# Calculus (Answer Check)

86,783 results, page 35

### algebra

please write an explaination why (x^3)(x^4) is not x^12. I am confused thank you. it is not the answer because, first of all, try replacing x with another number, in this case, let's say two. (2^3)(2^4)= 128, and if you try 2^12, you do not get 128, instead your answer would ...

### Math (Calculus) (Related Rates)

A boat pulls away from a dock at 2 m/s, but the operator has neglected to remove the tow rope used to pull the boat up to the dock. This rope runs thru a pulley which is attached to the dock at a point 1 m higher than the point at which the rope is attached to the boat. A) How...

### Statistics

# Statistics - bobpursley, Wednesday, October 6, 2010 at 4:30pm second applet. Set mean to zero, std deviation to .8 oz check below enter shaded area .05 Notice the answer comes up 1.31 ounces. So the mean must be 5.3+1.31=6.61 Put that in for the mean, and verify. You should ...

### Chemistry check and help

what is ... Sodium bisulphate hydroiodic acid ammonium dihydrogen phosphate Zn(HCrO4)2 Calcium metal ferrous bromide sodium carbide phosphate radical Check... sodium bicarbonate NaHCO3

### calculus

A firework is launched at the rate of 10 feet per second from a point on the ground 50 feet from an observer. To 2 decimal places in radians per second, find the rate of change of the angle of elevation when the firework is 40 feet above the ground. Type your answer in the ...

### MATH

I have math questions I need to check my answers can you please help me 1. 4x4x4x4x4 as a power of 4 answer 4 to the fifth power 2.a bedroom is 10 ft by 11 ft what is the perimeter? answer 42 ft evaluate 72/8-9/3=6 3.Jamal is fencing a rectangular field that measures 25 ft by ...

### Calculus Help Please!!! Check

When a cold drink is taken from a refrigerator, its temperature is 5°C. After 25 minutes in a 20°C room its temperature has increased to 10°C. (Round the answers to two decimal place.) (a) What is the temperature of the drink after 60 minutes? (b) When will its temperature ...

### language arts (check answer)

please check this... which of the following shows a correctly punctuated compound sentence? A.As the miners,slept soundly,the thieves made off with all their supplies and gold. B.As the miners slept,soundly the thieves made off with all their supplies and gold. C.As the miners...

### calculus

One side of a right triangle is known to be 45 cm long and the opposite angle is measured as 30°, with a possible error of 1°. (a) Use differentials to estimate the error in computing the length of the hypotenuse. (Round the answer to two decimal places.)

### Calculus

Find a unit vector in the direction of v = (1,-1). Write your answer as a linear combination of the standard unit vectors i and j. Round each component to the nearest hundredth, if necessary. A 0.71i - 0.71j B 0i - 0j C 1.41i - 1.41j D 1i - 1j E 2.83i - 3.83j F -1i - 1j

### Calculus

Oil spilled from a ruptured tanker spreads in a circle whose area increases at a constant rate of 7.5 mi^2/hr. How rapidly is radius of the spill increasing when the area is 8 mi^2? I tried using A=(pi)r^2 and dA/dt=2(pi)r(dr/dt) and plugging in 7.5=2(pi)8(dr/dt) but the ...

### math answer check

14. Knowing that you use 245 KWH 7 a.m. – 7 p.m. and 165 KWH 7 p.m. – 7 a.m., answer the following questions using the chart below: Constant Usage $0.05324/KWH Daytimer (Most usage between 7 a.m. – 7 p.m.) As long as most power used is 7 a.m. – 7 p.m., then you receive...

### Calculus

For the function ƒ(x) = x2 find the slope of secants from the point (2, 4) to each of the following points. (3, __ ) (2.5 , __ ) (2.1 , __ ) (2.01, __ ) (2.001, __ ) Using the pattern from question 1, what do you think the slope of a tangent at the point (2, 4) would be? ...

### calculus

The revenue from the sale of x units of a product is represented by the following formula. R = 10(5x + 1)–1 + 70x – 11 dollars Find the marginal revenue when 50 units are sold. (Round your answer to the nearest cent.)

