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Determine an equation of the line of intersection of the planes 4x − 3y − z = 1 and 2x + 4y + z = 5.
1. 1 answer
2. 1,242 views
An atom of sodium-23 (atomic number = 11) has a positive charge of +1. Given this information, how manyelectrons does it have?
1. 1 answer
2. 745 views
A hydrogen atom has one proton, two neutrons, and no electrons. Is this atom an ion?
1. 2 answers
2. 962 views
In baseball, the length of the path between each pair of consecutive bases is 90 feet. The paths form right angles. How far does
1. 4 answers
2. 5,049 views
A trapezoid has a perimeter of 14 feet. What will the perimeter be if each side length is increased by a factor 7?A. 21 feet B.
1. 2 answers
2. 1,695 views
A rectangle has an area of 6 square meters. What will be the area of the rectangle if each side length is increased by a factor
1. 3 answers
2. 1,624 views
A rectangular prism has a base that is 5 cm by 7 cm and a height of 12 cm. If all dimensions are doubled, what happens to the
1. 3 answers
2. 1,201 views
A triangle is enlarged by a factor of 3. The perimeter of the new triangle is 36 feet. What could be the lengths of the sides of
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2. 1,444 views
The circumference of a circle changes from 20 to 4 after a dilation. What was the scale factor of the dilation?A. 1/25 B. 1/5 C.
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2. 974 views
A circle with a radius of 1/2 ft is dilated by a scale factor of 8. Which statements about the new circle are true? Check all
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2. 2,798 views
What is the height of a cylinder with a volume of 384π cubic inches and a radius of 8 inches? Round to the nearest tenth of an
1. 1 answer
2. 725 views
A cylindrical water tank has a diameter of 20 feet and a height of 15 feet. How much water is needed to fill the tank?
1. 3 answers
2. 1,722 views
You will often see proj (Vector a onto Vector b) written as projb⃗ a⃗ .Show that projb⃗ a⃗ =(a⃗ ⋅b⃗/ b⃗ ⋅b⃗
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2. 756 views
A stairway runs up the edge of thepyramid. From bottom to top the stairway is 92 m long. The stairway makes an angle of 70° to
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2. 3,692 views
I have to do a powerpoint on the Black Death. Where can I find the best information to write about it?
1. 2 answers
2. 485 views
How does the volume of a rectangular prism change if the width is reduced to 1/10 of its original size, the height is reduced to
1. 5 answers
2. 1,152 views
How does the volume of a square pyramid change if the base area is quadrupled and the height is reduced to 1/9 of its original
1. 6 answers
2. 1,291 views
The volume of a square pyramid is equal to _____ times the volume of a cube where the bases are the same, but the square pyramid
1. 6 answers
2. 1,312 views
If a cylinder’s radius and height are each shrunk down to a third of the original size, what would be the formula to find the
1. 1 answer
2. 1,373 views
Andrea has a yard shaped like parallelogram ABCD. The garden area, parallelogram EFGB, has an area of 105 ft. If Andrea wants to
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2. 1,001 views
Explain why knowing the height is needed when finding the perimeter of a right triangle.
1. 2 answers
2. 2,618 views
Maria is making a stained glass window in the form of a kite. The width of the window must be 15 in., and she only has enough
1. 2 answers
2. 1,772 views
Hello I'm doing a powerpoint on the history of computers for business but I just have to look for people. Do you mind giving me
1. 2 answers
2. 600 views
What were the crusades? What motivated most Europeans to join the crusades?
1. 1 answer
2. 691 views
tomorrow is my friend's birthday and she's turning 15 so I'm writing her a birthday card and I was wondering if I did any
1. 4 answers
2. 690 views
A woman wearing high-heeled shoes stands on a wooden floor. Her total weight is 480N and acts equally on each foot.Why are marks
1. 0 answers
2. 471 views
240n/2cm^2
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2. 345 views
240n/40 cm^2
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2. 328 views
A woman wearing high-heeled shoes stands on a wooden floor. Her total weight is 480N and acts equally on each foot.Sometimes all
1. 0 answers
2. 459 views
A woman wearing high-heeled shoes stands on a wooden floor. Her total weight is 480N and acts equally on each foot.Sometimes all
1. 0 answers
2. 432 views
A woman wearing high-heeled shoes stands on a wooden floor. Her total weight is 480N and acts equally on each foot.Sometimes all
1. 0 answers
2. 425 views
Analyze the conditional statement below and complete the instructions that follow.You will receive the trophy if you win the
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2. 954 views
Which of the following statements is not always true?A. In a rhombus, the diagonals bisect opposite angles. B. In a rhombus, the
1. 2 answers
2. 3,176 views
Which parallelograms have perpendicular diagonals?A. rectangle, rhombus B. square, rhombus C. square, rectangle D. none I know
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2. 2,025 views
How far does a wave travel in three cycles?
