# Calculus (Answer Check)

85,687 results, page 65

### Math

I have the problem: A triangle has a base of 3.6 cm and an area of 22.32 cm squared. What is the height of this triangle. The teacher gave us the answer key and I know the answer is 12.4 but I don't know how they came to that answer. I can't figure out how you are supposed to ...

### algebra PLEASE HELP ASAP

1. the probability of a basketball player hitting a foul shot is 1/3. how many shots would you expect her to make in 90 attempts. a. 30 b. 60 c. 3 d. 45 my answer is b? 2. simplify 8P3. a. 42 b. 336 c. 40,432 d. 56 my answer is d? 3. how many ways can 4 students be chosen from...

### History

Hai! Anyone Please Check This Answer Please! Which of the following is the most likely reason why many Mexicans were opposed to American investment in their country? A. American leaders overthrew the successful government of Porfirio Díaz.* B. Many Mexicans wanted to invest ...

### calculus

a) Let f(z) = z^2 and γ(t) = 1 + it^3, t ∈ [0,1]. i) Write out the contour integral ∫γ f(z)dz as an integral with respect to t. You do not need to evaluate this integral. ii) Evaluate the integral ∫0,1+i z^2dz iii) What is the relationship between ...

### Calculus

the grand canyon is 1600 meters deep at its deeoest point. a rock is dropped fromthe rim above this point. Express the height of the rock as a function T in seconds. how long will it take the rock to hit the canyon floor? H= 1600-1/2t^2 thats what i got as a function is that ...

### Grammar

Circle the nouns that can be used with the verbs on the right . Engine-consumption-dependence (reduce) Answer : consumption and dependence Solution-dependence-alternative (find) Answer:solution and dependence Resources-technology-stocks(deplete) Answer:Resources and technology...

### Chemistry

How many grams of dry NH4Cl need to be added to 2.10L of a 0.600M solution of ammonia,NH3 , to prepare a buffer solution that has a pH of 9.00? Kb for ammonia is 1.8x10^-5. I just wanted to make sure I dd this write, can you please check my work? Thank you!!!! I found the pKa ...

### Calculus - Damon

Find the line which passes through the point (0, 1/4) and is tangent to the curve y=x^3 at some point. So I found the derivative which is 3x^2. Let (a, a3) be the point of tangency. 3x^2 = (a3 - 1/4)/(a-0) I'm not sure how to solve for a. Yes, the point is (0,1/4) but it's not...

### Math

There are 20 question in a quiz. 5 marks will be given for a correct answer. 1 mark will be deducted for a blank answer and 3 marks will be deducted for a wrong answer. (a) Peter gives 2 blank answers and he gets 72 marks. Find the number of correct answers he get. (b) Is it ...

### English 10 Check

Below, you will find a list of sentences. After each sentence, select true if the topic of the statement is suitable to form the basis of a single persuasive paragraph. If the topic of the statement in your textbook is unsuitable for a single persuasive paragraph, select false...

### Physics/Math

In a pickup game of dorm shuffleboard, students crazed by final exams use a broom to propel a calculus book along the dorm hallway. If the 3.6 kg book is pushed from rest through a distance of 0.90 m by the horizontal 22 N force from the broom and then has a speed of 1.60 m/s...

### math

A bag soccer balls contains 8 balls with black design and 7 balls with red design with no other types of soccer balls. Coach graves reaches into the bag and randomly pulls out two soccer balls. please check my answer a) explain these events are either dependent or independent...

### Physics - Charges at an angle (check + help)

Three charged objects are located t the vertices of a right triangle. Charge A (5*10^-6) has Cartesian coordinates (0,4; Charge B (-5.0*10^-6) is at the origin; charge c (+4.0*10^-6) has coordinates (5,0), where the coordinates are in meters. What is the net force on each ...

### Check my physics

Would you mind checking one of my problems from my physics study guide? I know the answer and just want to make sure I am using the right formula. :) A 78-kg skydiver has a speed of 62 m/s at an altitude of 870 m above the ground. a. Determine the kinetic energy possessed by ...

### Can u check my answer? U.S History

"I consider the foundation of the Constitution as laid on this ground: That "all powers not delegated to the United States, by the Constitution, nor prohibited by it to the States, are reserved to the States or to the people." [10th Amendment] To take a single step beyond the ...

