# Posts by Maria

Total # Posts: 2,062

Algebra 2
solve each equation. check for extraneous solutions. sqrt(2x+1)+sqrt(2x+6)=5 please show work!!!!!

math
Gabe went to the amusement park with \$40 to spend. His ticket cost \$26.50. Write and solve an inequality to show how much he might spend on souvenirs and snack. Please tell me how you got this answer to this question.

math
a service of juice is 250 ml. how many servings are in a doze liters of juice?

math
Aaron has 5 pounds of flour. He needs 1/8 of a pound of flour to make a single cupcake. how many cupcakes can he make?

World History

Math
Netta faxed n pages from the library. The library charges \$1.50 per page. Later the same day, Netta faxed n more pages from a local copy shop. The copy shop charges \$1.25 per page plus a \$2 convenience fee. Write and simplify an expression for the amount Netta spent on faxes ...

Chemistry
qs, don't we need the concentration of what's left when we use the equation? Or are they the same thing with moles?

Chemistry
What will the pH be if 15 mL of 0.1 M HCl are added to the buffer obtained by mixing 70 mL of 0.5 M CH3NH2 and 30 mL of 1.0 M CH3NH3+Cl-? (Kb for CH3NH2 is: 5.2 x 10-4 ) I'm having a hard time figuring out what to do first. is the ICE table come in handy for this? Can you ...

math
Susan goes swimming every 4 days, Jackie goes every 6 days and Lisa goes every 10 days. how many days later will they go swimming together

science
What are some arguments against extending human life? Please describe at least one objection and one objection from your research and experience.

Math
Find the vertex: -1/4x^2+9/5x+2

Math
so b) will be g3 and c) will be d represents dollars per gallon and g represent gallons of gas? What else? Can you please check my answers, thank you very much.

Math
Mia buys 3 gallons of gas that costs d dollars per gallon. Bob buys g gallons of gas that costs \$3 per gallon. a) Write an expression for the amount Mia pays for the gas. b) Write an expression for the amount Bob pays for the gas. c) What do the numeral and the variable ...

what does franchiser and franchisee mean and what are their defintions

Bussiness
could you give me the definitions for these two and could tell me the disadvantages and the advantages -franchiser -franchisee

math
-1

ELEMEMTARY MATH
12 = √4 x √3 2. and because 4 is a square number it can be squared to 2 √12 = 2√3 3. and because 3 can't be square rooted you just leave it so your answer will be √12 = 2√3

Applied Chemistry Project Help!!!
Research and describe one current application of the knowledge of the atom. This application can be in any field of your choice. This means the field can be scientific, such as medicine, or nonscientific, such as entertainment. The purpose of this assignment is to learn the ...

physical science
For questions #14 – 16, write an equation for the reaction of magnesium oxide with sodium chloride to produce magnesium chloride and sodium oxide. 14. Show the formulas of the reactants. 15. Show the formulas of the products. 16. Write the balanced the equation for this ...

Finance
Fjord Luxury Liners has preferred shares outstanding that pay an annual dividend equal to \$7 per year. If the current price of Fjord preferred shares is \$94, what is the after-tax cost of preferred stock for Fjord?

math
A company rents its care for a daily fee, plus an additional charge per miles driven. Trip one is 4 days, 450 miles, and cost \$244.50 for the rental. Trip two is 3 days, 200 miles and cost 149.00 for the rental. Find the daily fee, and find the mileage charge. I don't know...

Math
a.30

GEOMETRY
THE area of circle B is 25 times greater than the area of circle A. The radius of circle A is 3. What is the radius of circle B?

statistics
Random sample of 17 HMO was selected. For each HMO the copy's for a doctors visit was recorded as 9,7,10,9,8,12,6,5,5,11,7,6,7,10,12,8,6 with s 95% confidence interval for the mean co payment

physics
A weightlifter has a basal metabolic rate of 64.6 W. As he is working out, his metabolic rate increases by about 650 W. (a) How many hours does it take him to work off a 450 Calorie bagel if he stays in bed all day? (b) How long does it take him if he's working out? (c) ...

College Physics
Thank you i tried doing it a million different ways but kept making a mistake somewhere i really appreciate it this truly helped me understand.

College Physics
A weightlifter has a basal metabolic rate of 64.6 W. As he is working out, his metabolic rate increases by about 650 W. (a) How many hours does it take him to work off a 450 Calorie bagel if he stays in bed all day? (b) How long does it take him if he's working out? (c) ...

