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Kelly

Questions and answers by Kelly, page 5

Questions (805)

Solve for x. 4x(x-1)-5x(x)=3
1. 3 answers
2. 323 views
3y-24/14 divided by y-8/4y
1. 3 answers
2. 395 views
Divide: (20b^(3)+17b^(2)+18b+43)÷(4b+5)
1. 4 answers
2. 457 views
A rectangle garden is 30 ft by 40 ft. Part of the garden is removed in order to install a walkway of uniform width around it.
1. 7 answers
2. 1,423 views
In 35.0 s, a pump delivers 0.574 m3 of oil into barrels on a platform 25.5 m above the intake pipe. The oil's density is 0.820
1. 1 answer
2. 923 views
A roof rises 1.7 feet vertically and 13.3 feet horizontally. What is the grade of the roof in percentage
1. 1 answer
2. 370 views
Scores on a certain nationwide college entrance examination follow a normal distribution with a mean of 400 and a standard
1. 2 answers
2. 751 views
Ethane (C2H6) reacts with oxygen to produce carbon dioxide and water. Assuming there is an excess of oxygen, calculate the mass
1. 4 answers
2. 2,166 views
320g of sulfur dioxide react with 32.0g of oxygen and excess water to form sulfuric acid (H2SO4)a. What is the limiting reagent?
1. 3 answers
2. 874 views
What mass of sodium bromide (NaBr) is required to make 250 cm3 of a 0.35 mol.dm-3 solution?
1. 3 answers
2. 543 views
A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 59.7° above the horizontal. The rocket is fired
1. 2 answers
2. 1,276 views
Adam has a hockey rink in his backyard. The current dimensions are 10m by 20m. Adam wants to have a hockey tournament and needs
1. 4 answers
2. 423 views
Farmer John is building a pen to keep his pig in. John has 40m of fencing. He will only need to make 3 sides to the pen because
1. 2 answers
2. 657 views
how many grams of sodium are used to prepare 50 boxes of crackers? sodium per serving is 140mg, serving size is .50 oz for 6
1. 4 answers
2. 3,003 views
Can somone please explain how to do this problem:How many cubic centimeters of olive oil have the same mass as 1.00L of
1. 3 answers
2. 765 views
A soccer player kicks the ball toward a goal that is 27.8 m in front of him. The ball leaves his foot at a speed of 18.5 m/s and
1. 2 answers
2. 507 views
Joe and Bob manufacture bikes. Joe can make 12 bikes in 8 hours while Bob can make 6 bikes in 12 hours. Working together how
1. 1 answer
2. 390 views
Joe and Bob manufacture bikes. Joe can make 12 bikes in 8 hours while Bob can make 12 bikes in 6 hours. Working together how
1. 1 answer
2. 393 views
A ball is thrown upward from the top of a 50.0 m tall building. The ball's initial speed is 12.0 m/s. At the same instant, a
1. 3 answers
2. 821 views
45 1/5 x 3/4 =
1. 1 answer
2. 221 views
A 1.7 cm thick bar of soap is floating in water, with 1.1 cm of the bar underwater. Bath oil with a density of 890.0 kg/m3 is
1. 1 answer
2. 466 views
A 1.7 cm thick bar of soap is floating in water, with 1.1 cm of the bar underwater. Bath oil with a density of 890.0 kg/m3 is
1. 1 answer
2. 506 views
Assume that you select 2 coins at random from 5 coins: 3 dimes and 2 quarters.What is the probability that all of the coins
1. 3 answers
2. 1,364 views
A group of students who are selecting 2 of their group at random to give a report, but assume that there are 5 males and 3
1. 2 answers
2. 561 views
Assume that you randomly select 8 cards from a deck of 52.What is the probability that all of the cards selected are hearts?
1. 4 answers
2. 2,335 views
If 0.48 g of sulfur are added to 200 g of carbon tetracholoride, and the freezing point of the carbon tetrachloride (Kf=30
1. 4 answers
2. 560 views
If 0.48 g of sulfur are added to 200 g of carbon tetracholoride, and the freezing point of the carbon tetrachloride (Kf=30
1. 4 answers
2. 1,685 views
Explain how to calculate margin of error.What effect does increasing your sample size have on the margin of error? What effect
1. 1 answer
2. 474 views
Explain how to calculate margin of error.What effect does increasing your sample size have on the margin of error? What effect
1. 1 answer
2. 476 views
Explain how to calculate margin of error.What effect does increasing your sample size have on the margin of error? What effect
1. 2 answers
2. 561 views
Take the radius of the earth at the equator to be 6380 kma. Find the speed the speed of an object at the equator due to the
1. 1 answer
2. 1,102 views
Take the radius of the earth's orbit to be 1.5 x 1011 m.a. Using a year to be 365 days, find the speed of the earth as it moves
1. 2 answers
2. 573 views
x^2+1/4x+_?__
1. 1 answer
2. 214 views
Determine the value for the acceleration due to gravity at the surface of the planet Mars, given the following data: Mass of
1. 2 answers
2. 596 views
How would you analyze a solution known to contain Hg22+ and Cu2+?