### accounting

On May 31, 2011, James Logan Company had a cash balance per books of $6,781.50. The bank statement from Farmers State Bank on that date showed a balance of $6,404.60. A comparison of the statement with the cash account revealed the following facts. The statement included a ...

### business

On May 31, 2011, James Logan Company had a cash balance per books of $6,781.50. The bank statement from Farmers State Bank on that date showed a balance of $6,404.60. A comparison of the statement with the cash account revealed the following facts. The statement included a ...

### math

On May 31, 2011, James Logan Company had a cash balance per books of $6,781.50. The bank statement from Farmers State Bank on that date showed a balance of $6,404.60. A comparison of the statement with the cash account revealed the following facts. The statement included a ...

### Chemistry

We have been getting numerous questions like this on assignments and I can't figure them out. Its like I know that there some way connected but I can't figure it out. This is for Chemistry in highschool and its likea review and so they are not going over it but I would still ...

### math,correction

Multiply. (x+2)(x-2) my answer is: x^2-4 Factor completely. 3(x-2)^2-3(x-2)-6 MY answer: 3(x-4)(x-1) Factor 9x(x-7y)-6(x-7y) My answer is: (9x-6)(x-7y) Divide: (x^3+2x^2+x+12)/(x+3) My anwer is: x^2-x+4 Looks OK!

### chem (Check)

The Question: Why must a calculated answear generally be rounded? My Answear: A calulated answear cannot be more precise than the least precise measurement from which it was calculated. I think your answer is ok but I think you are leaving out information that should be ...

### statistics

Does studying for an exam pay off? The number of hours studied, x, is compared with the exam grade received, y. x 7 7 5 5 7 y 95 90 75 85 95 (a) Complete the preliminary calculations: SS(x), SS(y), and SS(xy). Incorrect: Your answer is incorrect. . (SS(x)) Incorrect: Your ...

### Statistics

Does studying for an exam pay off? The number of hours studied, x, is compared with the exam grade received, y. x 7 7 5 5 7 y 95 90 75 85 95 (a) Complete the preliminary calculations: SS(x), SS(y), and SS(xy). Incorrect: Your answer is incorrect. . (SS(x)) Incorrect: Your ...

### Science

Type one and Type three survivorship curves indicate populations that are growing _______________. Please check your assigned reading and post your answer. We'll be glad to help you when we see your thoughts about this subject. fast? fast? http://www.britannica.com/eb/article-...

### Math

Please help me with this ASAP! I need help with this just checking my answers thanks 1. There are 14 blue marbles, 8red marbles, and 12 green marbles in a jar. What is the ratio of the total number of marbles to the number of red marbles? A. 24:8 B. 34:8 (my answer) C. 8:34 D...

### English

I still have a few questions to check. I really hope you can check them. Thank you! 1) Which metaphors does the poet use to address the urn in the first stanza? 2) How is the urn described? What figure of speech is used in line one and two “Heard melodies are sweet, but ...

### English

Please check my answers relating to predications. Our resolutions should begin at midnight on January 1. Answer: Implementing our resolutions should begin at midnight on January 1. The reason for the cat’s illness is because she was allergic to the dog. Answer: The reason ...

### Chemisty (Sig Figs)

Each of the following numbers was supposed to be rounded to two significant figures. For each one below, decide whether it was correctly rounded or not, and for those that were incorrectly rounded, correct them. (a) 3.149 e3 to 3.2 e3 Its incorrect but I don't know the correct...

### Calculus

I don't know limits fairly well. The problem is prove the limit using definition 6, lim x -> -3, 1 / (x+3)^4 = infinity. The books definition for definition 6 is, let f be a function defined on some open interval that contains a, except possibly at a itself, then lim x ->...

### Spanish-Please check

1.¿Comó te sentiste ayer? Yo sentí muy bien. 2. ¿Adonde fuiste ayer? Yo fui al cine. 3. ¿Adonde fue tu mama ayer? Mi mama fue a la tienda. 4. ¿Visitaste a tu familia la semana pasada? Sí, yo visité mi familia la semana pasada. 5. ¿Donde estudiaste ayer? Yo estudié al...

### programming logic

The Banking e-Teller system allows bank customers to perform ATM transactions from their cell or smart phones. BET will allow customers to check balances, make remote photo capture check deposits, and perform balance transfers to their checking or savings account. It is time ...

