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Given that: 4x – y + 9 = 0 and 3y – 2x = 7, solve for x.does x=-2?
1. 2 answers
2. 421 views
Two planes leave New Orleans at the same time. Plane A heads north and Plane B heads south. After 4 hours and 15 minutes, the
1. 1 answer
2. 834 views
Determine the freezing point of an aqueous solution containing 10.50 g of magnesium bromide in 200.0 g of water.?
1. 0 answers
2. 481 views
How many grams of table sugar (C12H22O11) will be needed to make 3.5 L of a 11.5 M solution?
1. 1 answer
2. 1,089 views
Calculate the sodium ion concentration when 50.0 mL of 2.0 M sodium carbonate is added to 100.0 mL of 3.0 M sodium bicarbonate.
1. 1 answer
2. 840 views
You are considering two mutual funds for your investment. The possible returns for the funds are dependent on the state of the
1. 0 answers
2. 640 views
The functionf(x) = cx/2x+3 satisfies f(f(x))=x for all real numbers x\= -3/2. Find c.
1. 1 answer
2. 1,483 views
A rectangle has an area of 400 cm^2. If the rectangle is a square, what is its perimeter?
1. 1 answer
2. 830 views
Suppose you have a cache of radium, which has a half-life of approximately 1590 years. How long would you have to wait for 1/5
1. 1 answer
2. 2,968 views
Use algebra tiles to determine if 2(x +3) is equivalent to 2x +3. Explain your answer thanks
1. 2 answers
2. 736 views
Lisa evaluated the expressions 2x and x squared for x=2 and found that both expressions were equal to 4. Lisa concluded that 2x
1. 1 answer
2. 942 views
A boat is going 30 mph. It's direction is 100 degrees east of north. The water current is 15 mph and has a direction of 22
1. 1 answer
2. 486 views
A boat is going 30 mph with a direction of 100 degrees east of north. The water current is 15 mph with a direction of 22 mph.
1. 1 answer
2. 681 views
The town of Rayburn received 6 more inches of snow than the town of Greenville. Let g represent the amount of snow in
1. 4 answers
2. 863 views
Jill, Meg and Beth are sisters. Jill is 2 years younger than Meg. Beth is half as old as Meg. Let m represent Meg'a age. Write 2
1. 1 answer
2. 764 views
Find a if the point (3,a) is on the line that passes through (-2,7) and (5,-3).
1. 1 answer
2. 409 views
If a solution contains 0.65mol of OH−, how many moles of H+ would be required to reach the equivalence point in a titration?
1. 1 answer
2. 933 views
A puck of mass 0.165 kg, initially resting on ice, is hit by a stick to gain a speed of 32.0 m/s and then slides 25.0 m to lose
1. 1 answer
2. 746 views
Order for 620 dresses from China, cost is $40 a gown, markup based on selling is 76%, what is the selling price of each gown?
1. 3 answers
2. 795 views
A rifle with a muzzle velocity of 480 m/s shoots a bullet at a target 45.6 m away. How high above the target must the rifle
1. 1 answer
2. 882 views
glycine and lysine, have the following values of the relevant acid dissociation constants (pKa)glycine, pKa=2.35
1. 6 answers
2. 1,316 views
Determine the potential (V) by which a proton must be accelerated so as to assume a particle wavelength of 0.0293 nm.---- This
1. 6 answers
2. 798 views
Calculate the wavelength (in m) of a photon capable of exciting an electron in Li2+ from the state n= 3 to the state n=5
1. 1 answer
2. 475 views
a) Calculate the number of moles of nitrogen dioxide, NO2, that could be prepared from 79.0 mol of nitrogen oxide and 82.0 mol
1. 2 answers
2. 1,852 views
A compound of chlorine and fluorine, ClFn, reacts at about 75oC with uranium metal to produce uranium hexafluoride, UF6 and
1. 1 answer
2. 1,872 views
Nina walked 15 yards to Paul's house. They then went hiking. Which rule shows how many yards Nina walks for every yard Paul
1. 0 answers
2. 422 views
7. Paula is an office manager for ABC Advertising. She has been tasked with finding a copy machine that falls within a budget of
1. 1 answer
2. 645 views
1. A firm pays $1.75 for each copy of a magazine and sells each one for $2.50. There is a fixed monthly cost of $40 for printing
1. 2 answers
2. 499 views
Find the area bounded by {y=x2−4y=4−x2 • sketch the region described • determine any intersection point(s) for the
1. 1 answer
2. 721 views
A researcher surveyed college students to study their opinion about the proposed change in smoking rules. The researcher asked a
1. 0 answers
2. 628 views
Maryann rolls a 6-sided dice six times. How many ways can she roll the dice so that the sum of her numbers is 10?
1. 2 answers
2. 524 views
What will $30,000 earn after 6 yrs at 2.25%?
