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rachel
Questions (296)
One plane flies straight east at an altitude of 31,000 feet. A second plane is flying west at an altitude of 13,000 feet on a
0 answers
625 views
One plane flies straight east at an altitude of 31,000 feet. A second plane is flying west at an altitude of 13,000 feet on a
1 answer
739 views
In 1980, the computer hard disk had a maximum capacity of 10 to the 7th power bytes. In 2000 computer hard disk capacity had
1 answer
435 views
10n+6=15n-9 In this equation what does n=
1 answer
353 views
10n+6=15n-9 n=
1 answer
394 views
200 milligrams equals how many ml
1 answer
368 views
How do you draw only the top half of a circle in parametric mode on a TI-84 calculator?
1 answer
343 views
5 kg of some liquid at 10 Celsius is mixed with 1 kg of the same liquid at 40 Celsius. What is the final equilibrium
1 answer
556 views
If you know the sine of a number, how do you find its cosine?
1 answer
360 views
if bob uses x eggs for every 200 grams flour. How many eggs does he use if he uses 900 grams flour?
2 answers
531 views
At a closing at 10 a.m. on May 3, 2005, X Corp. delivers $25,000,000 to the seller of a factory using $20,000,000 from Bank One
0 answers
604 views
What properties of light do the frequency and amplitude of light waves represent?
0 answers
411 views
how many atoms of each element are present in five formula units of calcium permanganate?
1 answer
2,180 views
At what angle to the x-axis does the graph of y=sin x pass through (0,0)? Give numerical and visual evidence.
2 answers
359 views
1)Let X have a normal distribution with mean 6 and standard deviation 3. a) What is the probability that X > 8.7
2)What is the
2 answers
626 views
ken ken puzzle
6* 50* 15+ 2/ 36* 20+ 1 2/ 3/ 9+ 7 2 21* 4* 15* 21+ 3/ 12+ 30+ 6 4* 48* 6 27+ 15* 7 14+ 28+ 14+ 7+ 20* 1 9* 2/ 35*
0 answers
395 views
a sample of sodium-24 with an activity of 12 mCi is used to study the rate of blood flow in the circulatory system. If sodium-24
1 answer
1,292 views
why is a factor used to determine the equivalent dose?
1 answer
315 views
How much heat is necessary to raise the temperature of a 15.0g metal from 15 degrees celsius to 25.0 degrees celsius?
2 answers
525 views
A total of 506 J of heat are added to 50.0 g of water initially at 15.0 degrees Celsius. What is the final temperature of the
1 answer
824 views
Alex scored 13 points in the basketball game. This was 1/5 of the total points the team scored. Write and solve an equation to
3 answers
1,677 views
why does the change for the atomic radii of the elements in period 3 look similar to period 2?
0 answers
396 views
is resistant to corrosion physical or chemical
0 answers
386 views
joules needed to melt a 525 g ice cube at 0 degree C and to warm the liquid to 15 degrees C (two steps please show work)
1 answer
1,243 views
The Russian mathmatician Pafnuti L. Chebychev pved a remarkable theorem called Chebybchev's Inequality: In any data set, if p is
0 answers
427 views
how do i solve system by elimination
6x-y=18 2x+y=2
1 answer
408 views
a fish tank holds 35 gallons of water. how many pounds of water are in the fish tank?
1 answer
1,170 views
Water is 11.2% by mass hydrogen. How many kilograms of water would contain 5.0g of hydrogen. (using conversion factors)
1 answer
514 views
water is 88.8% by mass oxygen. How many grams of water would contain 2.25kg of oxygen?
3 answers
1,224 views
suppose a data set has n elements with n greater than or equal to 6. as you know, if n is even, then the median of the set does
1 answer
608 views
on a 50-point history test the median was 34 and Q1 was 28. one student got a perfect paper and qualified as an outlier under
1 answer
909 views
If a truck is moving at 20m/s forward with relative to the ground, and a ball is fired 20m/s backward from the truck, what would
1 answer
431 views
the radius of a spherical tank 0.7 meter. how many liters of water can the tank hold?
