# Angelica

Popular questions and responses by Angelica-
## Precalculus

Suppose a pendulum is meters long. The time, , in seconds that it takes to swing back and forth once is given by t=2.01 square root L . If a pendulum is 10.24 meters long, how long does it take to swing back and forth once? Round your answer to the nearest

*asked on October 11, 2016* -
## math

The product of two numbers is 88.The sum of two numbers is 26. What are the numbers?

*asked on October 18, 2016* -
## College Algebra

Jim wants to build a rectangular parking lot along a busy street but only has 2,700 feet of fencing available. If no fencing is required along the street, find the maximum area of the parking lot. I got the answer 911.25 which was incorrect I'm not sure

*asked on March 4, 2017* -
## geometry

A man who is 6 feet tall is standing under a streetlight and casts a shadow on the sidewalk the man is standing 15 feet away from the 20-foot streetlight. How long is his shadow ,s ?

*asked on March 10, 2016* -
## punctuation and grammar

My garden is full of water,because of yesterday's rain. Is this correct?

*asked on January 3, 2012* -
## Math

Water is draining from a large tank. After t min, there are 150000-7500t+t^2 litres of water in the tank.? a) Determine the average rate at which the water empties from the tank in the interval between 5 and 10 minutes. b) Determine the average rate at

*asked on June 30, 2019* -
## math

a jar contains 26 fluid ounces of spaguetti sauce. How many cups of spaguetti sauce do 4 jars contain?

*asked on February 20, 2014* -
## Chemistry --really need help!

I am really struggling with these problems!! A reaction mixture that consisted of 0.20 mol N2 and 0.20 mol H2 was introduced into a 25.0 L reactor and heated. At equilibrium, 5.0% of the nitrogen gas has reacted. What is the value of the equilibrium

*asked on February 19, 2010* -
## Chemistry

Benzene has a vapor pressure of 100.0 Torr at 26°C. A nonvolatile, nonelectrolyte compound was added to 0.309 mol benzene at 26°C and the vapor pressure of the benzene in the solution decreased to 60.0 Torr. What amount (in moles) of solute molecules

*asked on February 15, 2010* -
## Technical writing

Either Chris or the new employee ________ the mail before Dolores or Charles ________.

*asked on November 23, 2015* -
## Trigonometry

An observer (0) spots a plane flying at a 55 degree angle to his horizontal line of sight.If the plane is flying at an altitude of 21,000 ft., what is the distance (x) from the plane (P) to the observer (0)

*asked on April 29, 2014* -
## chemistry

N2(g) + 3H2(g) → 2NH3(g)+ 22,000 cal equals how much ΔH

*asked on June 3, 2013* -
## Statistics

A researcher believes that the percentage of people who exercise in California is greater than the national exercise rate. The national rate is 20%. The researcher gathers a random sample of 120 individuals who live in California and finds that the number

*asked on May 11, 2014* -
## economics

why was the federal reserve established ?

*asked on February 15, 2011* -
## answer please!!!!! Math

I'm having trouble with these 2 problems. (-7+p)(8+p) & (p-7)(p+8)

*asked on April 18, 2010* -
## math, answer please!

I don't understand how you do these 2 problems. (p-7)(p+8) & (-7+p)(8+p)

*asked on April 18, 2010* -
## help please, math.

(-7+p)(8+p) I don't understand this at all.

*asked on April 18, 2010* -
## Math

(p-7)(p+8)

*asked on April 18, 2010* -
## Science

What is a cell wall or cell membrane?

*asked on February 5, 2009* -
## math

The price of 4 citrons and 5 fragrant wood apples is 46 units. The price of 5 citrons and 4 fragrant wood apples is 53 units. Find the price of a citron and the price of a wood apple.

*asked on February 13, 2020* -
## Physics

Physics Question DYNAMICS: THE BRICKLAYER’S TALE Answer it based on a letter. Dear Sir: I am writing in response to your request for additional information in Block #3 of the accident reporting form. I put “Poor Planning” as the cause of my accident.

*asked on June 30, 2019* -
## Chemistry

Which THE PH VALUE OF A solution 0,01 mol/l a monoacido that presents ka= 1×10-6

*asked on January 19, 2016* -
## please help!!

Find the equation of the tangent line to the graph of f(x) = 2x − 6/x + 1 at the point at which x = 0. (Let x be the independent variable and y be the dependent variable.) I don't know how to find the derivative, i Keep getting it wrong. But I know where

*asked on October 1, 2015* -
## math

Find the equation of the tangent line to the graph of f(x) = 2x − 6/x + 1 at the point at which x = 0. (Let x be the independent variable and y be the dependent variable.) I got this question wrong. I thought the answer would be y=-4x-6 I followed the

*asked on September 30, 2015* -
## math

Henry is attending a rodeo in Union County. The nearest airport is in Vindale, which is 33 miles away. On a map, the rodeo grounds and the airport are separated by 3 inches. What scale does the map use?

