Calculus (Answer Check)

85,687 results, page 19

P.E. help please

It is important to(blank) thr victim before calling 911 A. Call B. Care C. Check D. Catch Is the answer C?

Chem

Can you check to see if I'm correct? Which of these substances are elements? a. silicone b. quartz c. iodine d. water e. silicon f. lead is the answer: c, e, and f?

Alg2.

4x^5 -2x^3 +2x +4 by 2x+1 synthetic division Would it be like this: 2x+1=0 ; x=-1/2 -1/2 |4 0 -2 0 2 4 | -2 1 .5 0 -1 |___________________ 4 -2 -1 .5 2 3 4x^4 -2x^3 -x^2 +.5x +2 R 3/2x+1 Is this correct? Can you check my answer multiplied by 2x+1 to see if it gives me the ...

Logarithms

Solve the following equations for x and check the solution using log. 2^6x-1 = 28 The answer is log56/6log2. Explain each step.

Math

What is the lowest common denominator of the four fractions listed below? 20 7/10; 20 3/4; 18 9/10; 20 18/25 a. 2 b. 40 c. 50 d. 100 Answer-a Please check the above.

Algebra 2

Will someone please check if I am right???? find the second and third term of the arithmetic sequence -7, __,__,-22,-27... Options: -12,-15*** My Answer -17,-12 -10,-17 -12,-17

Math Check

Find the volume when the solid has a base of the x-axis and a semi-circle of y=sqrt(25-x^2). My answer is 500/3. Is that correct?

precalculus

can you check my work I really do not understand. Find the standard form of the equation of the parabola with focus(8,-2) and directrix x=4. answer= (y+2)^2=-16(x-12/8)

Math (please check my answer!!)

Which of the following is the point of concurrency of the medians of the triangle? A. The incenter B. The circumcenter C. The orthocenter D. The centroid <<<

math plase check

What number would be used to represent a temperature of 7- degrees below zero. I think its is -.70 please check

calculus

A 13 ft ladder is leaning against a house when its base begins to slide away. By the time the base is 3 ft from the house, the base is moving at the rate of 5 ft/sec. Answer the following: At what speed is the top of the ladder sliding down the wall at that time? Answer = ft/...

precalculus

can you check my answers? Find Pk + 1 if Pk = 7 + 13 + 19 + ...+[6(k - 1)+1] + (6k + 1) 7 + 13 + 19 + …+[6(k - 1) + 1] + (6k + 1) + [6(k + 1) + 1] 8 + 14 + 20 + …+[7(k - 1) + 1] + (7k + 1) 7 + 13 + 19 + …+(6k + 1) 7 + 13 + 19 + ...+[6(k - 1) + 1] + (6k7 +1) + (6k + 2) ...

Calculus

Here's another one - I think that I am starting to understand it. Find dy/dx by implicit differentiation: x^7 = cot y My answer is csc^2y / 7x^6

Calculus

Use integration by parts to find the given integral: ∫_9^1 (7t - 42)e^(7 - t) = [-28(1 + e^8)] / e^2 Is my answer correct? or... is it.. = -70e^(-2) + 14e^6

Calculus

I am having a mental block. I have the answer to the question. It is (-‡,‡). I just need help figuring it out. The equation is: x^2+1>0

Calculus

[Linear Approximations and Differentials] I tripled checked my work but I'm still not getting the correct answer. y=3x^2 x=3 & delta x =0.2 I get 3(3.2)^2 - 3(3) = 21.72

calculus

Find an equation of the plane orthogonal to the line (x,y,z)=(-4,-9,9)+t(-8,-1,5) which passes through the point (-9,9,-4). Give your answer in the form ax+by+cz=d.

Pre-calculus

The problem is Find the difference quotient and simplify your answer F(x)=5x - x^2, F(5+h) - F(5) over h ^2 this means power of two

calculus

Find the derivative of the given function. Simplify and express the answer using positive exponents only. y= ((9x^2-4)^3/7x^2+4)

calculus

find the domain of the following function. State your answer in interval notation. f(x) = 5x + 10/ x + sqrt -26x - 169

Pre-calculus

Use the remainder theorem to find which of the following is not a factor of x3 + 12x2 + 47x + 60 the answer is x-5 but idk why

calculus

Find all relative extrema of the function. (Enter NONE in any unused answer blanks.) f(x) = x4 – 8x3

calculus

solve the following exponential equation 9^x=6 I get In6/In9 what is the answer approximated three decimal places?