### Calculus

Which plane goes through the origin and is perpendicular to the line r=(2,-2,1) + s(2,3,-4), seR? a) 2x-2y+z=0 b) 2x+3y-4z=0 c) 2x+3y+z-4=0 d) none of the above. I got D, none of the above. I have substituted and couldn't find the answer equal to zero.

### Pre-Calculus

State the domain and range of the relation y = 2x + 3 My answer: y= 2x+3 y= 2(1)+3=5 domain: 1 range: 5 This is how my book showed me how to do it. I just wanted to make sure I did it right. If not could you please give me an example?

### calculus

A kite with a string 80 feet long makes an angle of elevation of 40 degrees with the ground, assuming the string is straight how high is the kite? round your answer to the nearest foot

### Calculus

At 2:00pm a car's speedometer reads 60mph, and at 2:10pm it reads 65mph. Use the Mean Value Theorem to find an acceleration the car must achieve. Answer( in mi/h2):

### Calculus

What is the average value of f(x) on [0,4] if the area between the graph of f (x) and the x-axis is equal to 12? I used the average value formula and got 12. But the answer key says 3. My work: M= 1/4 [12x] interval: [0,4] 48/4=12

### Pre-Calculus

The minute hand of a clock is 3 inches long. How far does the tip of the minute hand move in 5 minutes? If necessary, round the answer to two decimal places.

### Calculus

f'(x)=sqrt(x)*sin(x) The first derivative of the function f is given above. If f(0)=0, at which value of x does the function f attain it's minimum value on the closed interval [0,10]? I know the answer is 6.28, but I need steps as to why. Please and thank you.

### English

Which sentence is correct? 1) Check the manufacturing dates of the products. or 2) Check the manufacture dates of the products.

### Science URGENT

Is there any website or any way I can get the science probe 10 check your understanding answers cause I want to check my answers?

### English

I urgently need you to check these sentences. Whad do you think I should do? 1) I graduated with honours in modern languages and I know how important memory is in learning a foreign language. 2) The headmaster of the school I'm teaching at has warned me not to check and ...

### Calculus

I am re-posting this question because i wrote the incorrect function last time. An oil tank is being drained for cleaning. After t minutes there are v litres of oil left in the tank, where v(t)=35(25-t)^2, 0<=t<=25 a) determine the average rate of change of volume during...

### science(check answers)

can someone check my answer thanks ! 2.The ability to do work or cause change is called A.velocity. B.energy.(I PICK B.) C.transfer. D.friction. 3.Which type of energy is demonstrated by a person jogging? A.electrical energy B.nuclear energy C.electromagnetic energy D.kinetic ...

### Physics check

A speeder traveling at 41 m/s passes a motorcycle policeman at rest at the side of the road. The policeman accelerates at 3.3 m/s2. To the nearest tenth of a second how long does it take the policeman to catch the speeder? Im sorry I am new to physics this is my first year and...

### sewing.

can someone tell me if my answers are correct or not? thank you :) If your sewing machine were skipping stitches,wat would u check first? A.bobbin stitches B.needle setting C.thread type D.tucker my answer:A How do you secure the beginning and end of every seam? A.add a double...

### particular tense was chosen

Why a particular tense was chosen for each of the following statements. Select the best answer. A. Jack has known Mike for about a year. 1. Use the present perfect when the exact time of a past repeated action isn't important 2. Use the past perfect to show the sequence of two...

### Ed. Tech

When you save documents, it is important to check the blank at the top of the navigation window to ensure you are saving your file in the correct location. A. address bar B. insert ribbon C. file type D. file name Is the answer D?

### computer forensics

1.Check the operating system’s swap file. Using the WinHex to go through the swap file, have you found any interesting results? 2.Design a plan to check the ram slack and drive slack on your computer with the tool WinHex. Report your findings. 3. Use WinHex to check ...

### Calculus

You have a conical tank, vertex down, which is 12 feet across the top and 18 feet deep. If water flows in at a rate of 9 cubic feet per minute, find the exact rate of change when the water is 6 feet deep. You know the rate of dV/dt (inflow), and you can get the volume of a ...