1. 2 answers
2. 624 views
The distance from the crest of a wave to the next crest is 10 centimeters.The distance from a crest of this wave to a trough is
1. 0 answers
2. 636 views
How do the beliefs of being a Christian and being a Crusader contradict each other?How are the ideas of the Crusades used today
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2. 759 views
Who were the Seljuk Turks? What did they do?
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2. 539 views
Have you ever wanted to know what people said and thought about you when you weren't around? If you could disguise yourself in
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2. 470 views
describe a soggy, wet day. use sensory details.
1. 2 answers
2. 383 views
Kinetic energy and Potential energy are often considered to be forms of mechanical energy. List three other forms of energy and
1. 1 answer
2. 799 views
1.The sporophyte generation produces spores that grow into a(n) (1 point) gametophyte. gymnosperm. angiosperm. pupa. 2.
1. 9 answers
2. 2,743 views
Let y =x arcsin x, x is an element of ]-1, 1[. Show that d^2y/dx^2 = 2-x^2/(1-x^2)^3/2
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2. 481 views
I completely forgot the rules but....if you have ((1-x)^1/2)^2 Then would you multiply the exponents to get 2/2 = 1 or add them
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2. 483 views
Let y = arcsin x, x is an element of ]-1, 1[. Show that d^2y/dx^2 = 2-x^2/(1-x^2)^3/2
1. 7 answers
2. 421 views
cos2x-sinx=0. Factor and solve for sinx
1. 5 answers
2. 658 views
A 660 kg car is being pushed along a flat parking lot at a constant speed of 1.52 m/s. The coefficient of friction between the
1. 1 answer
2. 549 views
Consider an ideal spring that has an unstretched length l0 = 3.9 m. Assume the spring has a constant k = 20 N/m. Suppose the
1. 1 answer
2. 732 views
We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30
1. 1 answer
2. 846 views
We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30
1. 0 answers
2. 432 views
An elevator is stopped at the ground floor. It starts moving upwards at constant acceleration a>0 for 5 seconds. It then keeps a
1. 6 answers
2. 563 views
An elevator is stopped at the ground floor. It starts moving upwards at constant acceleration a>0 for 5 seconds. It then keeps a
1. 1 answer
2. 605 views
We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30
1. 1 answer
2. 441 views
We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30
1. 45 answers
2. 765 views
if x,y, and z are different integers and x+y+z=3, what is the least possible value of z?-3 1 2 3 cannot be determined from
1. 1 answer
2. 316 views
if c+4=2a+7b, what is the value of c+6 in terms of a and b?4a+7b 2a+7b-2 2a+5b+2 2a+9b 2a+7b+2
1. 1 answer
2. 1,010 views
when a large cake is cut into pieces that each weigh 3 ounces, it yields 110 pieces. how many pieces would the cake yield if it
1. 3 answers
2. 790 views
a total of $24.00 is to be divided among three children in amounts proportional to their ages. if the children's age are 9, 12,
1. 1 answer
2. 393 views
The velocity of a vehicle is uniformly reduced from 72km/h to 24km/ over a distance of 250m down a decline of 1:25 the mass of
1. 1 answer
2. 472 views
1) how many billions of years will it take 1000 grams of uranium-238 to decay to just 125 grams?2) a researcher had 37.5 g left
1. 0 answers
2. 812 views
a number cube is rolled 2 times in a row. what is the probability of rolling a number greater than 2 both times?
1. 1 answer
2. 1,025 views
Beginning with cars made in 1981, all vehicles must contain a 17-digit Vehicle Identification Number (VIN). The first 3
1. 2 answers
2. 710 views
Calculate the density of atoms on plane (001) in Lithium
1. 1 answer
2. 444 views
in the past professional baseball was played at the astrodome in Houston, Texas. the astrodome has a maximum height of 63.4 m.
1. 1 answer
2. 1,221 views
Check my answers, please? I put an asterisk next to which ever ones are my answer. Thanks!Why do you think the Inuit have
1. 28 answers
2. 8,238 views
How do I solve this exponent problem? I understand the exponent rules, but I getting 1 but 1 is not the answer! I don't want
1. 1 answer
2. 922 views
calculate the energy in joules lost when 70.0 grams of water cools from 86.4 celsius to 7.1 celsius
1. 1 answer
2. 909 views
In the U.S., 4634 million pounds of apples were consumed in 2002. The population of the U.S. in that year was 290 million.1. a
1. 2 answers
2. 565 views
In a water pistol, a piston drives water through a larger tube of radius 1.00 cm into a smaller tube of radius1.00 mm. (a) If
1. 2 answers
2. 1,168 views
The British Sovereign coin is an alloy of gold and copper having a total mass of 7.988 g and is 22-karat gold.(a) Find the mass
1. 1 answer
2. 877 views
A sample of light brown powder found in the kitchen of an alleged drug house gives a blue precipitate with cobalt thiocyanate.
