Ask a New Question

Questions and answers by

Sarah

Questions (3,209)

Find the derivative of y=4sinx−2cosx
1. 1 answer
2. 560 views
let f(x)=2x-7. Use the rigorous definition of limit to show that lim x-->4 f(x)=1
1. 1 answer
2. 452 views
Find each value if cos A=12/13 with 0 (degrees) <= A <= 90 (degrees) and if sin B=8/17 with 90 (degrees) <= B <=180 (degrees)1.
1. 1 answer
2. 2,111 views
What are two types of wheelchairs used by the physically challenged students are the ?I think the two would be a orthosis and
1. 1 answer
2. 579 views
31.Identify the Hypothesis of the statement below.If you are riding on a train, then it will stop at every station on the line.
1. 0 answers
2. 757 views
Randall wants to mix 41 lb of nuts worth $2 per lb with some nuts worth $8 per lb to make a mixture worth $7 per lb.
1. 1 answer
2. 1,620 views
A chemist wishes to mix a solution that is 4% acid. She has on hand 66 liters of a 2% acid solution and wishes to add some
1. 1 answer
2. 2,440 views
The height of Tower A is 940 feet more than Tower B. The two towers have a combined height of 1,540 feet. What are the heights
1. 1 answer
2. 3,613 views
What is the electrostatic force between one object with a charge of +5.0 × 10−6 C, and a second object with a charge of +2.0
1. 1 answer
2. 793 views
1.In a pith ball experiment, the two pith balls are at rest. The magnitude of the tension in each string is |T| = 0.55 N, and
1. 2 answers
2. 1,266 views
One object has a charge of +5.0 × 10−6 C, and a second object has a charge of +2.0 × 10−6 C. The objects are 0.5 meters
1. 2 answers
2. 1,414 views
Randall wants to mix 41 lb of nuts worth $2 per lb with some nuts worth $8 per lb to make a mixture worth $7 per lb.
1. 2 answers
2. 2,655 views
Calculate H2Equation 1- CH4g+2O2g+CO2g+2H2OgH1=-890kj Equation 2- CH4g+O2g+CH2Og+H2OgH2=? Equation 3-
1. 2 answers
2. 479 views
Equation 1- 2Ss+3O2g+2SO3gh1=?Equation 2- 2Ss+2O2g+2SO2gh3=-594kj Equation 3- 2SO2g+O2g+2SO3gh3=-198kj Use Hess's law in your
1. 2 answers
2. 444 views
Consider this reactionN2g+O2g+2NOg H=180.5kj How much heat would be required to produce 1.300 mol NOg?
1. 1 answer
2. 470 views
The reaction of 1 Mol of iron metal with 3 Mol aqueous HCI produces 1.5 mol H2 gas, 1 mol aqueous FeCI3, and 87.9 kj of heat.
1. 4 answers
2. 772 views
What are few questions and stuff that people or anyone would want to know about electrical engineering.... I need help writing 3
1. 3 answers
2. 423 views
Traditional healers should be allowed to practice and prescribe medicines in hospitals and clinics and i agree with this topic.
1. 6 answers
2. 1,217 views
Speech about traditional healers should be allowed to practice and prescribe medicines in hospitals and clinics and I agree with
1. 2 answers
2. 821 views
What are few things that people want to know about electrical engineering??
1. 1 answer
2. 384 views
List the things that people actually want to know about electrical engineering
1. 3 answers
2. 482 views
I need 15 questions to ask an electrical engineer.
1. 3 answers
2. 495 views
How to write a history essay based on a question with prompts?
1. 1 answer
2. 526 views
Find all of the solutions for this addition problem. Each different letter in the puzzle stands for a different digit. Letters
1. 2 answers
2. 602 views
I need help writing a paragraph of why the stamp act of 1765 was not fair to the colonist.
1. 1 answer
2. 426 views
How can I prove that a superhero is a monster?i.e. - Spider-man
1. 2 answers
2. 470 views
Find the rotation in revolutions per minute given the angular speed and the radius given the linear speed and the rate of
1. 0 answers
2. 856 views
Meredith's new scale measures in both pounds and kilograms. The information on the box says the scale has a weight limit of 200
1. 2 answers
2. 744 views
What can I do now as a 7th grader to prepare and save for college
1. 1 answer
2. 432 views
Consider the following balanced equation:2N2H4(g)+N2O4(g)→3N2(g)+4H2O(g) Complete the following table showing the appropriate
1. 1 answer
2. 3,957 views
two small planes take off from the same airport at the same time. One travels north at 200 km/h, and the other, west at 150
1. 1 answer
2. 810 views
The bases of trapezoid $ABCD$ are $\overline{AB}$ and $\overline{CD}$. We are given that $CD = 8$, $AD = BC = 7$, and $BD = 9$.
1. 39 answers
2. 6,616 views
“Without consideration of ‘traditions’ and prejudices, it [Germany] must find the courage to gather our people and their
1. 2 answers
2. 1,330 views
What was the Columbian Exchange?A. The exchange of new goods globally as a result of European exploration B. A trading post
1. 1 answer
2. 772 views
Sir Thomas More was executed because heA. would not stand with Henry VIII against the Protestant revolt. B. would not accept