Pre-Calculus

Simplifying Complex Fractions [(x+3)/12] / [(4x-5)/15] [(x+3)/12] x [15/(4x-5)] (x+3)5/4(3x-5) (5x+15/12x-20)<-- final answer Did I do this right. If not could you please explain how to do it correctly

pre calculus please help

Find all solutions of the equation tan^5 x - 9tan x =0. The answer is Ak\pi where k is any integer, the constant A=???

calculus help

What constant acceleration is required to increase the speed of a car from 22 mi/h to 50 mi/h in 3 s? (Round your answer to two decimal places.)

Calculus

find area of the region bounded by the curves y=x^2-1 and y=cos(x). give your answer correct to 2 decimal places.

Calculus

How do you integrate 2x^5 • e^x^2 ? I would say that this cannot be evaluated because the answer is more complicated than the original problem. Am I correct? Or is it doable?

math/Calculus

If h(x) = csc(x), find the inverse h^(-1)(x). express answer in terms of sin^(-1), cos^(-1) or tan^(-1) Don't know where to start -

Calculus

The function f is given by f(x)=3x^2+1. What is the average value of f over the closed interval [1,3]? The answer I get is 12, but the book says it's 14. I don't understand why.

calculus

How would you use series to evaluate the lim(x->0) of (x-arctanx)/x^3? I'm getting stuck, and the answer says it's 1/3 but I don't know how they got there.

Calculus

For a cylinder with a surface area of 20 20, what is the maximum volume that it can have? Round your answer to the nearest 4 decimal places.

Calculus II

Find the derivative of 5^(x^3+x) I know the answer, it's: 5^(x^3+x)*ln(5)*(3x^2+ 1) I just need some help on how to derive that. What rule is at work here? where did the ln come from?

Calculus; Product Rule

Find the value of dy/dx for the given value of x. a) y = (1 - 2x)(1 + 2x), x = 1/2 y' = 2(1 + 2x) + 2(1 - 2x) y' = 2 + 4x + 2 - 4x y' = 4 How do I find the derivative at x = 1/2 if there is no x variable to substitute the x value with? According to my textbook, the answer is -...

statistics

Assume heights and weights are normally distributed with the given means and standard deviations from the table below. Strata Mean Standard Deviation Mean Standard Deviation Height Height Weight Weight (inches) (inches) (pounds) (pounds) U.S. Men 69.3 2.8 191 28 U.S. Women 64....

Calculus

1. Chris makes an open-topped box from a 30-cm by 30-cm piece of cardboard by cutting out equal squares from the corners and folding up the flaps to make the sides. What are the dimensions of each square to the nearest hundredth of a centimetre, so that the volume of the ...

Calculus Please Help

The radius of a 12 inch right circular cylinder is measured to be 4 inches, but with a possible error of ±0.2 inch. What is the resulting possible error in the volume of the cylinder? Include units in your answer. my answer 30.16

calculus

relative extrema x^3 + 1/2x^2 - 2x + 5 Ok I have 3x^2 + x - 2 = 0 Am I on the right track? I think i know why I kept on asking for help with these pribelms. I forgot the step of factoring. Please check... 3x^2 + x - 2 = 0 (3x-2)(x+1)=0 x=2/3, x=-1 Correct. Nice job. If you ...

Health please cehck my answer

please check my answer thanks :) Dr Bob make an erronrous entry in the record. Three years later nurse Sue noticed the mistake and corrected it Why was this correction improper !. Too much time passed to correct the record 2. The corretion was made by the nurse not the doctor ...

calculus

what is the answer for the integral of (1/(xln(x)) from 1 to infinity? I first found the integral using u substitution- so u=ln(x) and du=1/x*dx this gave my du/u,leading to the ln(u) =ln(ln(x)) from 1 to infinity then I did the limit as t approaches infinity of 1/(tln(t)) - ...

calculus

Sand falls from a conveyor belt at a rate of 20 m^3/min onto the top of a conical pile. The height of the pile is always 3/4 of the base diameter. Answer the following. a.) How fast is the height changing when the pile is 10 m high? Answer = m/min. b.) How fast is the radius ...

calculus

Find the arc length of the graph of y = x from x = 0 to x = 3 using calculus.

calculus

I need help with this calculus problem. H(S)=S/(1+S) If F 1/2, -1/2 & (a+1)? I can't figure out what this mean /?

calculus

Why do we end up with f(x) instead of f(t) on the second fundamental theorem of calculus?

calculus

Use the Fundamental Theorem of Calculus to find G'(x) if: /x² G(x)= / cos t dt / 1

PLEASE HELP CHECK ANSWER SCIENCE

5. Which of the following body systems does not rely on the autonomic nervous system to stimulate involuntary events? A. skeletal system B. digestive system C. circulatory system D. respiratory system My Answer skeletal systems

Chemistry please check

1. All of the naturally occurring radioactive decay series end when the radioactive elements have decayed to bismuth (Bi) hydrogen (H) lead (Pb) uranium (U) answer: Uranium (U) 2. This type of radiation can easily pass through a human. gamma ultra-violet beta alpha answer: ...