1 answer
1,349 views
A stock solution containing Mn2+ ions was prepared by dissolving 1.168 g pure manganese metal in nitric acid and diluting to a
1 answer
888 views
Calculate the change in pH when 4.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq)
1 answer
880 views
find the area between the curve y= 1 divided by (1=3x)^2
0 answers
291 views
the area under the curve y= square root of 9-x^2 with coordinates x=-3 and 3 , find the volume rotated aroudn the x-axis
1 answer
364 views
If you use 1 gram of salacylic acid and 3ml of acetic anhydride & 3 drops of phosphoric acid and 1 ml of water after boiling =
1 answer
774 views
1 ) If the mass of the Moon is 7.4 x 1022 kg and its radius is 1.74 x 106 m, compute the speed with which an object would have
3 answers
1,474 views
John Johnson set a world record for the "100.0" m run with a time of 9.86 s. If, after crossing the finish line, John walked
1 answer
1,049 views
John Johnson set a world record for the "100.0" m run with a time of 9.86 s. If, after crossing the finish line, John walked
1 answer
1,021 views
If a planet has a semimajor axis of 2 AU (astronomical units)
a) what would the semimajor axis of a superior planet be if the
0 answers
948 views
A hot-air balloon is rising upward with a constant speed of 2.50 m/s. When the balloon is 3.00 m above the ground, the
1 answer
1,960 views
Assume that the Earth is spherical and recall that latitudes range from 0° at the Equator to 90° N at the North Pole. Consider
2 answers
676 views
Assume that the Earth is spherical and recall that latitudes range from 0° at the Equator to 90° N at the North Pole. Consider
2 answers
694 views
A uniform ladder 10.0 m long is leaning against a frictionless wall at an angle of 60.0° above the horizontal. The weight of
1 answer
669 views
how do i find polyatomic ions?
1 answer
375 views
A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 25.9° with respect to the
1 answer
1,300 views
An elevator (cabin mass 540 kg) is designed for a maximum load of 3500 kg, and to reach a velocity of 4 m/s in 3 s. For this
2 answers
879 views
f:(x)= x^2+5 find f(0)
1 answer
284 views
a+4(6a+2b^2)+(a^2-6b^2)
1 answer
312 views
Maria sells paintings in an art gallery. She ears $375 each week plus a commission equal to 2.5% of her sales. This week her
1 answer
1,365 views
Which expression is the greatest common factor of (125t^3 m^5+60t^4 m^4+85t^5 m^2)
1 answer
724 views
Evaluate: 2m^2-(n-p) when m=3, n=-2, p=-4
3 answers
353 views
What is the present value of an annuity that consists of 28 monthly payments of $260 at an interest rate of 8% per year,
0 answers
583 views
There are 16 coins in a piggy bank. The coins are all nickels and dimes. All together the total amount of money in the bank is
1 answer
662 views
Solve by substitution.
y=.8x+72 20x+32y=48 How do you get y? i got the x part but i can't seem to get the y part.
3 answers
589 views
Maximimum profit:
you operate a tour service that offers the following rates: (1) $200 per person if 50 people (the minimum
1 answer
4,698 views
solve by substitution.
0.5x+0.25y=36 y+18=16x
1 answer
611 views
This might be a hard question to answer but I need an example for my speech for speech class. My speech is a persuasive on why
2 answers
560 views
write an equation for the line that is perpendicular to the given line and that passes through the given point.
(6,4);y=3x-2
1 answer
376 views
whay would a leaf be a good rug for a lady bug
1 answer
384 views
water in a paper conical filter drips into a cup. let x denote the height of the water in the cup. if 10 in^3 of water are
2 answers
1,067 views
a billboard 20ft tall is located on top of a building with its lower edge 60 ft above the level of a viewers eye.
how far from a
1 answer
2,046 views
a laser beam with wavelength 632.8nm is incident normal to the plane of a diffraction grating with a slit separation d=2000nm.
