# math/209

131,153 results

**math**

What is the value of t in the equation below? (7^-64)x(7^-150)/(7^-7)x(7^2)=7^t Help please i get lost when its a huge problem like this but if it's short i can solve it. (7^-64)x(7^-150)/(7^-7)x(7^2) = 7^(-64-150+7-2) = 7^-209 so, t = -209 answer is= 209 and its wrong i don't...

**chemistry**

If 15.0 grams of C3H6, 10.0 grams of oxygen, and 5.00 grams of NH3 are reacted, what mass of acrylonitrile can be produced assuming 100% yield, what mass of the excess reactants remain? 15g C3H6 (1 mol / 42.08 g) = .35 mol C3H6 .36 mol C3H6 ( 2 mol C3H3N / 2 mol C3H6) = .36 ...

**Physics**

Question: The amount of internal energy needed to raise the temperature of .25 kg of water by 0.2 degrees Celsius is 209.3 J. How fast must a 0.25 kg baseball travel in order for its kinetic energy to equal this internal energy? KE = (.5)(m)(v^2) 209.3 J = (.5)(.25kg)(v^2) ...

**Math 209**

solve, 3x^2 + 6x - 105

**Math 209**

f(x) = x3 + 2x2 – 0.4X – 1 how do you you factor this?

**Math 209**

f(x) = x3 + 2x2 – 0.4X – 1 how do you you factor this?

**math 209**

.78=2(3.14)*sqrt.5/g solve for g

**college math 209**

solve for y, 5y^-13y=6

**college math 209**

find the values for x and y 4x - 9= -15 -3x - 4y = 22

**math please check**

(19-3)*(11-2)+8 squared=209

**Math 209-College Mathematics II**

How do you factor this completely: x^3 + ax + 3a + 3x^2

**college math 209**

solve for u, where u is a real number ãu - 18 = 2

**college math 209**

solve the equation (x+4)^2=2x^+19x+46

**college math 209**

simplify the following expression -(x) + 4 (4 v + 2x)

**math**

solve the system 7x^2 - 5y^2 + 20y = 3 21x^2 + 5y^2 =209

**math 209**

find the value of annuity for a 1=$3000, I=0.09, n= 25

**math**

If the sum of n terms of the series 4+7+10+... is 209, find n

**information literacy**

Which of the following sets of call numbers is in the correct order? A. CR 209 .D97 1991 CA203 .P39 1992 CL207 .K256 1976 C201 .G37 1910 B. CA203 .P39 1992 CL207 .K256 1976 CR 209 .D97 1991 C201 .G37 1910 C. C201 .G37 1910 CR 209 .D97 1991 CL207 .K256 1976 CA203 .P39 1992 D. ...

**math**

2 forms of writing this number. 3,209,003,812?

**Math/209**

How do I find the set of all points of y=-8 on a graph?

**math**

how do you write 3,209,003,812 in standard form

**college math 209**

use the quadratic formula to solve for x, 3x^2 + x -8=0

**math**

Round 209,999.598 to the nearest hundredths

**5th Grade Math**

How do you write 6,549,920 and 945,209? Thanks

**college math 209**

simplify as much as possible y^2ã48yv^2 - vã12 y^5

**Further math**

If the sum of the first n terms of the series 4 + 7 + 10 + ... is 209, find n.

**math**

I have 209.2 cups of cupcake batter in a bowl. If each cupcake uses 4 cups of batter, how many cupcakes can be made? How many times bigger do the divisor and dividend need to be in order to solve this problem? I divided 209.2 by 4 and got an answer of 52.3 cupcakes. I just do ...

**college math 209**

write in simplified radical form by rationalizing the denominator 2ã5 + 3/ã5 - 1

**college math 209**

solve for y, 5y^2-13y=6 I did forget the exponent the first time..

**math 209**

which of the following conclusions is true about the statement below? x^2= square root x

**Mth/209**

x/3 = 4/ x + 1

**algebra math 209**

evaluating polynomials negative 12sq times 3s -12sq *3s

**college math 209**

simplify as much as possible y^2sqrt 48yv^2 - vsqrt 12 y^5

**Physical Science**

1. Which equation correctly shows beta decay? (A) 210/82 Pb -> 209/81 Tl + 0/-1 e + y (B) 210/82 Pb -> 209/83 Bi + 0/-1 e + y (C) 210/82 Pb -> 210/83 Tl + 0/-1 e + y (D) 210/82 Pb -> 210/83 Bi + y (E) 210/82 Pb -> 210/83 Bi + 0/-1 e + y 2. The half-life if radon...