Business Finance

Please help!!!!!!!!!!! On November 1, 2009, Broom Company received a bank statement that showed a $2950 balance. Broom showed a $4010 checking account balance. The bank didn't return check No. 124 for $1080 and check No. 138 for $720. A $3200 deposit made on October 30 was in ...

Nutrition of the young child

Following the nutritional label on a jar of peanut butter, you determine that 1 once of the peanut butter contains 115 calories and 9 grams of fat. Whst percent of the calories come from fat. A.30 B.40 C.70 D.80 I chose C as my answer. Can someone check my answer.

i-ready mastery check

Sally has 3 white tennis balls and 4 orange tennis balls. Drag a ratio into each box to represent the relationship between the two quantities. Answer choices may be used more than once. Not all answer choices will be used.

calculus-can someone please help me with this ques

Find all zeros of the following polynomial. Write the polynomial in factored form. f(x)=x^3-3x^2+16x-48 I put: x^2(x-3)+16(x=3) (x-3)(x^2+16) For zeros: x-3=0 x=0 **My teacher stated check the equation solution again. What is the value for x and hence what is the zero for the ...

Safety

who is the father of occupational medicine in the United States I can't find anything on the web. Here is my suggestion: At the school, check the encyclopedia under Public Medicine, and Occupational Health. If that fails, call the local Public Health Service and ask to speak ...

Spanish-Please check my answer

Did I answer the question correctly? ¿Qué haces cuando hay un examen grande? Yo estudio cuando hay un examen grande Thank you

math(check answers please)

please check my math answers again thanks. by the age of 27,justin had visited 25 out of the 50 states.what fraction of the states had justin visited?write the answer in simplest form. A.2/1 B.25/50 C.1/2(I PICKED THIS) D.1/3 Heather drove 10 miles in 22 minutes.which is the ...

Chemistry

I would like to check my answer to the following question: The permanganate ion oxidizes bromide in acidic conditions to form bromine, manganese(II) ion and water. Give the balanced equation of the reaction. My answer: 3e- + 8H+ (aq) + MnO4- (aq) + 2Br- (aq)  Br2 (aq...

Math

Brody deposited $500 into an account that earns 4.2% interest compounded annually. He makes no additional deposits and no withdrawals. Approximately how much interest will the account have earned after 7 years? A $167 B $420 C $542 D $665 I think the answer is D. But can ...

Math - please double check me

There are 42 accounting classes with 31 students in each class. Estimate the total number of students in the accounting classes. a. 1200 b. 900 c. 1600 d. 1500 answer: c One kilometer is equal to 1000 meters. What fractional part of a kilometer is 500 meters? Simply your ...

French

Could you check these thanks Directions: Complete each sentence with the correct form of the verb in parentheses. 1. Le matin, tout le monde veut la salle de bains. Moi, je -------- à sept heures. (se réveiller) Answer: me réveille 2. Mon frère -------- à sept heures ...

Pre-Algebra

Can U Just Check My Answer Please! Thank You Guys :D Complete the sentence below. Scatter plots are used to look for a pattern of association, or trend, between ____________ A) one set of values. B) two sets of values. C) three sets of values. D) four sets of values. My Answer: B

Pre-Algebra

Can U Just Check My Answer Please! Thank You Guys :D Complete the sentence below. Scatter plots are used to look for a pattern of association, or trend, between ____________ A) one set of values. B) two sets of values. C) three sets of values. D) four sets of values. My Answer: B

Math - Solving equation (check )

7 = (210+88t)/(2(sqrt(210t+44t^2))) Is t= 1.0479....? I got the denominator multiplied by 7 and squared both sides to eliminate the sqrt and then simplified, used the quadratic formula to find the values but since the questions is about squirrels growth it can not be a ...

about jiskha/ math

I had a dumb question awhile ago I had submitted a question ( Ted bought four lawn chairs for $ 22 each a pinic table for $ 212 and an umbrella for $85) etc anyways I had wanted someone to check my answer which they did , however I lost my paper Is there away to retrieve my ...

calculus; implicit differentiation

Use implicit differentiation to find the slope of the tangent line to the curve at the point (4,1) -1x^2 - 4xy + 3y^3 = -29 I differentiated both sides and solved for dy/dx and got 2x-4y/9y^2-4x. Then I plugged in X and Y and got -4/7 but when i enter my answer it's wrong. ...