College Physics
(a) How many hours does it take him to work off a 450 Calorie bagel if he stays in bed all day? (b) How long does it take him if he's working out? 2 h (c) Calculate the amount of mechanical work necessary to lift a 126 kg barbell 2.10 m. 3 J (d) He drops the barbell to the...

physics
an ice skater applies a horizontal force to a 20 kg block on frictionless, level ice causing the block to accelerate uniformly at 1.4 m/s^2 to the right. after the skater stops pushing the block it slides onto a region of ice that is covered with a thin layer of sand. the ...

math
9i / -3+8i

Physics
A sample contains 3.5×1019 radioactive atoms with a half life of 10000 years. How many atoms are expected to decay in the first second? After waiting 10000 years, how many atoms are expected to decay in the next second?

math
Find all zeros. Real and Imaginary f(x)= 5x^4 + 16x^2 + 3

math
find the inverse. f(x)=√3+4

math
Find the inverse f(x)= -2+7

math
(2+3i) / (4-2i)

math
Find the inverse of f(x) f(x)=3-1/2x

college algebra
Find Functions with Given Zeros √2, -√2, 3

College Algebra

Math
The percentage of people not covered by health care insurance in 2003 was 15.6% (Statistical Abstract of the United States, 2006). A congressional committee has been charged with conducting a sample survey to obtain more current information. a. What sample size would you ...

calculus
The Voltage v , Current I and Resistance R are related by the equation V=IR. Suppose that V is increasing at a rate of 2 volt/sec, while I is decreasing of the rate of 1/5 (amp/sec ). Let t denote time in seconds. Find the rate at which R is changing when V=40volts and 1=2 amp .

calculus
The Voltage v , Current I and Resistance R are related by the equation V=IR. Suppose that V is increasing at a rate of 2 volt/sec, while I is decreasing of the rate of 1/5 (amp/sec ). Let t denote time in seconds. Find the rate at which R is changing when V=40volts and 1=2 amp .

Global terrorism
What effect has the 1991 gulf war had on current day terrorism ?

Chemistry
The ionic compund sometimes called yellow uranium is used to produce colored glazes for ceramics. It is 7.252% sodium, 75.084% uranium, and 17.664% oxygen a. What is the empirical formula for this compound? b. This compound has a molecular mass of 1268.06 g/mol, what is the ...

chemistry
The ionic compund sometimes called yellow uranium is used to produce colored glazes for ceramics. It is 7.252% sodium, 75.084% uranium, 17.664% oxygen? a. What is the empirical formula for this compound? b. This compound has a molecular mass of 1268.06 g/mol, what is the ...

english help repost
The Trouble with Television by Robert Mac Neil It is difficult to escape the influence of television. If you fit the statistical averages, by the age of 20 you will have been exposed to at least 20,000 hours of television. You can add 10,000 hours for each decade you have ...

accounting 1
Ethic Case The Controller for Anderson Electric, Ron Foss, is reviewing the year-end adjusting entries prepared by the accounting staff for approval before they are posted to the general ledger. Angela Bennett, the company president, has suggested the December accrual for wage...

Math
I don't understand what the answer is

Math
10

How do values and belief shape who characters are as individuals and influence their behavior? Our values and belief are strongly related and influence our behavior. It can bring to mind by certain communications or experiences. Our values therefore not only change at ...

English ... thinking question!!
How does viewing human behavior as good or evil shape a(n) individual’s/ society’s view of the world? Can you give me some thoughts about this question ? I have no idea!!! please help! Thank you so much

geometry
Quadrilateral Math has been dissected into squares. The area of the red square is 64 square units and the area of the blue square is 81 square units. Determine the dimensions and the area of Quadrilateral Math?

Chemistry
Calculate the value (calories) for the heat of solution. Mass of NaOH: 2.03 g ΔT for reaction A : 8 °C

accounting
I=prt I=9800*.02*15=\$2,940

Pre Algebra
jnjnjnjnj

math
24.01

physics
An object slides on a level surface in the +x direction. It slows and comes to a stop with a constant acceleration of -2.45 m/s2. What is the coefficient of kinetic friction between the object and the floor? (please include explanation)

Geometry
The length of a table is 6 feet on a scale drawing the, length is 2 inches write three possible scales for drawing

Geometry
a game room has a floor that is 120 feet by 75 feet a scale drawing of the floor grid paper uses a scale of 1 unit:5 feet what are the dimensions o the scale drawing

geometry
a game room has a floor that is 120 feet by 75 feet a scale drawing of the floor grid paper uses a scale of 1 unit:5 feet what are the dimensions o the scale drawing ***Show steps please I need this by tomorrow***

Math
97 was my first answer as well.

Language Arts

Science
0.003mm

Science
Thank you

Science
a reasonable estimate for the size of a cell's nucleus is a. 0.003 b. 3 mm c. 0.003m d. 3m

calculus
ya i just didn't get the second part because its volume not the surface area and i got a big number I'm not sure about it

Sociel Studies
Hello, Thank you, so I was on the right track?