### Calculus

Point A=(1,3,4) and point B=(-2,2,0). Determine AB. a) (3,1,4) b) (-3,-1,-4) c) (-1,5,4) d) (1,5,4) I chose answer C. 2. A goes from (2,1) to (4,-1) Determine the components of A. a) (6,0) b) (-2,2) c) (2,-2) d) (0,6)

### Physical Education - Check my answer please

Excess body fat may cause... Answer choices: 1. diabetes, lack of stored energy, stroke, and heart disease. 2. lack of organ protection, osteoarthritis, and hyper tension. 3. sleep apnea, lack of organ protection, and liver disease. 4. stroke, infertility, sleep apnea, and ...

### Variation

Please check my work, the answer I am suppose to get is 17.5, but instead I got 2.5. Solve the problem. 66. y varies jointly as a and b inversely as the square root of c, y=24 when a=6,b=4, and c=49. Find y when a=2, b=5, and c=16. -I got: y=kab/ sqrt of c, y=2*5/ sqrt of 16, ...

### Check out my answer for this science question plez

The chemicals make rain acidic how does it happen? Is it this it? The chemicals from the black smoke gets mixed up in the water cycle and creates acid rain.

### math

can someone check my answers approximately 4 out of 10 students at sonia's college lives on campaus. the college has 3,000 students . how many live on campus? 1,200 multiply (4)(-3/2)= -6 solve for the unknown 2/3=1.8 10 r answer 12

### medical info mangement

please check my answer thanks True or False If John Dale is responsible for accounting services for Weston Hospital he's the hospital's chief fisnical officer. I picked True

### Physics-Please help with formula

If I have an electric field around a charged object that is 2.95 x 10^6 N/C at a distance of 0.400m, how would I find the charge on the object? If you could just direct me with a formula-then I'll do it and check back with my answer-Thank you for you help

### ELA (CHECK)

Jose Envisioned a center with music classes. What does envisioned mean? A. watched a show about B. Saw in his mind C. Will see in his mind D. Became part of a vision The answer is C is it correct

### chem

do this using the appropriate number of sig figs 320.44 − (3104.1/2.6) i got -880 as my answer and it said to check my sig figs. I thought it was all the numbers up to the ones place

### Math Check

Hi! I posted this question yesterday and it was answered but I forgot to add something else to the directions. Directions: Write the system of equations sequentially so that it will correspond to the final matrix. Matrix: [-10 2 | 48] [-5 -6/4 |-9] My answer: 10x+2y=48 -5x+-6/...

### math

A construction expected a new project from start to finish to take 12 weeks. The crew will work 7 days a week. In how many days will the project be complete. Explain how you could check your answer to be sure it's correct.

### Georgia State History

Officials whose jobs are not provided for in the constitution but are required by law are known as__. A. constitutional officers B. secretaries of state C. deputies ** D statutory officials please check my answer :)

### chemistry

Predict the precipitate that forms: HCl + AgNO3 --> ??? i don't know what the answer is but i think it is Cing04 AgCl. You need to learn the solubility rules. If you don't have a web site I can give you one. hey watz up can you help me with a question please? If you have a ...

### Math, please check answer

Find the slope of the line through the given points. ( 8, -2) and ( 8, -1) Since 8-8 is 0 would the slope be 0 or would there be no slope?

### chemistry(check my answer)

Which equation describes the relationship between the rates at which Cl2 and F2 are consumed in the following reaction? a)-d(Cl2)/dt = -d(F2)/dt b)-d(Cl2)/dt = 2[-d(F2)/dt] c)3[-d(Cl2)/dt] = -d(F2)/dt d)2[-d(Cl2)/dt] = -d(F2)/dt e)-d(Cl2)/dt = 3[-d(F2)/dt] is it e

### Algebra2

can somenone please check my answer and if i'm doing it right.... The sum of a number and 17 more than twice the same number is 101. N+17(2)=101 N=67? N + (2N +17)= 101 3N = 84 Take it from there THANK YOU! =)

### math

solve the simultaneous equations to find the coordinates of the point of intersection for the pair of lines of the simultaneous equations. Then check the answer by graphing the equations 3x-y=-4 2x-y=0

### algebra

Find the value of y for a given value of x, if x varies directly with x. If y=39 when x=-117 what is y when x=-132 my answer y=k*x 39=k*-117 39/-117=k k=-0.3 y=k*x y=-0.3*-1.32 y=-3.96 can someone please check my work

### math plz help!!!!!!!

which ratios form a proportion? A) 4/5 , 20/25 B) 8/12 , 18/24 C) 1/3 , 7/24 D) 2/5 , 6/16 which ratio forms a proportion with 9/15? A)3/6 B)2/3 C)12/30 D)6/10##### which proportion has cross products of 5 x 24 and 8 x 15? A)5/8=15/24 B)5/24=8/15 C)8/24=15/5#### D)15/8=5/24 ...