*asked on February 17, 2015* -
## Physics

A 24g ball of clay traveling east at 3.3m/s collides with a 33g ball of clay traveling north at 2.4m/s . 1a)What is the movement direction of the resulting 57g blob of clay? 1b)What is the speed of the resulting 57g blob of clay?

*asked on December 7, 2014* -
## College Algebra

I am using Hawkes Learning System (8.7 Nonlinear Systems of Equations)and my problem is x^2+y^2=13 and y+7=x^2. The answers I came up with are 2 square root of 3 and 3 for my x's. And I received (5,-4) as the y-coordinates. Is this correct?

*asked on November 14, 2012* -
## Chemistry

Benzene has a vapor pressure of 100.0 Torr at 26°C. A nonvolatile, nonelectrolyte compound was added to 0.309 mol benzene at 26°C and the vapor pressure of the benzene in the solution decreased to 60.0 Torr. What amount (in moles) of solute molecules

*asked on February 15, 2010* -
## 2nd grade math

Danielle has 18 marbles. All the marbles are either black or gold. There are 4 more gold marbles than black. How many black marbles are there.

*asked on December 8, 2008* -
## S.S 8 grade

Why do you think King George III refused to consider the colonist' Declaration of Rights?

*asked on October 13, 2008* -
## math

The sun causes a flagpole to cast a shadow that measures 85 ft. from the base of the pole. At the same time of the day, a 6.5 ft. tall basketball player casts a shadow that measures 9.75 ft. Determine the height of the flagpole. Express your answer to the

*asked on April 29, 2020* -
## math

The sun causes a flagpole to cast a shadow that measures 85 ft. from the base of the pole. At the same time of the day, a 6.5 ft. tall basketball player casts a shadow that measures 9.75 ft. What is the scale factor relating the height of the ball player

*asked on April 29, 2020* -
## Math

10 years to 1 century

*asked on August 21, 2019* -
## Math

Ratio of 1 decades to 2 years

*asked on August 21, 2019* -
## Math

2 decades to 4 years

*asked on August 21, 2019* -
## Math

What is the ratio of 3 feet to 1 yard should be simplify

*asked on August 21, 2019* -
## Math

What is the ratio of 18 hours to 5 days should be simplify

*asked on August 21, 2019* -
## Math

What is the ratio of 18 hours to 5days

*asked on August 21, 2019* -
## Math

Ratio of 6 hours to 16minutes

*asked on August 21, 2019* -
## Math

Ratio of 6hiurs to 16 minutes

*asked on August 21, 2019* -
## Math

What is the ratio of 4 feet to 50 centimeter

*asked on August 21, 2019* -
## Math

What is the ratio of 18hours to 5days should be simplify

*asked on August 21, 2019* -
## Math

Ratio of 18hrs. To 5days

*asked on August 21, 2019* -
## Science

Compare the costs and benefits of operating a laptop computer using its battery versus using an electrical outlet. Include at least one social impact, one environmental impact, and one economic impact.

*asked on July 2, 2019* -
## Math

A 500mL of bottled water costs 10 pesos. In 100mL its cost is 2 pesos. How much is the cost of 100mL of tap water if your bill is 924 pesos in 42 cubic meter or 42,000,000 milliliters

*asked on September 8, 2017* -
## kapitolyo

How much force will give a mass of 50g an acceleration of 60cm/s^2

*asked on July 19, 2017* -
## Maths Perecntages

A fruit shop owner buys a box of 24 mangoes are $9. At what price should he sell each mango if he wishes to make a 30% profit?

*asked on May 5, 2017* -
## Math

The mass of the boulder is 48,567 kilograms.what is the mass of the boulder in metric tons?

*asked on February 15, 2017* -
## Ethics and Communication

Hi, I'm in need of a topic to research having to do with an ethical dilemma within an organization. I got to relate it to ethical principles of communication from Immanuael Kant for example. The topic of choice should be a recent event or issue in the

*asked on August 29, 2016* -
## college algebra

Use the associative law of addition to write an equivalent expression for (x+2)+y

*asked on August 7, 2016* -
## Chemistry

1. A sample of oxalic acid (H2C2O4, with two acidic protons), of volume 46.56 mL was titrated to the stoichiometric point with 17.06 mL of 0.297 M NaOH(aq). What is the molarity of the oxalic acid? Answer in units of M. 2. What mass of the oxalic acid was

*asked on May 29, 2016* -
## Computer science (please help)

How is a creating a virtual ecosystem different from the real world?