1. 4 answers
2. 432 views
calculate the specific rate constantA] (mol/L) [B] (mol/L) Rate of appearance of C (mol/L-hr) 1.0 ×10^-2 1.0 0.30×10^−6 1.0
1. 3 answers
2. 410 views
calculate the specific rate constantA] (mol/L) [B] (mol/L) Rate of appearance of C (mol/L-hr) 1.0 ×10^-2 1.0 0.30×10^−6 1.0
1. 1 answer
2. 343 views
calculate the specific rate constantA] (mol/L) [B] (mol/L) Rate of appearance of C (mol/L-hr) 1.0 ×10^-2 1.0 0.30×10^−6 1.0
1. 4 answers
2. 386 views
Given info:A] (mol/L) [B] (mol/L) Rate of appearance of C (mol/L-hr) 1.0 ×10^-2 1.0 0.30×10^−6 1.0 ×10^−2 3.0
1. 1 answer
2. 398 views
Given info:Reaction: 3A+2B--->2C+D {A] (mol/L) 1.0 ×10^-2 1.0 ×10^−2 2.0 ×10^−2 2.0 ×10^−2 3.0 ×10^−2 [B] (mol/L)
1. 1 answer
2. 888 views
A 20.2 mL sample of a weak monoprotic acid, HX, requires 50.0 mL of 0.060 M NaOH to reach the equivalence point. After the
1. 3 answers
2. 490 views
You place 1.234 g of solid Ca(OH)2 in 1.00 L of pure water at 25°C and it partially dissolves. The pH of the solution is 12.40.
1. 4 answers
2. 1,128 views
Assume you dissolve 0.240 g of the weak acid benzoic acid, C6H5CO2H, in enough water to make 1.16 102 mL of solution and then
1. 4 answers
2. 736 views
Two point charges are fixed on the y axis: a negative point charge q1 = -23 µC at y1 = +0.23 m and a positive point charge q2
1. 4 answers
2. 4,545 views
One of the 79.0 -long strings of an ordinary guitar is tuned to produce the note (frequency 245 ) when vibrating in its
1. 2 answers
2. 533 views
One of the 79.0 -long strings of an ordinary guitar is tuned to produce the note (frequency 245 ) when vibrating in its
1. 3 answers
2. 963 views
The Longhorns punted the ball from the 5-yard line. The punt was caught at the 41-yard line and returned to the 19-yard line.
1. 3 answers
2. 391 views
Identify 5 different materials that you encounter or use on a daily basis, and identify a mineral that is mined to supply each
1. 3 answers
2. 517 views
Using the formula for BMI:B = 703(w)/ h² When the weight is 100 lbs and the BMI is 20, how do I figure out the persons height?
1. 1 answer
2. 464 views
Janna is creating a multi-tiered cupcake display for a party. She plans on having 16 cupcakes on each tier.-There is a 1-inch
1. 2 answers
2. 878 views
The object distance for a convex lens is 15.0 cm, and the image distance is 5.0 cm. The height of the object is 9.0 cm. What is
1. 1 answer
2. 1,132 views
A cannonball is fired into the air with a speed of 42 m/s from a height of 28 m, with what speed does the cannonball hit the
1. 1 answer
2. 403 views
What are Single Quotes and when do you use them?
1. 1 answer
2. 334 views
1. What is the pH of a solution whose [H3O+] is 1 X 10^ -5 M?2. What is the [H3O+] concentration of a solution with a pH of 9?
1. 1 answer
2. 400 views
what are the rules used to determine the solubility of salt?
1. 6 answers
2. 1,030 views
Which of the following is true:-Relative dating tells us how long ago something existed -Disconformities are less common but
1. 1 answer
2. 397 views
I am doing a presentation on biomedical issues- abortion. My part is what issues involve problems with consent. Can you help
1. 1 answer
2. 361 views
A solution of .12 mol/L of phosphoric acid completely neutralizes .20L of a solution of sodium hydroxide with.a concentration of
1. 2 answers
2. 987 views
I have a few questions if someone could please help with them:Which of the following is true: A.Relative dating tells us how
1. 1 answer
2. 393 views
Write an addition problem in which, when the addends are rounded to the nearest ten, the sum is 90. Then explain how you use
1. 1 answer
2. 485 views
A model of a helicopter rotor has four blades, each 3.40 {m} in length from the central shaft to the tip of the blade. The model
1. 1 answer
2. 487 views
One of the parents in your school says, “I really enjoyed coming to Parents’ Night last week and seeing all the things the
1. 2 answers
2. 574 views
Calculate the final pressure on the addition of 2.0 g He(g) to a vessel of 10.0 L fixed volume already containing O2(g) at 25°C
1. 5 answers
2. 1,301 views
A spring with k = 54 N/cm is initially stretched 1 cm from its equilibrium length.(a) How much more energy is needed to further
1. 4 answers
2. 634 views
If y is directly proportional to x and inversely proportional to z^2, by what value is y multiplied if x is doubled and z is
1. 1 answer
2. 381 views
I need help on doing a powerpoint presentation about trichomoniasis
1. 3 answers
2. 312 views
I'm just courious what "ragweed mix" is/are. Is it one type of plant or a bunch?