1. 1 answer
2. 320 views
A physics teacher (mass = 84.5 kg) is jogging through the woods and runs straight into a large oak tree at 3.5 m/s. Rebound
1. 0 answers
2. 691 views
The product of the first five terms of a geometric progression is 32. If the fourth term is 17, compute the second term.
1. 1 answer
2. 747 views
The product of the first five terms of a geometric progression is 32. If the fourth term is 17, compute the second term.
1. 1 answer
2. 1,413 views
Andrew got 68 for both English and Maths. The mean for english was 52 and the mean for Maths was 55. The standard deviations
1. 1 answer
2. 444 views
what is arccot 3.107 equals to in rad?
1. 1 answer
2. 374 views
A line has a slope of 2 and contains the points (1, 3) and (2, y). The value of y is what?Please explain in detail
1. 1 answer
2. 500 views
Picture given with problem: media.glynlyon(dot)com/g_geo_2012/12/img_geou12abc_8.gifIf AC = 20, AE = 25, and AB = 5, what is the
1. 1 answer
2. 395 views
Compute the square footage of carpet needed to cover a room 12' 3" x 18' 4".
1. 2 answers
2. 1,522 views
A cyclopropane-oxygen mixture is used as an anesthetic. If the partial pressure of cyclopropane in the mixture is 334 mmHg and
1. 1 answer
2. 761 views
A balloon at a pressure of 755 torr and a volume of 5.00 L was allowed to rise in the atmosphere to a point at which the
1. 3 answers
2. 1,206 views
Jean surveyed 25% of all eighth graders and 75% of all 7th graders. John surveyed 50% of all eighth graders and 50% of all 7th
1. 1 answer
2. 547 views
what is the equation for the perpendicular bisector of the line segment whose endpoints are (-7,2) (-1,-6)
1. 2 answers
2. 1,672 views
what is the equation for the perpendicular bisector of the line segment whose endpoints are (-7,2) (-1,-6)
1. 2 answers
2. 2,810 views
what is the equation for the perpendicular bisector of the line segment whose endpoints are (-7,2) (-1,-6)
1. 2 answers
2. 1,409 views
You borrow $2,600 and repay the loan in 12 monthly installments of $232.What was the finance charge per $100 of the amount
1. 1 answer
2. 1,038 views
Finance charge of $2.50 per $100 for 3 payments.
1. 1 answer
2. 787 views
Find the finance charge per $100 on a loan of $12,600 with a finance charge of $1,638.
1. 1 answer
2. 682 views
Using the molar volume (STP) or the ideal gas law equation, determine the molar mass,g/mole, of each of the following.A: 11.2g
1. 1 answer
2. 814 views
A 14.0 g sample of Krypton has a temperature of 25C at 625mm Hg. What is the volume, in Milliliters, of the krypton?
1. 1 answer
2. 594 views
I'm supposed to find the limit as x approaches infinity of (2-x-sinx)/(x+cosx). I've thought about using the squeeze theorem,
1. 2 answers
2. 465 views
How much must you deposit in an accountthat pays 6% semi-annual interest, compounded annually, to have a balance of $9000 in 15
1. 4 answers
2. 446 views
How much must you deposit in an accountthat pays 6% semi-annual interest, compounded annually, to have a balance of $9000 in 15
1. 1 answer
2. 489 views
What is the verb in "where are my shoes"
1. 1 answer
2. 388 views
can someone explain this statement pleaseint a=(int *)new int[4][3];
1. 0 answers
2. 368 views
A buyer is paying a reduced $500 in closing costs on a home with a sale price of $95,000 in the state of Bath, Maine. If the
1. 1 answer
2. 438 views
A person exerts a horizontal force of F = 174 N in the test apparatus shown in the drawing. (h = 0.33 m.) Find the horizontal
1. 0 answers
2. 875 views
29 * 6^(-3x) = 13Thanks!
1. 1 answer
2. 245 views
A CD has a mass of 17.4 g and a radius of 6.01 cm. When inserted into a player, the CD starts from rest and accelerates to an
1. 1 answer
2. 1,243 views
A CD has a mass of 17.4 g and a radius of 6.01 cm. When inserted into a player, the CD starts from rest and accelerates to an
1. 0 answers
2. 457 views
A pulsar is a rapidly rotating neutron star that continuously emits a beam of radio waves in a searchlight manner. Each time the
1. 1 answer
2. 2,117 views
Assistant dean Shirin Ahmadi recommended offering more language courses.We went to the mark taper forum to see a production of
1. 2 answers
2. 680 views
Jack Shellenkamp owns and manages a computer repair service, which had the following trial balance on December 31, 2011 (the end
1. 1 answer
2. 2,123 views
Calculate the volume of .300 M NaOH needed to prepare a pH=3.50 buffer with 250ml of .075M HF solution. pKa (HF) = 3.15
1. 1 answer
2. 606 views
Waves on a particular string travel with a speed of 17 m/s. By what factor should the tension in this string be changed to
1. 1 answer
2. 1,028 views
How many cans ( each containing 14.0 oz of propane) would be required to convert 41.7 lbs of ice at -15.0 C to water at 100 C (
1. 0 answers
2. 315 views
The tires on a car have radius 14 inches. Find the angular speed of the car tire inrevolutions per second when it is traveling
1. 1 answer
2. 1,988 views
A 1000 kg car is moving at a constant speed of 7 m/s when it hits the back bumper of another car with 1200 kg of mass moving in
1. 3 answers
2. 662 views
Supply is Demand isScenario A elastic elastic Scenario B elastic inelastic Scenario C inelastic elastic Scenario D inelastic
1. 0 answers
2. 812 views
Sandra purchases 5 pounds of coffee and 10 gallons of milk per month when the price of coffee is $10 per pound. She purchases 6
1. 2 answers
2. 2,790 views
Which of the following would not interfere with market equilibria?A. a minimum wage B. a rent control C. a non-binding price
1. 1 answer
2. 705 views
The price received by sellers in a market will decrease if the governmentAnswer A. imposes a binding price floor in that market.