Calculus 1

Use the fundamental theorem of calculus to find the area bounded by f(x)=3 square root of x+2x and the x-axis between x-=0 and x=1

Calculus AP need help!

Use Part 1 of the Fundamental Theorem of Calculus to find the derivative of the function. If f(x)= ∫(4,x^3)√(t^2+10) dt then f '(x).

vocab (english)

i have improving vocabulary skills 4th edition book and i need sentence check 2 answers and final check

Pre-Calc-Please check my answer-I think I have it

Could someone please check these-I had tried one last night but it was really wrong so I'm been working-hopefully these are correct. What are the roots of the equation and answers have to be simplified 2x^2 + 5x-10 =0 2x^2 + 5x-10+10=0+10 2x^2 + 5x = 10 2x^2 + 5x/2 = 10/2 2x^2...

Pre-Calc-Please check my answer-I think I have it

Could someone please check these-I had tried one last night but it was really wrong so I'm been working-hopefully these are correct. What are the roots of the equation and answers have to be simplified 2x^2 + 5x-10 =0 2x^2 + 5x-10+10=0+10 2x^2 + 5x = 10 2x^2 + 5x/2 = 10/2 2x^2...

Math

Please double check me Find each rate 240 pounds of fertilzer divide by 6 lawns Answer: 40 lbs/lawns Which is the better buy: 5lb of sugar for $4.75 or 20lb of sugar for $19.92 Answer 5lb Write the following proportions If Maria hit 8 home runs in 15 softball games, then she ...

Algebra-Please check

Please check- sqrt of 2x + 15 = x Answers: -5.3 -3.5 -3 5 I think according to my calculations it would be 5, correct? sqrt root of 7-x = 3-solve for x Answers: -2 2 4 -4 My choice would be 2 Is that correct- I squared both sides and came out with 7-x = 9 and then x = 2 Thank ...

Chemistry- Answer Check

In an ideal gas, if only one molecule in a thousand has enough energy to react, how can all molecules in a reactor be consumed? My answer: when the one molecule reacts, it causes the other molecules to gain energy. Is this right? I'm still confused on the question

Calculus

Water is drained out of tank, shaped as an inverted right circular cone that has a radius of 16cm and a height of 8cm, at the rate of 4 cm^3/min. At what rate is the depth of the water changing at the instant when the water in the tank is 6 cm deep? Show all work and include ...

Physics

Two students are on a balcony 20.5 m above the street. One student throws a ball (ball 1) vertically downward at 11.1 m/s; at the same instant, the other student throws a ball (ball 2) vertically upward at the same speed. The second ball just misses the balcony on the way down...

calculus

Help! I have a test tommorow! I don't understand (b), (c), (e), and (g). The answers are listed following the each question. Here's a discription of the graph: There is a graph of a function f consists of a semi circle (-3 to 1 faced downward on the x-axis) and two line ...

English Check answers

2) Your online chat name should never contain your full name. True or False ~ (My answer is TRUE) 3) It is safe to tell your online acquaintance (someone you have NEVER met) your a. full name b. address c. phone number d. favorite music ~ (My answer) 4) Using the ideas of ...

Pre Calculus

Find the roots of the function g(x)=x^3 +16x a)0,4i, -4i b)0,-4,-4i c)0,4,4i d)0,4,-4 The equation can be rewritten x(x^2 + 16) = 0 The function is zero if x = 0, OR if x^2 = -16 That should give you a hint of what the roots are. So you take the square root of -16 which gives ...

calculus

Find the distance from (3,7,-5) to each of the following. a. the xy-plane b. the yz-plane c. the xz-plane d. the x-axis e. the y-axis f. the z-axis **I just wanna check my answers because I didn't really understand it when the teacher was explaining it and it's an even ...

Math

Can someone please check my answers? A yard has a square gate that has an area of 8 square meters. 1. What is the height of the gate in meters? Answer: 28 meters 2.How many feet would that be? Answer: 8.4 feet 3. If each side was 1 foot longer, what would be the area of the ...

Calculus, check my answers, please!

Could someone tell me if I'm right, and if not what the correct answer is? Thank you! I'd appreciate an explanation, too, if you could. :) 1. Suppose you're given the following table of values for the function f(x),and you're told that the function is even: x f(x...