### English

(1) Are you doing any volunteer work? How about your friends? 1. Yes, I am. They are doing (some) volunteer work, too. 2. No, I'm not. They are not doing (any) volunteer work, either. (2) Do you do any volunteer work? How about your friends? 1. Yes, I do. They do (some) ...

### Math

Use absolute value to determine the distance between the two numbers. -3.5 and 4 1/4 |-3.5- 1 1/4| |-3.5- 9/4| |-3.5/1 - 9/4| |-14/4 - 9/4| |-23/4| 23/4 5.75 I got 5.75 as my answer. But why does my answer key show 7.75 units? I'm not sure what I did wrong. I've double checked...

### Chem Check Please!!!

1) Calculate the cell potential, at 25 C, based upon the overall reaction Zn2+(aq) + 2 Fe2+(aq) -> Zn(s) + 2 Fe3+(aq) if [Zn2+] = 1.50 x 10^-4 M, [Fe3+] = 0.0200 M, and [Fe2+] = 0.0100 M. The standard reduction potentials are as follows: Zn2+(aq) + 2 e– -> Zn(s...

### programming java language

For faster sorting of letters, the postal service encourages companies that send large volumes of mail to use bar code denoting the ZIP code (see figure below). Student XXXX PO Box 34689 Jeddah 21478 KSA There are full height frame bars on each side. The five encoded digits ...

### Chemistry. Please Check!

What would the coefficient be for the produced salt in a balanced chemical equation of this acid and base? HNO3 + Ca(OH)2 -->Ca(NO3)2 + H2O What would the coefficient be for the produced salt in a balanced chemical equation of this acid and base? H2SO4 + KOH -->K2SO4 + ...

### Check my physics answer

When should you express a vector along the x-axis as a negative vector? when its magnitude is less than 1 when the arrow representing the vector would point toward negative x when the arrow representing the vector would point toward positive x when its magnitude is greater ...

### calc

On January 1, 2013, at a price of x dollars, the demand for a certain product was D(x) = 300 x2 + 10px thousand units per month. t months after January 1, 2013, it is estimated that the price of the product will be x(t) = 3t4/3 +16 dollars. At what rate is the demand changing ...

### math

logan isn't 2 years older than Lindsey. Five years ago the sum of their ages was 30. Find Lindsey current age. X-5+2x-5=30. -1 + 0= 30. I don't think this right I tried I can't get the right answer. According to the common core the answer is supposed to be 19. Please help I ...

### Physics

A flat thin non-conducting ring has an inner radius R1 and an outer radius R2 . The disk is uniformly charged with charge per unit area σ(>0) . (a) What is the electric field at the center, P , of the ring? Express your answer in terms of the following variables, if ...

### physics

A mover pushes a couch a distance of 4 m to the top of a ramp into the back of a truck using 500 N of force. A) What is the work input of the mover? B) What is the mover’s power if the task takes 10s? C) If the mass of the couch is 100 kg and the back of the truck is 1.5 m ...

### Child Care

Which of the following statements about children and computers is incorrect? A. To be effective, a child's computer learning experiences must be planned and supervised. B. At a day care center, computer time should be scheduled like any other activity. C. During children's ...

### English

Let's review the previous lesson. What did we learn last time? There is fast food on almost every street corner in New York City. Can you answer my question? What do carts in New York City sell? They sell drinks, hotdogs, and pretzels. Good job. OK, open your books to page 66...

### Algebra

Why is first equation is x negative and in equations 2,3 & 4 answers are not negative and also sign changes? 1)Equation: x+y>1 Answer: y=-x+1 2)Equation: x-y>5 Answer: y<x-5 3)Equation: 3x-y<2 Answer: y>3x-2 Sign is greater than or equal to in the following ...

### Science 8th grade please check (revised answer

Mr. Jones went to his doctor because for the past few days he has been having frequent burning uriation. The doctor preformed a urialysis. This was done by have the patient void into a collection container. The urine was cloudy and yellow in color. There was an unusual ammonia...

### bio (CHECK ANSWERS)

Modern fishing practices threaten biodiversity primarily through the? A)accidental capture of unwanted species B)physical destruction of marine habitats. C)removal of community food supplies D)chemical poisoning of the water I think the answer is c but not sure 2. Which of the...