### math check answers

You invest $75.00 the first month and $100.00 the second month at 3.75% APR. How much interest do you get at the end of the second month? $0.23 $3.36 $3.59 my answer $3.13

### math check answers

you invest $75.00 the first month and $100.00 the second month at 3.75% APR. How much interest do you get at the end of the second month? $0.23 $3.36 $3.59 my answer $3.13

### calculus

Could someone check my reasoning? thanx Find the derivative of the function. sin(sin[sinx]) I need to use the chain rule to solve. So I take the derivative sin(sin[sinx) first. Then multiply that by the inside which is the derivative of sin[sinx]. And multiply that by ...

### Literature

Can someone check my answer. Thank You "A Very Old Man With Enormous Wings" How does the priest respond to the man with wings? What do you think his response symbolizes? Answer: The priest response to the man with wings is of suspension. He feels that he could be an impostor ...

### Calculus

I know I posted this problem earlier but I don't think it will be seen anymore since it's almost at the end of the page: Find the total mass of the triangular region with coordinates (-1,0),(0,4),and (1,0). All lengths are in centimeters, and the density of the region is (x)=5...

### Science - Please Check my Answer 2

My problem: One runner in a relay race has a 1.50 s lead and is running at a constant speed of 3.25 m/s. The runner has 30.0 m to run before reaching the end of the track. A second runner moves in the same direction as the leader. What constant speed must the second runner ...

### math-statistics

A manufacturer claims that the life span of its tires is 50,000 miles. You work for a consumer protection agency and you are testing this manufacturer's tires. Assume the life spans of the tires are normally distributed. You select 100 tires at random and test them. THe mean ...

### Differential Calculus

Given that p=(2q^2-5)^2. when q=3, it is increased by 0.7%. find the appropriate percentage in p. solution dp = 2(2q^2-5) (2dq) dp = (4x(18-5)(0.7%) dp = 4(13)(0.7%) am lost from here is dp=52x0.7/100= 0.364% Responses Differential Calculus - bobpursley, Friday, August 14, ...

### DanH-- I NEED ENGLISH HELP

Almost_________ work would be better than___________. anyone's hers anyone's her's anyones hers anyones' hers' Please check my previous answer.

### Math

Answer check please: Consider the circle (x-3)^2 + (y+1)^2 = 169. The point (15,4) is on the circle. Find an equation for the line that is tangent to the circle at this point. I got y= 5/12x-9/4.

### chemistry check

Calculate the pH of:0.01M HCl pH=-log[H*]. ..=-log[0.01]. ..=2.is the pH of HCl,I enter -log on my calculator Igot 2 as my answer,Am I using the right step of formular?

### French

Can you check this thanks. Un Voyage Directions: Faites une question en utilisant l'inversion. 1. Robert a fait un voyage à Avignon l'année dernière. (que) Answer: Est-ce que un voyage Robert a fait? 2. Il est allé à l'aéroport avec ses copains. (où) Answer: Où est-ce ...

### English

Check out this site. http://www.cultureandrecreation.gov.au/articles/poetry/ Dear all, I need a poem that will help me answer the question "Is Australia seen as a Follower or a Leader?" I am yet to find 1 useful poem on that site... Maybe you should write your own poem. I have...

### Math check

what is the measure of an angle that is supplementary to the following angle. An Acute angle of 57º 57º+90º= Answer 147º

### Calculus I

Section The fundamental Theorem of Calculus: Use Part I of the fundamental Theorem to compute each integral exactly. 4 | 4 / 1 + x^2 dx 0

### Math: Calculus

Answer the following questions for the function f(x) = \frac{ x^3 }{ x^2 - 36 } defined on the interval [ -20, 16 ]. A. The function f(x) has vertical asympototes at____ and___ B. f(x) is concave up on the region___ to and____ to___ C. The inflection point for this function is...