**electricity and electronics**

a transformer has a primany voltage of 115 v and secondary voltage of 24 v if the number of tures in the primany is 345 how many turns are in the secondary The voltage ratio Vsecondary/Vprimary = 24/115 = 0.209 This equals the turns ratio Nsecondary/Nprimary = Nsecondary/345...

**college 209**

multiply (2ã7-5ã3)(8ã7-5ã3)

**Math**

155,168,170,193,198,209,229,270,324,347 1.median 2.maximum 3.minimum 4.mean 5.mode 6.range

**Chemistry**

What NaCl concentration results when 209 mL of an 0.660 M NaCl solution is mixed with 492 mL of a 0.270 M NaCl solution? __ mol/.209 L = 0.660 M __ mol/.492 L = 0.270 M .. I have no idea how to solve this. I have no idea why I even set up the equation above when it's asking me...

**Math 209**

THE FEDERAL DEBT D IN TRILLIONS OF DOLLARS HELD BY FOREIGN AND INTERNATIONAL INVESTORS x YEARS AFTER 1970 CAN BE MODELED BY D(x) = WHERE 15 ≤x≤ 40.

**algebra math 209**

swimming space. The length of a rectangular swimmung pool is 2x-1 meters, and the width is x+2 meters. write a polynomial A(x) that represent the area. Find A(10)

**math 209**

the time t for a pendulum to swing back and forth once is called its period and is given by t=2pi*sqrt l/g where l equals the length of the pendulum solve for g

**Finance**

Your hospital has been approached by a major health maintenance organization (HMO) to perform all their diagnosis related group (DRG) 209 cases (major joint reattachment procedures). They have offered a flat price of $10,000 per case. You have reviewed your charges for DRG 209...

**math 209**

machine produces 192 bolts in 20 minutes. At the same rate, how many bolts would be produced in 50 minutes? thank you

**math**

GCD (24,20) IS 4. sINCE gcd(4,12 ) is 4 then GCD (24,2012 IS 4 USE Euclidem LGERITHM TO FIND THE gcd 722, 2413,209

**Math 209**

The width of a rectangular carpet is 7 meters shorter than the length, and the diagonal is 1 meter longer than the length. What are the carpet's dimensions?

**algebra 209**

write the following in simplified radical form 3 sqrt 250

**math 209**

Swimming space. The length of a rectangular swimming pool is 2x 1 meters, and the width is x 2 meters. Write a polynomial A(x) that represents the area. Find A(5).

**math 156**

Stock in a company is selling for $11 3/4 per share. if some one purchases $893 worth stock in this company, how many shares did they get? is it 209

**Math 209**

If C dollars are deposited in an account paying r percent annual interest, approximate the amount in the account after x years if C=$150, r= 1.9% and x=25 years

**Math**

Given: ________, – 243, – 226, – 209, – 192, – 175, … The 67th term of the sequence is __________. The series of the first 27 terms of the sequence is __________.

**Chemistry**

The solubility of calcium sulfate at 30 degrees C is .209 g/100mL solution. calculate its Ksp.

**PLG 209**

Summarize the Bill of Rights (and Amendments 13-15). Discuss why they apply to criminal law

**math!**

GCD (24,20)IS 4. sINCE gcd (4,12) IS 4, THEN gcd (24,20,12) is 4. use this approach and the euclidean algorithim to find the GCD ( 722, 2413,209) WHAT IS THE gcd?

**basic math**

Identify the rate, base, and amount in the following applications. Do not solve the applications at this point. 22% of Shirley’s monthly salary is deducted for withholding. If those deductions total $209, what is her salary?

**biology**

How can an understanding of the "mortality factor" lead to a successful biological control of pests in agriculture & horticulture? Check these sites. http://72.14.209.104/search?q=cache:taS99s4LDW0J:cals.arizona.edu/crop/cotton/insects/wf/horticultura0204.html+mortality+factor...

**mth 209**

what formula do i use to figure our the usage (in million)of the drug claritin. From the year 2008-2011

**Pre-Calculus**

A local salesman receives a base salary of 675 monthly. He Also receives a commission of 11% on all sales over 1900. How Much would he have to sell in a month if he needed to have a monthly income of 3000? My Work: 1900*.11=209 3000-675=2325 2325/209=11.12440191 1900*11....