Sociel Studies
Hello, I keep coming the answer of sovereign immunity but I am unsure. I am trying to write a paper and here is the question: Why a government leader, politician, or special interest group invoke sovereignty?

Calculus
Use differentials to determine by approximately what percentage does the perimeter of a square table increase if its diagonal is increased from 30 centimetres to 31.245 centimetres

Physics
The potential difference between the plates of a capacitor is 335 V. Midway between the plates, a proton and an electron are released. The electron is released from rest. The proton is projected perpendicularly toward the negative plate with an initial speed. The proton ...

Chemistry
What is the wavelength of a photon having a frequency of 71.6 THz? So I know 1 THz = 10 to the power of 15 Hz And c= 3 x 10 to the 8th and h= 6.63 x 10 to the -34th

Math
On an airplane,there are two seats on the left side in each row and three seats on the right side. There are 90 seats on the right side of the plane. a. How many seats are on the left side of the plane? b. How many seats are there altogether?

Math
5/8 of the 64 musicians in a music contest are guitarists. Some of the guitarists play jazz solos, and the rest play classical solos. The ratio of the number of guitarists playing jazz solos to the total number of guitarists in the contest is 1:4. How many guitarists play ...

Electron transition
The electron in a hydrogen atom in level n= 8 undergoes a transition to a lower leve by emitting a photon of wavelength 956 mom. What is the final level of the electron? A) 4 B) 8 C) 9 D) 1 E) 3

math
0,0987

12. Explain it what do you need to do to extend a number pattern?

Fraction
3/4 x 12= 9 eggs

Math
the temperature dropped 18 degrees F between 6 am and 6 pm. during the night the temperature fell another 8 degree F. at 6 am the temperature started rising. It rose 1degree F the first hour, 2 degree F the second hour, and 4 degree the third hour. The temperature rose another...

Math
the temperature dropped 18 degrees F between 6 am and 6 pm. during the night the temperature fell another 8 degree F. at 6 am the temperature started rising. It rose 1degree F the first hour, 2 degree F the second hour, and 4 degree the third hour. The temperature rose another...

ps 84
rewite you can bake a potato with the rays of the sun on a very hot day as an imperative sentence

Maths
a litre of orange fruit drink contains 22%orange juice.how many millilitres of orange juice must be added to produce a mixture containing 50% orange juice?

Physics
A quarterback is trying to throw a football to a stationary receiver. The receiver is not directly in front of him, so the total velocity of the ball and the velocity of the quarterback has to be 20 m/s at an angle of 21.4 degrees from the vertical direction as shown in the ...

Chem
Ohhhh Ok thank you sooo much :) makes more sense Thank you again

Chem
I am a little confused ... the previous questions were What is the concentration in W/V units? (23g/250ml)x100 = 9.2% w/v How many moles of NaCi were dissolved? (23g/1) x (1mol/58.54g)+ .39moles Then it was How many atoms were dissolved? and this is zero because there are no ...

Chem
I have a concentration of saltwater (NaCI) in that there was 23 g of salt dissolved in .025 L of water. How many atoms were dissolved? Is this how you set it up??? .39 x(6.022x10^23)

chemistry
Thank you :)

chemistry
I have 3 grams of CaCI2 and dissolve this into 0.5 L water. What is the concentration in g/dl (grams/deciliter)? I take 10 milliliters of this solution and add it to 990 milliliters of watet fo a total of 1000 milliliters. What is the concentration of this new dilution in ...

Math
helen purchased three books and received a 20% discount. She will pay \$10 for shipping. Write an expression that can be used to represent the total amount paid for the three books and the shipping cost.

chemistry
calculate the molality, molarity, and mole fraction of NH3 in an 12.80 mass % aqueous solution (d=0.9651 g/ml)

Art
Hopefully you got a ps4 and a bb gun, i have a ps4.

geometry
what is the perimeter of a 12 * 15 pool with a 3ft non slip surface around it

math
y= tan((pi x)/2) what is the domain of y? My ans. is x= 1/2+k ;k is Z Is it correct Please help!!!

math
12,24,72,288 what is next

CHEMISTRY
A mixture of methane and helium is placed in a 2.0 l flask at 27 degrees the partial pressure of methane is 0.72 ATM and the partial pressure of helium is 0.22 ATM . What is the mole fraction of ch4?

Math 221
Joe rented a truck for one day. There was a base fee of \$15.99 , and there was an additional charge of 97 cents for each mile driven. Joe had to pay \$295.35 when he returned the truck. For how many miles did he drive the truck?

Math 221
In Cowling's Rule If a doctor prescribes 75 milligrams of tamiflu for an adult, then how many milligrams would she prescribe for a six-year-old child using Cowling's rule?

Math 221
If a doctor uses Cowling's rule to prescribe 187 milligrams of Tamiflu to a child when she would prescribe 500 milligrams to an adult, then how old is the child?