1. 1 answer
2. 345 views
Is this sentence right?I have never had a pet before.
1. 1 answer
2. 346 views
I am writing a paragraph about why I want to participate in this school counsil thing and I was wobderi if the word choice for
1. 3 answers
2. 724 views
A spinner is divided into 8 equal sections. There are 3 yellow sections and 5 green sections. The spinner is spun 32 times.
1. 4 answers
2. 1,846 views
please help me solve my homework with all the work involved. i have trouble paying attention in class so it's hard for me to do
1. 4 answers
2. 1,029 views
An electrician cuts a 26ft piece of wire into two pieces. One piece is 4ft longer than the other. How long are the pieces? What
1. 2 answers
2. 621 views
If planet I is 31.8 million miles from the sun than planet II, then planet III is 25.6 million miles father from the sun than
1. 2 answers
2. 687 views
The sum of the measures of the angles of any triangle is 180 degrees. In triangle abc, angles a and b have the same measure,
1. 4 answers
2. 3,853 views
Write the ratio as a fraction in lowest terms. compare in inches. 3ft to 31 inches. The ratio is__.
1. 2 answers
2. 595 views
If 5 sweaters cost $39.40, how much would 8 sweaters cost? The cost is $__.
1. 1 answer
2. 266 views
The distance between city A and city B is 500 miles. On a certain wall map, this is represented by a length of 2.3 feet. On the
1. 10 answers
2. 5,743 views
How to write the ration as a fraction in lowest terms. Compare in hours. 22 hours to 3 days. The ratio is __.
1. 2 answers
2. 665 views
What are the step to help solve for5r+30/20= 3r-36/3
1. 1 answer
2. 284 views
Last few weeks of class and struggling to keep up to graduate, can somebody help me if they have done this before, also i used
1. 2 answers
2. 604 views
A motorist drives north for 40.0 minutes at 61.5 km/h and then stops for 15.0 minutes. He then continues north, traveling 130 km
1. 1 answer
2. 502 views
A tortoise can run with a speed of 0.13 m/s, and a hare can run 20 times as fast. In a race, they both start at the same time,
1. 2 answers
2. 986 views
The average person passes out at an acceleration of 7g (that is, seven times the gravitational acceleration on Earth). Suppose a
1. 1 answer
2. 657 views
A steam catapult launches a jet aircraft from the aircraft carrier John C. Stennis, giving it a speed of 205 mi/h in 3.00 s.(a)
1. 3 answers
2. 1,071 views
In 1865, Jules Verne proposed sending men to the Moon by firing a space capsule from a 220-m-long cannon with final speed of
1. 4 answers
2. 4,000 views
A ball is thrown vertically upward with a speed of 15.0 m/s.(a) How high does it rise? (b) How long does it take to reach its
1. 2 answers
2. 713 views
A baseball is hit so that it travels straight upward after being struck by the bat. A fan observes that it takes 3.20 s for the
1. 1 answer
2. 725 views
-8(t-3)-(t+1)=6
1. 2 answers
2. 525 views
Expression for the square of one more than a number
1. 1 answer
2. 326 views
A crate of mass m = 31 kg rides on the bed of a truck attached by a cord to the back of the cab as in the figure. The cord can
1. 4 answers
2. 1,261 views
A dockworker loading crates on a ship finds that a 22-kg crate, initially at rest on a horizontal surface, requires a 80-N
1. 1 answer
2. 500 views
What is the concentration of Cu2+ in a solution that is 0.10 M Cu(NH3)4^2+? (Kf = 1.2 x 10^12)The answer is 8.0 x 10^-4 How do I
1. 2 answers
2. 791 views
A certain weak base has a Kb of 9.00 × 10-7. What concentration of this base will produce a pH of 10.34?
1. 2 answers
2. 725 views
Complete and balance the molecular equation, including phases, for the reaction of aqueous ammonium bromide, NH4Br, and aqueous
1. 4 answers
2. 13,477 views
Shemrock Inc. is a brake pad manufacturing company. This company uses raw materials, such as carbon powder, iron, ash, and
1. 1 answer
2. 493 views
Running at a rate of 6 mi/h uses 704 Calories in an hour. Convert this value to (a) calories; (b) kilocalories; (c) joules; (d)
1. 4 answers
2. 1,716 views
lim (x^(2)-4)/(x-2)x->2 lim x->1 (x+1)/(x-1)
1. 2 answers
2. 620 views
Let f(x) = 1/(x+2) and g(x)= (x-1)/x.Simplify and state the domain. f(g(x)) g(f(x))
1. 1 answer
2. 311 views
a 9.85 g sample of an unknown metal M is burned in the presence of excess oxygen, producing the oxide M2O3 (s) and liberating
1. 2 answers
2. 602 views
While fishing, you get bored and start to swing a sinker weight around in a circle below you on a 0.31- piece of fishing line.
1. 1 answer
2. 641 views

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