1. 1 answer
2. 3,160 views
Suppose the government has imposed a price floor on the market for soybeans. Which of the following events could transform the
1. 0 answers
2. 1,144 views
The perimeter of a triangle is 50.What steps do I need to take to find the length of the sides?
1. 1 answer
2. 338 views
julia needs to purchase a ladder that just reaches the top of a 16 foot building. if the bottom of the ladder will be placed 12
1. 2 answers
2. 516 views
PLease help 5 + 4 x 3 - 1 = 18use grouping symbols to make each equation true.
1. 7 answers
2. 650 views
Tickets to a game are $5 for adults and $2 for children. Six hundred tickets are sold for a total of $2160. How many adult
1. 2 answers
2. 851 views
Starting with a 2.0 M NaOH solution, determine how you would prepare 1 L of a 0.1 M NaOH solution.
1. 2 answers
2. 770 views
A uniform disk of mass 2kg and radius 10.0cm is spinning on a fixed frictionless bearing at 3 revolutions/second. A think
1. 0 answers
2. 563 views
What happens to the rate of the reaction when the concentrations of the reactants and products are changed in this equilibrium:
1. 0 answers
2. 661 views
What factors affect the equilibrium constant for the reaction N2O4(g) + heat NO2(g)?
1. 0 answers
2. 685 views
Functional groups1. are the repeating unit of polymers. 2. are groups of atoms whose chemical prop- erties are pretty much
1. 4 answers
2. 508 views
Use Gauss-Jordan to solve3x + 2y = -4 4x – 2y = -10
1. 0 answers
2. 474 views
How do you figure out hydrate formulas?
1. 1 answer
2. 316 views
Write a complete C# program that displays a menu comprising of the followings:Main Menu 1) Calculate Fuel Consumption 2)
1. 0 answers
2. 648 views
Write a complete C# program that displays a menu comprising of the followings:Main Menu 1) Calculate Fuel Consumption 2)
1. 1 answer
2. 741 views
Aluminum metal is used in many products. It quickly reacts with oxygen in the reaction 4Al (s) + 3O2 (g)--> 2Al2O3 (s). Which
1. 1 answer
2. 612 views
In the system shown in the figure , block A has mass m_A = 2.08 kg, block B has mass m_B = 0.370 kg, and the rope connecting
1. 1 answer
2. 923 views
Triangle ABC, AB=8, BC=10, and AC=12, M is the midpoint of AB, and N is the midpoint of BC. What is the length of MN?
1. 3 answers
2. 3,413 views
What is a way to put alloy and concentration into a sentence that helps to explain solutions?
1. 1 answer
2. 561 views
What is a way to put alloy and concentration into a sentence that helps to explain solutions?
1. 2 answers
2. 593 views
The machine earns the company revenue at a continuous rate of 62000 t + 38000 dollars per year during the first six months of
1. 0 answers
2. 658 views
When the three blocks in the figure below are released from rest, they accelerate with a magnitude of 0.370 m/s2. Block 1 has
1. 0 answers
2. 1,230 views
The figure below shows an initially stationary block of mass m on a floor. A force of magnitude F = 0.570·mg is then applied at
1. 0 answers
2. 978 views
Block B in the figure below weighs 713 N. The coefficient of static friction between block and table is 0.20. Assume that the
1. 5 answers
2. 837 views
Andy (mass 80 kg) uses a 3.0 m long rope to pull Bob (mass 60kg) across the floor (uk= .2) at a constant speed of 1.0 m/s. Bob
1. 1 answer
2. 908 views
What is the pattern for 3, 19, 99, 499, 2499
1. 4 answers
2. 1,052 views
How do I calcualte these conversions?8.4cm = m 1333.8g=kg 119cm=mm 2391mL=L 3.22Mm=km 4.68fs=ps 8.86*10^11=Gm
1. 1 answer
2. 1,001 views
How do I find 2 tan squared time x = sec times x -1
1. 0 answers
2. 746 views

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