.0 cm x 12.0 cm x 6.0 cminto some water as shown below. The wood
1. 3 answers
2. asked by Alex
3. 635 views
you lift a chair that weighs 50 n to a height of 0.5cm and carry it 10 m across the room how much work do you do on the chair.I
1. 1 answer
2. asked by Hamza
3. 633 views
Open ended question examples?
1. 1 answer
2. asked by Katelyn
3. 623 views
an object moves from point p to q with an average speed of 60m/s and comes back from point q to p with an average speed of
1. 1 answer
2. asked by Mmm!m
3. 584 views
Ashton and molly start out 97.2 miles apart .They begin riding their bicycles toward each other with Aston riding three mph
1. 2 answers
2. asked by Jacob
3. 576 views
if m<1=43 degrees what is m<4
1. 1 answer
2. asked by lady d
3. 547 views
ria distributes sweets to three girls one by one . she gives half of the tofees to each girl. if she is left with three tofees
1. 1 answer
2. asked by deepti
3. 547 views
zinc hyrdoxide + phosphoric acid --> zinc phosphate + water
1. 1 answer
2. asked by Chelo
3. 527 views
What does an open ended question look like?
1. 1 answer
2. asked by Katelyn
3. 521 views
lead(II)nitrate reacts with oxygen gas to produce diphosphorous pentoxide
1. 1 answer
2. asked by Chelo
3. 499 views
lead (II) nitrate reacts with oxygen gas to produce diphosphoroous pentoxide
1. 1 answer
2. asked by Chelo
3. 473 views
In a two-digit number the tens’ digit is 3 more than the units’ digit. The number itself is 17 times the units’ digit.
1. 3 answers
2. asked by Katniss Everdeen
3. 465 views
How long will it take for R 200000 to grow to R240000 if the interest rate is 6% per year in interest compounded every 3
1. 1 answer
2. asked by Anza
3. 464 views
A particle is moving as given by the data below4sin(t)-3cos(t); s(0)=0
1. 1 answer
2. asked by Bob
3. 461 views
Solve the given equationcos(θ) − sin(θ) = 1 I got the answer to be 3pie/2 and 0 but its wrong can someone help Thank you
1. 1 answer
2. asked by Samantha
3. 455 views
HELP!!1.Why is soda considered bad for your teeth, particularly if you do not brush regularly? a) soda adds plaque to your teeth
1. 0 answers
2. asked by OVERDUE @ CONNEXUS
3. 455 views
what's the difference between experimental estimate of sugar concentration and the true sugar concentration?
1. 1 answer
2. asked by Tabitha
3. 451 views
integral of ((1+sin(2x))^0.5)/(sin(x)^2)I tried all kind of substitution, simplification but unable to solve it.Need a hint only
1. 1 answer
2. asked by Sam
3. 447 views
solve the given equationcos(θ) − sin(θ) = 1
1. 2 answers
2. asked by Samantha
3. 417 views
consider the function f(x) = 9/x^3 -10/x^7 let F(x) be the antiderivatice of f(x) with F(1)=0then F(x)=
1. 1 answer
2. asked by Bob
3. 380 views

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