French

Could you please check these thanks. Directions: Complete the following with croir. 1. Il------- que tout est moins cher pendant les soldes. Et vous, vous ---------- ça aussi? Answer 1: croit Answer 2: croyez 2. Julien -------- que l'examen va être facile, mais nous, on...

math

If I am making a map that has a distance of 200 mm, and the actual distance is 700m. How do I find the calculations to know how much each mm is? You can set up a proportion with x being the number of meters represented by each mm. 200 mm / 700 m = 1 mm / x If you post your ...

algebra -

#21 -can you help me solve this equation: 3x^2 (2x - 2) i keep getting: 6x ^2 -6 #22 can you check this one: (2x ^2) (6x^2) i got 12x #23 can you check this one: (4m^2 + m -2) + (-m^2 - 3m) i got: -4m ^2 + 4m-2 #25 can you check this one: (3x^2 -x -1) + (2x^2 + 2x -1) i got: -...

English

Please check my answer thanks:) This is an example of paraphasing Sue studied Dr Jone's article and restated it in her own words. I said yes

Health Law

please check my answer thanks :) a pretrial conference most likely would occur when... i said ... during an appeal

math mortgages please check answer

The monthly payment on a$100,000 mortgage at a rate of 8 1/2 % for 20 years is 8678.23 I am not sure

health

In which condition is the patient most likely to hemorrage? a.thormbocytopenia b.polycythemia c.thalassemia d.erythroblastosis fetalis (c) could you please check my answer?

chemistry

At what temperature (C) will a gas sample occupy 6.1 L if it originally occupies 17.8 L at 27.1C? T1V1=T2V2 T1(6.1)=(17.8)(300.25) T1=876? Please check my answer

chemistry

At what temperature (C) will a gas sample occupy 6.1 L if it originally occupies 17.8 L at 27.1C? T1V1=T2V2 T1(6.1)=(17.8)(300.25) T1=876? Please check my answer

chem- check my answer

magnesium hydroxide + hydrobromic acid --> is the formula for that Mg(OH)2(s) + HBr(aq) ->H2O(l) +BrOH(s) and are the physical states correct??

8th grade math

I am not sure if I did it correct, can you please check this answer for me, Ms.Sue? :) Writing equations in point-slope form: m:3, p:(-1, -2) (y-y1) = m(x-x1) y-(-2)=3(x-(-1)) y+2=3x+3 y+2-2=3x+3-2 y=3x+1

office finances

which of the following would require a cash receipt a.credit memo b.purchase order c.check d.refund my answer is b

teachers aide

Resources for educating young children with diverse abilities part-3 Please check my answer?This is my last exam. 1--c 2--b 3--c 4--c 5--a 6--d 7--b(not sure) 8--d 9--b 10-c 11-b 12-a 13-d 14-c 15-d 16-a 17-c 18-d 19-c 20-a

check my science hw please.

24. can provide an economic benefit to A. drug companies B. tourists C.hikers D.endangered species I got A for my answer.

Maths

Check my answer please? Not sure if I did this right. Let y = f(x) be a cubic polynomial with leading coefficient a = 2 and f(-2) = f(1) = f(2) = 0. find the factored form of f. I got: f(x) = 2(x + 2)(x - 1)(x - 2)

Edu tech

Can you please check this Probability can be used to determine the likelihood of specific ________. A:games B:occurrences C:questions D:opportunites D is my answer

Language arts

most unintentional poisoning occur in children under A.10 B.2 C.5 D.6 months My best answer is b can you check please @Ms.Sue

Math

Please check my answer~ Find the distance between points C (4,12) and D (-2,5) to th3 nearest tenth. d=sqrt(-2,4)^2+(5-12)^2 d=sqrt36+49 d=sqrt85 d=9.2

ss

Can someone check this answer? Haiti shares an island with which country???? A-el Salvador B-The diminocon republic C-Cuba D-The Bahamas I think it is b or c pls help :)

Chemistry

Can someone check my answers for me thank you. This is my 3rd time posting this one up...maybe its just not going through bc I don't see it on the current ?s. 4NH3 + 7O2 --> 4NO2 + 6H2O 1)How many grams of oxygen are necessary to produce 4.50 moles of NO2? answer: 252 grams...

math

If the answer is 1-2/3m what is the question> How can you solve equations like these? 9r + 7 = 4r - 8 Need to get the r on one side. 1st- subtract 4r from the right side of the = sign. What you do to one side do to the other. 9r-4r+7=4r-4r-8. 5r+7=-8 2nd- subtract 7 from ...

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