1. 1 answer
2. 512 views
water is moving at a velocity of 2m/s through a hose with an internal diameter:1.60cm. What is the flow rate in liters per
1. 0 answers
2. 1,082 views
The underlined words (I put them in parantheses) are an example of a(n) ___________.(When the earth, moon, and sun are in line),
1. 3 answers
2. 2,729 views
Two astronaut, as shown in the figure, each having a mass of 88.0 kg, are connected by a 10.00 m rope of negligible mass. They
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2. 471 views
A beam resting on two pivots has a length of L = 9.00 m and mass M =89.0 kg. The pivot under the left end exerts a normal force
1. 0 answers
2. 808 views
A 6.00 kg mass is connected by a light cord to a 1.00 kg mass on a smooth surface as shown in the figure. The pulley rotates
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2. 582 views
A 1,660 kg car is parked on a hill with a slope of 8.0°. Its brakes and transmission are locked in position to keep the car
1. 1 answer
2. 1,295 views
A sled whose total mass with cargo is 30.0 kg rests on ice. The coefficient of static friction is 0.20, and the coefficient of
1. 1 answer
2. 828 views
If you walk 3.0 km on a straight road and then find that you are 1.5 km east of your starting point and some unknown distance
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2. 1,305 views
A balloonist drops an apple weighing 1.5 N over the side of the balloon's gondola. As it falls and increases speed, the drag
1. 1 answer
2. 549 views
gotta find the first and second derivative of f(x)=x^2/(x-1)thanks for help!
1. 1 answer
2. 388 views
do you think there is a difference in the absolute force generated by males and females?I think the answer is yes just by the
1. 0 answers
2. 443 views
The popularity of an individual Hindu deity was largely a reflection ofa) its ranking by the Hundred Schools of Thought. b) the
1. 2 answers
2. 1,140 views
1. Find an ordered pair that represents 6 vector v - 5 vector w if vector v =(9,5) and vector w = (6,9).2. Find an ordered
1. 1 answer
2. 769 views
3. What is the rhyme scheme of the following Anne Bradstreet poem?To Her Father with Some Verses Most truly honored, and as
1. 6 answers
2. 1,504 views
The following information was made available from theincome statement and balance sheet of Lauren Company. Item 12/31/10
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2. 578 views
Can you help me break this into two clases, and Employee class and the default program class? I have to include a mutator and
1. 0 answers
2. 456 views
Which of the following is TRUE?A It was recently discovered that the pituitary gland does not actually do anything. B The
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2. 642 views
Write a paper that describes the character’s personality in terms of the Big Five personality traits.
1. 1 answer
2. 502 views
1.Fill in the correct comparative form: Fußball ist ______ Golf. (interessant) A mehr interessanter als B interessanter als C
1. 3 answers
2. 651 views
Fill in the correct comparative form: Surfen ist ______ Jagen. (gut)A besser als B mehr gut als C schlechter als D mehr besser
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2. 887 views
I have most of them done but would like to have these ones double checked... Please Help!!!2. The balance sheet format that
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2. 619 views
The release of eggs and sperm near each other into the water occurs duringA spawning. B development. C growth. D all of the
1. 2 answers
2. 776 views
A blue minivan weighing 20,000 Newtons and traveling east at 100 km/hron a familiar turnpike approaches the toll booth. What is
1. 1 answer
2. 464 views
what are the half reactions fora) Cr(NO3)2 b) Pb(NO3)2 I know that Cr and Pb are: Cr^2+ +2e- -> Cr Pb^2+ +2e- -> Pb I just don't
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2. 588 views
This is a 100 question hw sheet and I have answered all but i am unsure about a few please help!!!8. Which of the following
1. 3 answers
2. 494 views
This is a 100 question hw sheet and I have answered all but i am unsure about a few please help!!!8. Which of the following
1. 1 answer
2. 951 views
This is a 100 question hw sheet and I have answered all but i am unsure about a few please help!!!8. Which of the following
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2. 577 views
The contrarian approach to investing is best illustrated byA. staying out of the market no matter what experts are saying. B.
1. 2 answers
2. 708 views
Which of the following statements about the money invested in a traditional IRA accountis correct? A. It isn’t taxed until
1. 2 answers
2. 448 views

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