**Math**

Can someone explain this problem to me, I cannot figure out how they came up with the answer. The example in my book does not work with this problem. Find the minor for the element in the 1strow and 2ndcolumn. -3 2 -1 19 13 -18 -19 12 7 correct answer is: -209 The numbers I ...

**Math**

A model of an airplane is 11 inches in length. The actual length of the airplane is 209 feet. What is the scale used to build the model? Please Help Me!!!

**MATH**

A model airplane is 11 inches in length. The actual length of the airplane is 209 feet. what is the scale used to build the model?

**math 209**

The perimeter of a rectangle is 44ft the length is 4ft longer than the width. Find the demensions. Write a system of linear equations and solve the resulting system. Let x be the length and y be the width.

**mummification**

what was the substance used to stuff nostrils? The ancient Egyptians stuffed the nostrils with resin or wax. http://209.85.165.104/search?q=cache:3ghP1ChFOJYJ:www.touregypt.net/featurestories/mummification.htm+mummification+nostrils+resin&hl=en&gl=us&ct=clnk&cd=1&ie=UTF-8

**chemistry**

Calculate Ke for the following(equilibrium concentrations given below substances) NH4SH(g) yields NH3(g) + H2S(g) + heat [.027] [.0234] [.209] Thank you!

**Math**

You shop for bikes and find 7 types priced at 119 139 149 179 189 199 and 209. you want to buy the 189 bike would you use the mean median and mode to convince your parents that this is a reasonable price for a bike? explain Please help me

**chemistry**

bismuth of 209/83Bi is stable because? nuclei even or odd # of nucleons. which one is stable?

**unit rates**

Problem 1. 209 km. in 5 hours Problem 2. A soccer player scored 41 goals in 84 games

**Algebra**

Solve the system of equations by substitution. Your answer should be given as an ordered pair like this (x, y). Round your answers to the nearest tenth. y=-2+7x 10x-7y=209

**Math 209**

If a cylindrical container has a volume of cubic feet, then its surface area S in square feet (excluding the top and bottom) is given by S = s=(2π )/r where r is the radius of the cylinder. (a) Calculate S when r =1/2 foot (b) What happens to this surface area when r ...

**chemistry**

how many grams of CO are needed to react with an excess of Fe2O3 to produce 209.7gFe? Fe2O3(s) + 3CO(g) => 3CO2(g) + 2Fe(s)

**Algebra 209**

the perimeter of rectangle back yard is 6x+6 yards if the width is x yards find a binominal that represents the length.

**chemistry**

how many grams of CO are needed to react with an excess of Fe2O3 to produce 209.7gFe? Fe2O3(s) + 3CO(g) => 3CO2(g) + 2Fe(s)

**Chemistry**

How many grams of CO are needed to react with an excess of Fe2O3 to produce 209.7gFe? Fe2O3(s) + 3CO(g) => 3CO2(g) + 2Fe(s)

**Chemistry**

The solubility of calcium sulfate at 30 degrees C is .209 g/100mL solution. Calculate its Ksp i calculated it and got 1.5 x 10 ^-2 but the program said that it was wrong if you could help explain how to do it i would appreciate it

**Chemistry**

The solubility of calcium sulfate at 30 degrees C is .209 g/100mL solution. Calculate its Ksp i calculated it and got 1.5 x 10 ^-2 but the program said that it was wrong if you could help explain how to do it i would appreciate it

**Algebra**

Given ________, – 243, – 226, – 209, – 192, – 175, … a. What is the 67th term of the sequence b. What is the series of the first 27 terms of the sequence

**math/209**

Mike would like to enlarge his rectangular front yard which is currently 80 feet by 40 feet. He can only extend the width and length by 5x feet. If x = 7 feet, what will be the increase in area of the front yard? How can this problem be raised to a higher level of complexity

**math 209**

Area of a sail. The area in square meters for a triangle is given by A(x)=x^2 +5x +6. a.) Find A(5) b) if the height of the sail is x+3 meters, then what is the length of the base of the sail when area is x^2 +5x+6m^2?

**Math 209**

An advertisement for LED HDTVs lists the following prices for their different sizes (all have the same aspect ratio 9:16): 22-inch $ 247.99 42-inch $ 1,299.99 46-inch $ 1,449.99 52-inch $ 1,799.99 55-inch $ 1,999.0 Rearrange this list in terms of the price per viewable image ...

**Pre-Calc/Trig**

Complete the following for each system that involves one or more quadratic equations: Solve the system algebraically 7y^2-5x^2+20x=3 5x^2+21y^2=209

**MATH 209**

Ace manufacturing has determined that the cost of labor for producing x transmissions is 0.3x2+400x+550 dollars, while the cost of materials is 0.1x2+50x+800 dollars. Find the total cost of producing x=500 transmissions.