### chemistry

Suppose you are asked to find the area of a rectangle that is 2.1-cm \rm cm wide by 5.6-cm \rm cm long. Your calculator answer would be 11.76 cm 2 \rm cm^2 . Now suppose you are asked to enter the answer to two significant figures. (Note that if you do not round your answer to...

### Calculus

Hi! My question is: Given that f is a function defined by f(x) = (2x - 2) / (x^2 +x - 2) a) For what values of x is f(x) discontinuous? b) At each point of discontinuity found in part a, determine whether f(x) has a limit and, if so give the value of the limit. c) write the ...

### Calculus

Integrate: x/(9+x^4)dx

### Calculus

lim--h>0 f(x+h)- f(x/h

### Calculus

If a, b, and c are digits for which 7 a 2 -4 8 b =========

### Calculus

If a, b, and c are digits for which 7 a 2 -4 8 b =========

### Calculus

What is the derivative of e^cx ?

### Calculus

integrate: (x^2 + 1)^k dx

### Calculus

What is the derivative of t^3/3

### Calculus

The derivative of f of x f(x) = x^3 + 19 ; x = 8

### calculus

Integrate: dx/(2x^2 + 4x + 7)

### calculus

derivatives. f(x)=(1/-7x^12) f'(2)=? f'(-1)=?

### calculus

if dy/dx= (1+lnx)y and if y=1 when x=1, then y=

### calculus

how do you integrate x^2/(9+x^6)

### calculus

how do you integrate x^2/(9+x^6)

### calculus

cos(xy)+y=2

### Calculus- please help

Let f(t)=(t^2+3t+8)(2t^2+6). (a) f'(t)= (b) f'(4)=

### pre-calculus

3(4^x)-2^(x+2) = -1

### Calculus

Find (fg)'(1) if f(1)=1, g(1)=2,f'(1)=3, g'(1)=-3

### calculus

(f o g)(3x^2) << question ...f=4x-10 g=2x^2

### Calculus

solve:(x^4)-(4x^2)+3=0

### calculus

how to simplify: ((9^x * 3^2 * (1/3^-x)) - 27^x ) / 3^(3x) * 9

### calculus

If f(x) = x2 / (4 + x), find f ''(5).

### Calculus

If d/dx(f(3x^5))=9x^4 Find f'(x)

### calculus

what is the derivative of 1/x??

### Calculus

differentiate y = (x + 2) / (x^3 + x - 2)

### Calculus

how do I know if the series ln(n)/(2n) is DV or CV?

### pre calculus

27^8x-3=(1/81)^8x-4 x=?

### calculus

how do you integrate dx/(x^2*(x^2+4)^1/2)

### calculus

what is the derivative of 4(x^2-1)^-1/2

### calculus

what is derivative of (1-2x)^-1? is it -1/(1-2x)^2 ?

### Calculus

What is the lim(x-3/x^3-27) x->3

### Calculus

f(t)=5^x sechx f'(x)=?

### calculus

solve 2^3^x = 4.2^5^x

### calculus

Differentiate y = xe^x Thank you!

### calculus

differentiate y = ln(e^x + e^-x)

### Calculus

what is the derivative of If y = x^m and y'= mx^(m-1) y" = ?

### Calculus

If xy=4 and dy/dy=3 then find dx/dt when x=4?

### Calculus

f(x)=(x+3), h(x)=(3x-5) Find g(f(x))=h

### Calculus

F(x)=5e^x - 10 / 24e^x + 12 f^(-1)(x)=? a=? b=?

### Calculus

What's the derivative of (x-1)(x-7)^3+10?

### calculus

find dy/dx of y^3-xy=-1

### calculus

find f(x) f'(x) = (x^2-1)/x^(-1)

### calculus

find y' of x^2/3=y^2/3=1

### Calculus

f(x) = 6e^(-5x) ln(x), find f'(3)?

### Calculus

Find y' and y'' y=X^3/(X^2-1)

### calculus

what is the diferential of (dy/dx)=2^x?

### calculus

differential of (dy/dx)=y/x

### calculus

integrate (2/3x^5)

### Calculus

How do I find the f'(x) of f(x)=((8x+3)/(9x-) 5)^(1/2)?

### Calculus

Let f(x)=(x+7)/(x+5). inverse f-1(-3)=...

### Calculus

Let f(x) = 3(x^6)lnx. f'(x)= ...

### Calculus

From 2 to 3, integrate ((x^3)+5)dx/x.