*asked on May 8, 2016* -
## math

What is the area of the two-dimensional cross section that is parallel to the base of the cylinder, rounded to the hundredths place? Use. 3.14 for the value of pi. The radius is 5.2 m

*asked on April 20, 2016* -
## SS

China's cities are growing rapidly due to A. a high percentage of arable land B. people moving there to look for work C. rural areas becoming too crowded D. the one-child policy I think it is B

*asked on March 31, 2016* -
## math

find the three consecutive even integers such that three times the first equals the sum of the other two

*asked on February 27, 2016* -
## solid mensuration

Pyramid with a rectangular base 6 cm and 8 cm, lateral face makes an angle of 30 degrees with the base. What is the altitude of the pyramid?

*asked on January 21, 2016* -
## math

Explain how you know if a number can be divided by 10 evenly

*asked on October 27, 2015* -
## math

For what intervals is g(x) = 1/x2 + 1 concave down? (Enter your answer using interval notation.) For this question I understand that we have to find where the second derivative is negative. So first I found the first derivative and got 2x/x^4+2x^2+1 and

*asked on September 30, 2015* -
## Math

I know that I have to apply the product or quotient rules for these problems but I'm not sure why I'm getting them wrong. Please help me! Find the derivative: 1) f(x) = x^6/108 times (6 ln(x) − 1) I got: 6x^5 times 6 ln(x)-1 + x^6/108 times 6/x 2) f(x) =

*asked on September 30, 2015* -
## statistics

Pharmaceutical companies advertise for the birth control pill an annual efficacy of 98.6% in preventing pregnancy. However, under typical use the real efficacy is only about 95%. That is, 5% of women taking the pill for a year will experience an unplanned

*asked on September 21, 2015* -
## math

Ronnie was 6 times as old as jhon 6 years ago. Four years from now ronnie will be 4 times as old as jhon. How old is jhon now?

*asked on September 8, 2015* -
## Science

Im having trouble with reading a chemical equation. ( Numbers on the right side of the element are subscripts ) A) 2SO2 + O2 +2H2O -> 2H2SO4 1. How many total molecules are represented? ( I m having trouble recognizing when it s a molecule or just an

*asked on April 16, 2015* -
## Science

Im having trouble with reading a chemical equation. ( Numbers on the right side of the element are subscripts ) A) 2SO2 + O2 +2H2O -> 2H2SO4 1. How many total molecules are represented? ( I m having trouble recognizing when it s a molecule or just an

*asked on April 16, 2015* -
## grammar

We just moved from Atlanta, Georgia, to 2716 Hickory Blvd., Austin, Texas. Is this sentence correct? I think it's not. I think the answer should be: We just moved from Atlanta, Georgia to 2716 Hickory Blvd. Austin, Texas. I don't think commas are needed

*asked on February 25, 2015* -
## honors chemistry

if you obtain 10 moles of water sugar sodium chloride copper and Styrofoam will each sample have the same number of particles?

*asked on February 24, 2015* -
## honors chemistry

I'm having trouble with this question in my molar mass lab. if you obtain 10 grams of water, sugar, sodium chloride, copper, and Styrofoam will each sample have the same number of particles?

*asked on February 24, 2015* -
## grammar

Hello, and good afternoon. My question deals with subject verb agreements. I understand time periods and amounts are singular verbs. Here are my samples: 'Three weeks is a lot of time to do a project,' and 'One half of the children like cupcakes.' I know

*asked on January 28, 2015* -
## physics

A roller coaster car with a mass of 130 kg travels through a loop with a diameter of 20meters. What is the minimum speed at the top of the loop so that the car stays on the tracks? m= 130kg r= 10m v= ?

*asked on January 7, 2015* -
## English

The sentence is 'What we forgot to mention was that we will be moving in the spring.' I found a clause, it's a noun clause. It's 'that we will be moving in the spring.' I think it's being used as a direct object. We is the subject. Forgot is the verb. What

*asked on December 16, 2014* -
## English

The is the sentence I'm uncertain about: These old journals are wonderful to learn what life was like a century ago. I know the infinitive is 'to learn.' I think it is being used as an adverb. It's modifying the adjective 'wonderful.' It's not a noun used

*asked on December 16, 2014* -
## Economics

How to get annual interest cost?

*asked on November 18, 2014* -
## English

Hermit crabs rely on a supply of empty mollusk shells that they inhabit. What is the function of the relative pronoun in the clause 'That they inhabit'? A. Possessive B. Object of a preposition C. Direct object D. Subject I think it is either direct object

*asked on November 6, 2014* -
## math

Mike fills his car's tank up with 20 gallons of regular gas at $2.09 per gallon. His car averages 25 miles per gallon. How many miles can Mike drive on a full tank of gas?

