# Posts by Angélica

Total # Posts: 173

**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 what im doing wrong

*March 4, 2017*

**Math **

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

*February 15, 2017*

**math**

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

*October 18, 2016*

**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 tenth.

*October 11, 2016*

**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 media. Any topic ...

*August 29, 2016*

**college algebra**

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

*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 in the sample of the ...

*May 29, 2016*

**Math**

1.00 / 8 = 0.125 5 X 12 = 60 60 x 0.125 = 7.5

*May 8, 2016*

**Computer science (please help)**

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

*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

*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

*March 31, 2016*

**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 ?

*March 10, 2016*

**math**

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

*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?

*January 21, 2016*

**Chemistry**

Thank you so much

*January 19, 2016*

**Chemistry**

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

*January 19, 2016*

**Chemistry**

percent of gas

*January 19, 2016*

**ELA**

Think about the work you completed in your reading role. Determine the ideas that would be most worthy to share in a literary discussion about The Watsons Go to Birmingham---1963. Provide an explanation for your choices. How did the role you selected and the work you completed...

*December 11, 2015*

**Technical writing**

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

*November 23, 2015*

**math**

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

*October 27, 2015*

**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 to go after ...

*October 1, 2015*

**math**

Thank you so much!

*September 30, 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 then I took the second ...

*September 30, 2015*

**math**

For the derivative I got -4/(x+1)^2 by using the quotient rule. So then I plugged in zero and got -4 to be the slope. Then when I plugged 0 into the original function and got 2(0)-6/1 which meant that y=-6. Then I tried to find b by doing 6=-4(0)+b and got b to be -6. Thus my ...

*September 30, 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 following steps: 1...

*September 30, 2015*

**Math**

Oh wow, I was really off. Thank you so much for explaining it to me!

*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) = (ax + b...

*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 pregnancy that year. ...

*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?

*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 element and which is ...

*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 element and which is ...

*April 16, 2015*

**Math**

270

*March 11, 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 after Blvd. and...

*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?

*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?

*February 24, 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?

*February 17, 2015*

**grammar**

Thank you for the help! I understand the number of people is plural. It is nice of you to tutor online. Thank you for what you do, it makes a difference.

*January 28, 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 when ...

*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= ?

*January 7, 2015*

**English**

You rock! Thank you! I just got it. For what you do, thank you. I can't tell you how much you help.

*December 16, 2014*

**English**

Was is a linking verb, so let me think, would the clause that we will be moving in the spring be a predicate nominative because it is identifying or renaming the subject of the sentence? Is what the subject? Thank you for helping me. I'm more lost than I thought!

*December 16, 2014*

**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 ...

*December 16, 2014*

**math**

I agree @shy @candy

*December 16, 2014*

**English**

Thank you Writeacher, I pray you are blessed for your help.

*December 16, 2014*

**English**

Yes, the sentences we receive are really bad! I've talked to this teacher about this. You know how there are some who feel they are above question? She's one of them. With that in mind, do you concur it's an adverb clause? Thanks so much!

*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 ...

*December 16, 2014*

**math**

The correct answer is 15 bracelets

*December 15, 2014*

**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?

*December 7, 2014*

**Economics**

How to get annual interest cost?

*November 18, 2014*

**English**

Okay, I think I got this. The subject is they and the verb is inhabit. "That" became a direct object. I think I understand! Thank you very much. I keep getting confused on questions like these in my homework. Thanks again, I am very grateful.

*November 6, 2014*

**English**

The verb in the clause is inhabit. The subject is they.

*November 6, 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 or subject. ...

*November 6, 2014*

**Algebra please help out**

вαиαииαѕ=12. αρρℓєѕ=9 ρєαяѕ=18 ѕтяαωвєяяιєѕ=30

*October 29, 2014*

**math**

*I forgot to add that, I always get a never ending decimal as the answer... please help :)

*October 18, 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?

*October 18, 2014*

**Fractions**

5.25 or 5 ft and 3 inch

*September 23, 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.

*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.

*September 1, 2014*

**math**

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

*August 12, 2014*

**writing (and other)**

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

*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?

*July 30, 2014*

**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 who exercise ...

*May 11, 2014*

**math**

.15

*May 2, 2014*

**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)

*April 29, 2014*

**math**

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

*February 20, 2014*

**Math**

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

*February 13, 2014*

**Math**

My answer, that I got, was 225.

*January 16, 2014*

**Chemistry**

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

*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 show the temperature ...

*October 20, 2013*

**math**

Don't know the answer

*September 23, 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

*August 18, 2013*

**chemistry**

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

*June 3, 2013*

**math**

45 Degrees

*May 3, 2013*

**4th grade math**

360÷18=20°=20÷50=40 which is 40 degrees for each part

*April 16, 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 =

*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)? (Again, ...

*January 25, 2013*

**Science**

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

*January 25, 2013*

**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?

*November 14, 2012*

**social studies**

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

*October 26, 2012*

**7th grade math help asap plz**

i'm in the 6th grade and i know the answere to that!!

*October 21, 2012*

**Math**

2-4 is 9

*October 15, 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?

*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?

*October 9, 2012*

**literature**

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

*September 21, 2012*

**Math**

😪😏😏😏

*September 18, 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 braking period. How far has...

*August 27, 2012*

**math**

62 more than the quotient of 18 and 3

*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

*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

*April 12, 2012*

**government**

C New judge is appointed

*April 2, 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 on the car during ...

*March 11, 2012*

**math**

7.47

*March 10, 2012*

**chemistry**

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

*February 26, 2012*

**Science**

The rest stops the driver made are included in the calculations because that is hoe 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 on the road. In this...

*February 18, 2012*

**punctuation and grammar**

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

*January 3, 2012*

**Anatomy**

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

*October 10, 2011*

**Math**

Thank you I understand know

*August 29, 2011*

**Math**

Write the word form of the number that is 10,000,000 greater than 6,021,849.

*August 29, 2011*

**Reading**

Thank you so much I clearly understand now

*June 16, 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

*June 16, 2011*