1. 3 answers
2. 1,027 views
Use the acidity model given bypH = −log[H+], where acidity (pH) is a measure of the hydrogen ion concentration [H+] (measured
1. 0 answers
2. 709 views
Medians $\overline{AX}$ and $\overline{BY}$ of $\triangle ABC$ are perpendicular at point $G$. Prove that $AB = CG$.In your
1. 11 answers
2. 2,301 views
How do I write a paragraph response based on a book-chapter?Thanks in advance!
1. 3 answers
2. 572 views
To stretch your income during retirement, you could:A. skip leisure activities. B. cut your food expenditures. C. cancel your
1. 2 answers
2. 612 views
If overall interest rates in the economy rise, a corporate bond with a fixed interest rate will generally:A. increase in value.
1. 1 answer
2. 1,894 views
Terry buys a shirt for $14.99 and a pair of jeans for $39.99. If the sales tax is 8.25%, what is the total price Terry pays for
1. 5 answers
2. 700 views
In the following situation, determine whether you are asked to determine the number of permutations or combinations. Then do the
1. 1 answer
2. 733 views
A ball is thrown from the ground toward a cliff of height h with a speed of 30.0 m/s and an angle of 60oabove horizontal. It
1. 1 answer
2. 842 views
A landscape architect wished to enclose a rectangular garden on one side by a brick wall costing $60/ft and on the other three
1. 1 answer
2. 6,817 views
Both ethanol (CH3CH2OH, MM=46.07g/mol) and methanol (CH3OH, MM=32.04g/mol) have been considered as fuels for automobiles. Which
1. 0 answers
2. 517 views
Please, need help.Anyone, I'll appreciated! For western history class, what did Arab culture look like before the appearance of
1. 1 answer
2. 515 views
Is Mercutio a foil to the Nurse? I think they are not, but can you please check my answer? Thanks
1. 1 answer
2. 371 views
A girl bought mangoes at 7.50 each. There were two types of mangoes: good ones and not so good ones. She sold the good ones at
1. 1 answer
2. 552 views
A 26.8 mL sample of a solution of RbOH is neutralized by 15.71 mL of a 1.918 M solution of HBr. What is the molarity of the RbOH
1. 2 answers
2. 1,007 views
Purpose some reasons why women were unable to keep leadership positions during the rein of terror? There is nothing about this
1. 1 answer
2. 449 views
In class, we are studying Romeo and Juliet. Do you know what tragedies afflicted Peter ,the servant to the Nurse? I know that
1. 1 answer
2. 427 views
@DrBob222I got the last question that I posted wrong and I solved it the same way. Could you show me the answer and how you got
1. 1 answer
2. 573 views
Suppose that 30 mL of 0.5 M CsOH and 55 mL of 0.1 M NaHS are mixed.What is the K for the dominant equilibrium in terms of Ka's,
1. 1 answer
2. 519 views
Suppose that 85 mL of 0.4 M NaF and 50 mL of 0.4 M HCl are mixed.What is the K for the dominant equilibrium in terms of Ka's,
1. 1 answer
2. 701 views
What is the complete ionic equation for the following reaction? Aqueous iron(III) sulfate is added to aqueous sodium sulfide to
1. 1 answer
2. 876 views
The equation V = -2000t + 20,000 describes the value in dollars of a certain model of car after it is t years old. If a car is
1. 1 answer
2. 676 views
How do I find a P VALUE given the Z statistic using the empirical rule?Doing this by hand
1. 1 answer
2. 427 views
How do I find a p value given the Z statistic using the empirical rule?
1. 1 answer
2. 466 views
The equation V = -2000t + 20,000 describes the value in dollars of a certain model of car after it is t years old. If a car is
1. 1 answer
2. 708 views
Suppose you are in a room that is a*10 meters. You can walk normally along the "a" meter long wall at "s" meters per second and
1. 1 answer
2. 640 views
Suppose x; y, and z are positive numbers that sum to 10. What is the largest possible value of xy + xz + yz?(a) First, suppose
1. 2 answers
2. 557 views
An HR manager at a large agricultural equipment company is considering proposingputting the sales staff on 4 day - 10 hours/day
1. 0 answers
2. 462 views
What is the critical value in this question?Assume that we randomly sample 200 residents of Indiana and ask them if they favor
1. 0 answers
2. 448 views
3NO2(g) + H2O(l) → 2HNO3(l) + NO(g)How many moles of nitric acid are produced starting from 5.00 moles of NO2(g) and 2.00
1. 1 answer
2. 2,635 views
How many oxygen atoms are present in 2.00 millimoles of H2SO4?
1. 1 answer
2. 592 views
suppose you put money into teo different bank accounts. In account #1 you deposit $500 and you will be earning 6% interest
1. 4 answers
2. 4,266 views
When 28g calcium reacts with 25 grams oxygen, how many grams calcium oxide form?I have 2Ca+ 2O2= 4CaO its is not working.
1. 1 answer
2. 668 views
A shirt is on sale for $12.75.this is 15percent off the original price.what was the original price of the shirt?