*asked on October 18, 2014* -
## Physics

Find the average velocity (in m/s) of an object that starts 200 meters north of town and is 1200 meters north of town after 200 seconds.

*asked on September 3, 2014* -
## Pre cal

1.Find the domain of the function algebraically y=3x-1/(x+3)(x-1) y=(1/x)+5/(x-3) 2.Find the range of the function y=10-x^2 y=(3+x^2)/(4-x^2) Please help me understand how to do them.

*asked on September 1, 2014* -
## math

= ( 1 + 3) * ( 6 - 4 / 2)

*asked on August 12, 2014* -
## writing (and other)

i need HELP!i cant answer the questions about hard topics.in all subjects!please help me.........

*asked on August 9, 2014* -
## Chem

For a particular reaction H = -32 kJ and S = -98 J/K. a.At what temp will the reaction be at equilibrium? b.If the temperature is increased from the equilibrium temperature what will happen?

*asked on July 30, 2014* -
## Math

(4k+5)(k+1)=0

*asked on February 13, 2014* -
## Chemistry

How many grams of NaCl are present in a 300 grams salt solution containing 9% NaCl ?

*asked on November 6, 2013* -
## algebra

Beatriz is creating graphs for her city’s Parks Department. Beatriz is trying to persuade the Parks Department to put in more gazebos for shade. For a local park, Beatriz wants to demonstrate the attendance as it changes every week. She also wants to

*asked on October 20, 2013* -
## physics

The amount of energy needed to power a 0.10-kW bulb for one minute would be just sufficient to lift a 1.0-kg object through a vertical distance of

*asked on August 18, 2013* -
## Calculus

Find constants a and b in the function f(x)=axe^(bx)such that f(1/7)=1 and the function has a local maximum at x=1/7. a = b =

*asked on March 27, 2013* -
## Science

The rms(root-mean-square) value of a periodic signal s(t) is defined to be rms [s]=(1/T Ss^2t dt)^1/2 where T is defined to be the signal's period: the smallest positive number such that s(t)=s(t+T). What is the rms value of the sinusoid s(t)=Asin(2πf0t)?

*asked on January 25, 2013* -
## Science

What is the period of the sinusoid s(t)=Asin(2πf0t)

*asked on January 25, 2013* -
## social studies

why did the gap between the rich and poor weaken the shang

*asked on October 26, 2012* -
## Math

which fractions are less than 5/6? 2/5 1/12 25/40 10/20 8/9 how do i know which is greater or less?

*asked on October 9, 2012* -
## Math

which fractions are less than 5/6? 2/5 1/12 25/40 10/20 8/9 how do i know which is greater or less?

*asked on October 9, 2012* -
## literature

What does the poet find ironic about her situation? In the poem In memory of M.B by Anna Akhmatova.

*asked on September 21, 2012* -
## Physics

A car starts from rest and travels for 7.0 s with a uniform acceleration of +2.1 m/s2. The driver then applies the brakes, causing a uniform acceleration of -2.0 m/s2. If the brakes are applied for 1.0 s, determine each of the following. 12.6 m/s at

*asked on August 27, 2012* -
## math

62 more than the quotient of 18 and 3

*asked on June 6, 2012* -
## chemistry

Describe in detail, the steps a student needs to carry out to accurately obtain a 500 ml solution of .100 M HNO3 from a solution of 1M HNO3

*asked on April 13, 2012* -
## physics - help !!!!!!!!

The magnitude of a vector is always : - a positive number - greater than 1 - an integer - none of the above. Thank you

*asked on April 12, 2012* -
## physics

The National Transportation Safety Board is testing the crashworthiness of a new car. The 1.87 103 kg vehicle, moving at 11.3 m/s, is allowed to collide with a bridge abutment, being brought to rest in a time of 0.463 s. What force, assumed constant, acted

*asked on March 11, 2012* -
## chemistry

What is the volume of CO2 at 25 degrees C and 1.3atm if 10.0g of Cburns at STP?

*asked on February 26, 2012* -
## Science

The rest stops the driver made are included in the calculations because that is !@#$%^& the problem is defined. However, suppose the bus driver's manager wants to know the average speed at which the driver was actually driving the bus that day while he was

*asked on February 18, 2012* -
## Anatomy

what is the white matter tracts in the ventral portion of the midbrain?

*asked on October 10, 2011* -
## Reading

Mary Olivers poem the journey explain the decision that the "you" in the poem made, and whether or not you think it was the right decision. I don't understand what their trying to say

*asked on June 16, 2011* -
## Language Arts

Pronuniation

*asked on January 19, 2011* -
## 11th grade

I need help interpreting a quote...." in this world goodness is destined to be defeated ".

*asked on December 9, 2010*

## Pages

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