**mathematics**

Given that log5 3=0.683 and log5 7=1.209.without using calculator,evaluate (a) log5 1.4 b)log7 75 c) log3 125

**Physics**

What is the apparent weight of a 75 KG astronaut 4200 km from the center of the earth's moon in a space vehicle.a) moving at constant velocity, and b) accelerating toward the moon at 209 m/s? state the direction in eachcase

**Chem**

A 0.1098 g sample of copper metal is dissolved in 34 mL of concentrated HNO3 to form Cu2+ ions and then water is added to make a total volume of 209.5 mL. (Calculate the molarity of Cu2+.)

**history**

What events caused the National Security Council to suggest the U.S. triple its current defense budget? What time period are you talking about? This might give you some ideas http://209.85.165.104/search?q=cache:Z0jf6XqFj6AJ:intelligence.senate.gov/108161.pdf+National+Security...

**Chemistry**

A 10.0g sample of H2O(l) at 23.0degrees C absorbs 209 joules of heat. What is the final temp of the H2O(l) sample?

**algebra**

A small garden measures 14 ft by 6 ft. A uniform border around the garden increases the total area to 209 ft2. What is the width of the border?

**Statistics**

How do I answer: A normal distribution has a standard deviation equal to 39. What is the mean of this normal distribution if the probability of scoring above x = 209 is 0.0228

**chemistry**

fill in the missing symnbols in the following nuclear bombardment reactions a. 96 4 100 42Mo + 2He = 43 Tc+ ? b. 59 1 56 27Co+ 0n = 25+ ? c. 23 23 1 11Na+ ? = 12Mg+ 0n d. 209 210 1 83Bi+ ? = 84Po+ 0n e. 238 16 1 92U + 8O= ? + 5 0n TEACHER DID NOT EXPLAIN THIS AT ALL SO CONFUSED

**college 209**

multiply (2 sqrt 7 -5 sqrt 3)(8 sqrt7-5 sqrt 3)

**Science/Math**

Hello, Suppose that a newly discovered element called centium has three isotopes that occur in nature. These are centium-200, centium-203, and centium-209. Assume that these isotopes occur in equal amounts in nature. What will be the average atomic mass of this element?

**Math 209**

When simplifying a rational fraction, why do you need to factor the numerator and the denominator? If there is a common factor in both the numerator and denominator, that factor will cancel, thus simplifying the fraction. e.g. 15/18 = (3*5)/3*6) =(3/3)*(5/6) =(1)*5/6 =5/6

**math 209**

A certain medicine is given in an amount proportional to a patient's body weight. Suppose a patient weighing 108 pounds requires 135 milligrams of medicine. What is the weight of a patient who requires 260 milligrams of medicine?

**Geometry**

I have to find the area of a triangle. The base is 22 The height is 11 square root 3... for this, it was 19.052... I rounded that to just 19. Was this okay??? I then get 418, divided by 2, and got 209 as the area. Was it accurate that I rounded that number?

**math 209**

Selling shirts. If a vendor charges p dollars each for rugby shirts, then he expects to sell 2000 100p shirts at a tournament. a) Find a polynomial R(p) that represents the total revenue when the shirts are p dollars each. b) Find R(5), R(10), and R(20). c) Use the bar graph...

**Statistics**

Scores on an SAT test have a mean of μ = 1026 and a standard deviation of σ = 209. Compute the margin of error of the sample mean for a random sample of 100 students.

**chemistry**

In an acid base titration,25.0 ml of nitric acid, HNO3, were neautralized by 28.0 mL of 0.209 mol/L calcium hydroxide, Ca(OH)2. What is the concentration of the nitric acid?

**geometry**

If the area of a trapezoid is 209 square yards and the bases are 15 yards and 23 yards. What is the height of the trapezoid?

**profit&loss**

P sold his bicycle to Q at a profit of 10%.Q sold it to R for #209 at a loss of 5%.how much did the bycycle cost? Please explain well thanks tutor

**chemistry**

The mole fraction of oxygen in air is 0.209. Assuming nitrogen is the only other constituent, what are the partial pressures (in torr) of oxygen and nitrogen when the barometer reads 780 torr?

**Math 209**

A particular rat given n trials in a maze can run through the maze in t minutes, where: t=6+_20__ n+2 How many trials are needed so that the rat can run through the maze in exactly eight minutes?