1. 3 answers
2. 881 views
A car fits onto a golden rectangle with a length of 12 ft. What is the cars width? Write your answer in simplified radical form
1. 2 answers
2. 1,317 views
A bolt manufacturer is using a hypothesis test with α = 0.01 to see if the diameter oftheir 0.75 cm diameter bolts are being
1. 0 answers
2. 710 views
Drug clinical trials are analyzed using hypothesis testing methods. As we’vediscussed, the null hypothesis in the effective
1. 0 answers
2. 572 views
Recall that the power (1 – β) of a hypothesis test is the probability that we will rejectthe null hypothesis given that it is
1. 0 answers
2. 574 views
Social order and norms of behavior are often learned in what era or school time?I think it's either college or adulthood
1. 6 answers
2. 520 views
A Story that contains little or no policy content and is not related to the days event but that commonly discussed popular
1. 3 answers
2. 544 views
How does lustre affect the amount of heat being absorbed by a black can
1. 0 answers
2. 492 views
A cheese pizza costs $5. Additional toppings cost $1.50 each. Write and graph an equation in two variables that represents the
1. 4 answers
2. 1,379 views
A bag contains 4 white, 3 blue, and 5 red marbles.1. Find the probability of choosing a blue marble, then a red marble if the
1. 3 answers
2. 1,018 views
What's the scale of the G?
1. 2 answers
2. 474 views
1. Where is pH found?2.what is the function of pH? 3.what principle guides the phenomenon of pH? 4.what is acid rain ?how is it
1. 1 answer
2. 395 views
Help, please!!!!I need to write a paragraph How do I write a good one? What types of paragraphs are there?
1. 3 answers
2. 506 views
What led to the fall of the Roman Empire in Western Europe, specifically in terms of political instability, economic and social
1. 2 answers
2. 638 views
The projectile launcher shown below will give the object on the right an inital horizontal speed of 9.40 m/s. While the other
1. 1 answer
2. 3,179 views
Help, Please!I don't quite understand what is asking in this assignment (Essay) Task: Write an essay that compares Frankenstein
1. 3 answers
2. 732 views
Help, Please!I don't quite understand what is asking in this assignment (Essay) Task: Write an essay that compares Frankenstein
1. 3 answers
2. 666 views
Is graduate tuition is tuition for graduate school? I want to become a nurse.Graduate tuition Nursing $828.00 per credit But
1. 4 answers
2. 599 views
The decibel level of a sound is given by dB=10log(EE0), where E0=10−12wattsm2 and E is the intensity of the sound.(a) Find the
1. 1 answer
2. 2,045 views
The half-life of randon-222 is 8 days. What was the original mass if 6 grams remains after 24 days?
1. 1 answer
2. 435 views
A 10.0 L container contains 1.0 L of solution of a gas. Assume [gas]=1.5x10^-4 M in solution when 2 mol of gas remain in gas
1. 0 answers
2. 629 views
the amount (in milligrams) of a drug in the body t hours after taking a pill is given by A(t)=30(0.8)t .(a) What is the initial
1. 1 answer
2. 5,550 views
The displacement of a block of mass 439g439 g attached to a spring whose spring constant is 66N/m 66 N m is given by x=Asin(ωt)
1. 0 answers
2. 456 views
The speed limit near a school is 30km/h but Joe Cool thinks he can ignore it. He is driving at 60km/h. To make matters worse, he
1. 1 answer
2. 620 views
What are some visual, auditory, reading/writing and kinaesthetic learning activities done in high schools?
1. 1 answer
2. 430 views
A bullet of mass 0.08kg is fired horizontally into a 10kg block which is free to move. If both bullet and block move with a
1. 1 answer
2. 697 views
Please, I don't want to complicate my life, so, what's the best effective way to write a topic sentence for my body paragraphs?
1. 1 answer
2. 480 views
Using the definition of the derivative, find the equation of the tangent line to y=2x-1/2 at (1/2,-1)Thanks!!
1. 1 answer
2. 521 views
Hi, I'm having a really hard time understanding this concept. I know the answers because my teacher told us them but I don't
1. 5 answers
2. 825 views
Describe one observation astronomers use to show that the universe is expanding
1. 1 answer
2. 351 views
-Explain how and when the universe formed according to the big bang theory?-Explain how and when our solar system formed?
1. 1 answer
2. 622 views
4. Write down a diﬀerential equation to express each of the following relationships:(a) The rate at which the volume of a
1. 4 answers
2. 618 views
3. Terminal velocity of an object in freefall is given by Vt = root 2gMA/Cdñ, where g is gravitational acceleration,Cd is the
1. 3 answers
2. 890 views

Pages

1
2
3
4
5
6
7
8
9
10

Ask a New Question

Archives
Contact Us
Newest
Privacy Policy
Terms of Use
© 2025