0 answers
785 views
I am doing a speech on how to decorate a cupcake. But.. i do not know how to start it. I need an attention grabber any ideas?
3 answers
763 views
When the Sun is directly overhead, a hawk
dives toward the ground at a speed of 3.07 m/s. If the direction of his motion is at an
0 answers
978 views
im having so much trouble figuring out how to get these answers. i already know the answers i just need to figure out how to get
1 answer
648 views
3n+40=-6(-2n+1)+1
5 answers
274 views
water is poured into a conical paper cup so that the height increases at the constant rate of 1 inch per second. if the cup is 6
1 answer
3,150 views
the cross section of a 5-ft long trough is an isosceles trapezoid with a 2 foot lower base, a 3-foot upper base, and an altitude
1 answer
4,952 views
A ladder is resting against a wall. the foot of the ladder is 8 feet from the wall, and the top of the ladder is 19 feet from
1 answer
585 views
a large ferris wheel is 100 feet in diameter and rises 10 feet off the ground. each revolution of the wheel takes 30 seconds. A)
1 answer
1,422 views
What is the first step in replication?
0 answers
417 views
problem> mystery numbers: Bob is thinking of 2 numbers their sum is 26. their product is 165. what numbers is bob thinking
1 answer
560 views
what measures does patrick henry say the colonists have already tried in their dealings with england?
2 answers
751 views
Let P= (V^2)R / (R+r)^2
Calculate dP/dr, assuming that r is variable and R is constant.
3 answers
4,452 views
need help with the following question. if earth has a mass of 6.0*10^24 kg and a radius 6.4*10^6 m:
a) find the change in
0 answers
662 views
solve for sinx=cos2x (between 0 and 2pi)
2 answers
483 views
find cosx and sinx if tanx = 4
2 answers
471 views
The side of a square is measured to be 12 inches with a possible error of ±0.02 inch in that measurement. If x is the exact
1 answer
1,430 views
What are the codes for Intrauterine pregnancy, spontaneous delivery, single live born?
0 answers
703 views
Physics: maximum force that can be applied to move an object?
What is the maximum force F which can be exerted? Given: The
0 answers
784 views
In the reaction 2SO2 (g) + O2 (g) 2SO3 (g), which change would cause the greatest increase in the concentration of SO3?
2 answers
3,520 views
a cross section of a hollow circular pipe shows that its inner diameter is 2 1/10inches and that the pipe is 3/5inch thick. what
1 answer
529 views
what is the integral of [e^(11x)]/[e^(11x)+8]
1 answer
393 views
what does juliet ask romeo to do and what does she promise to do
1 answer
392 views
A coin is tossed 13 times. How many different outcomes have at least 2 heads ?
0 answers
728 views
give two reasons that chinas policy of limiting trade with foreigners ended after the 1700's
1 answer
393 views
two equally charged spheres, X and Y, repel each other with a force of 8.0 x 10^-6 N when placed a certain distance apart.
1 answer
1,216 views
On the ADA for Keith Konklin, the number 333-2589 should be placed in block A( #7 B) # 18 C0 # 19 D) #31
1 answer
519 views
which of the following codes should you insert in block # 217?
802.20 802.30 99204 J9293
1 answer
442 views
Radioactive radium has a half-life of approximately 1599 years. What percent of a given amount remains after 100 years?
1 answer
765 views
Radioactive radium has a half-life of approximately 1599 years. What percent of a given amount remains after 100 years?
2 answers
1,941 views
What is 10-(-5)=?
1 answer
319 views
what does it mean when you find a three digit code highlited in the tabular list A, Poisoning
B. Accident, C. Theraputic Use D.
0 answers
442 views
what does it mean when you find a three digit code highlited in the tabular list
3 answers
445 views
How do you write a conversion factor relating cubic centimeters and milliliters?
0 answers
855 views
What role do condensation nuclei play in condensation? (cloud flormation)
I did some research and found that the condensation
1 answer
715 views
how to find the height of a trapezoid with median 12 and area 84
2 answers
3,279 views
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