### calculus

Find dy/dx for x2 + y2 = 2xy. 2. If 5x2 + y4 = -9 then evaluate d^2y/dx^2 when x = 2 and y = 1. Round your answer to two decimal places. Use the hyphen symbol, -, for negative values. 3. find dy/dx if f(x)=(x+1)^2x 4. Find the slope of the graph of the relation x2y + 4y = 8 at...

### Calculus

Find the critical numbers of the function. (Use n to denote any arbitrary integer values.) f(θ) = 12 cos θ + 6 sin2θ My answer was pi/2 and 3pi/2, but those were wrong. I don't understand the 'n' part, either.

### Calculus

Hello all, I would like some confirmation on a limits question. The limit is as h --> 0, [sqrt [73-5(x+h)] - sqrt (73-5x)]/h I multiplied by the conjugate of the numerator and reduced everything down to this final answer: [(-5)sqrt(73-5x)]/2 Is this correct?

### law

please check my answer thanks :) which is true of quashing 1.the pt has signed an authorization for relase 2. medical records have been subpoenaed 3. a malpractice suit has benn filed 3. a breach nof confidentiality has occurred. i said 2 none of the rally make sense to me

### U.S. History

please check this 1. The Great Awakening is best described as a. the conversion of thousands of Native Americans to Chrisitanity b. the shift of many New Englanders to the Quaker faith c. a total rejection of Puritian ideas d. a series of religious revivals in the British ...

### history

Describe the physical surroundings of Catal Huyuk. Check my answer The roofs were made of woven reeds and mud and were connected to one another like a honeycomb . Each dwelling contained an open hearth an oven in the wall and clearly defined sleeping area.

### Calculus

An important problem in mathematics is that of root finding: that is, given a function f (x), finding any roots of f in an interval. Exact methods exist for many functions: • In the case of a linear function f (x) = ax + b, this is easy. – If a ≠ 0, then x = −b...

### French ASAP

Can you check my answers thanks Directions: Use the clues to fill in the blank. (I don't understand 8, and 19) 1. Madame Durand n'a pas d'enfants. Mais elle a un petit ------, Minouche. Answer: Chat 2. J'ai un beau ------- pour Camille. C'est son anniversaire. Answr: Cadeau 3....

### Bio Bio Please check answer

Because codons are triplicates, there are ______ possible nucleotides combinations that could make a codon; each giving rise to one specific amino acid. Yet, there are only 20 amino acids used to produce proteins. Thsus, the gentic code is said to be _______. I. 16, unambigous...

### English

Posted by rfvv on Sunday, April 14, 2013 at 3:50pm. 1. He is riding a roller board. 2. He is in the air on the roller board with his arms spread in the picture. 3. Talk with your partner and check the Yes box if your partner likies the activity. If your partner doesn't like ...

### a.p. calculus help please!

My a.p. calculus teacher doesn't know how to do this problem (like many others) so he's giving us 5 points extra credit on our test if we can figure it out, but I don't know how to do it: It's as the lim-->infinity (x+sinx)/(x+cosx) We know the answer is 1 because it's in ...

### True or False health insurance

please check my answer True or False CHAMPVA would be considered a primary payer for a patient who has SSI I think it is False

### Science

check answer please. An object is pulled with 3 forces: 1 at 20n to the right another at 40n to the right and the third at 30n to the left. The net force is 30n to right

### algebra

1. the function f(x)=6x/3x-5 is one to one. find its inverse and check your answer. And on the second one can you tell me if I am correct. 2. solve the following exponential solution 7^2x+7^x+1-60=0 7^2 x+7^x-59=0 (49x)+7^x-59=0 49x/49=0/49 x=0/49 x=0

### Physics Help Please! Check the answer

an athlete stretches a spring an extra 40.0 cm. how much energy has he transferred to the spring, if the spring constant is 5286.0 N/m? Us= 1/2kx^2 =1/2(5286.0)(.40)=1057.2 J Thanks!

### Math

which value is the "whole" in the following problem: 14 is what percent of 56? I said the "whole" is 56, due to the problem not stating whether i was to solve the problem by using proportions or whatever. May you check my answer? Thank You

### Chemistry

I think these I know how to do ....just want someone to check..still sorta mixed up on the first question. Thanx For the following reaction, what is the correctly balanced reduction half-reaction? Fe(OH)3(s) + Cu(s) → Fe(s) + Cu+(aq) + OH-(aq) A. e- + Fe(OH)3(s) → ...

### Calculus (pleas help!)

For what values of k is lim x -> INF coshkx/sin2x finite? (Enter your answer as an interval or list of intervals, for example, (-infinity,3], (5,7). Enter none if no values of k will work.) Please help..

### Calculus (pleas help!)

For what values of k is lim x -> INF coshkx/sin2x finite? (Enter your answer as an interval or list of intervals, for example, (-infinity,3], (5,7). Enter none if no values of k will work.) Please help..

### calculus

The population of a certain community is increasing at a rate directly proportional to the population at any time t. In the last yr, the population has doubled. How long will it take for the population to triple? Round the answer to the nearest hundredth, if necessary.

### calculus--please help!!

Solve the inequality. x^3+9x^2-108 less than or equal to 0. Then write in interval noation. Please can you show me step by step on how you got the answer. I have tries and I am very confused.

### Calculus

Let f(x)=1/x. Compute the difference quotient for f(x) at x=1 with h=0.3 I know that the formula for difference quotient is (f(x+h)-f(x))/h, but I am not sure how I am supposed to plug this in. I have tried a few ways but webworks says that the answer is wrong every time.

### calculus 1

The point P(2,-1) lies on the curve y=1/(1-x) If Q is the point (x, 1/(1-x) find slope of secant line. these are the points 1.5 1.9 1.99 1.999 2.5 2.1 2.01 2.01 2.001 when i calculated it i got a negative number 1/(1-1.5)=-2 but the answer is 2. also would the points be (1.5, ...

### Calculus 1

Water is flowing into a vertical cylindrical tank of diameter 4 m at the rate of 2 m3/min. Find the rate at which the depth of the water is rising. (Round your answer to three decimal places.)

### Physics

A basketball player, standing near the basket to grab a rebound, jumps 73.6 cm vertically. How much time does the player spend in the bottom 15.4 cm of the jump? Ok...after this I swear I'm done! I just need someone to check my final answer, which is 0.0858 s.

### Health care

Please check my anser thank you :) You work in a doctor's office and have just submitted several claims to a commerical insurance company. Your office will probably be reimbursed based on what? My answer is traditional fee-for service system.

### physics(check my answers)

in a piston is locked in place and the cylinder is placed in a boiling water, the temperature, pressure, internal energy are all increase if a piston is being pushed inward, would it have the same answer as above

### chemistry

I got C_4 H_3 O_8 for this question but I'd like someone to check my answer, please. A 1.012 g sample of a compound containing C, H, and O was burned to produce 2.145 g CO2 and 0.3293 g H2O. Calculate the empirical formula of the compound

### Social Studies

What was the purpose of the Freedmen's Bureau? A. to provide assistance to former slaves and poor whites B. to protect Georgia's landowners C. to create segregation laws for Georgia D. None of the above My best answer is A can you please check @Ms.Sue

### Algebra

An oil spill from a tanker in pristine Prince Williams Sound in Alaska begins in a circular shape only 2 ft across. what happens to the area if the diameter is doubling each hour. How large will the spill be in 24 h? diameter= 2^(t+1) t is time in hours. Area= PI*radius^2= PI...

### Calculus & Vectors

Could someone explain this question to me? I attempted the question and here is why I chose the answer below. Thank you! -------------------------------------- 1. If A ⃗ is a vector representing 50 km/h northeast, what is 3/5 A ⃗? a) 30 km/h southwest b) 30 km/h ...

### Calculus

The measurement of the circumference of a circle is found to be 70 centimeters, with a possible error of 0.9 centimeter. a) Approximate the percent error in computing the area of the circle. (Round your answer to two decimal places.) b) Estimate the maximum allowable percent ...