# Calculus (Answer Check)

86,499 results, page 12

### pre calculus

The base of an Isosceles triangle is half as long as the two equal sides. Write the area of the triangle as a function of the length of the base. the answer is: A=a^2times the square root of 15 ------------------------------ 4 How did they get this answer? Thanks!

### calculus

correct me if I'm wrong please. 1. What is the value of Lim 2x+3/4x-5 when x>00 (infinity?) a.-3/5 b.0 c.1/2 <.. my answer d.1 2. An object moves according to the law s = t^2 + 5t - 8. What is the average rate of change of s with respect to t in the interval t to (t + ...

### Chemistry/Calculus

I have a question about how to plug in numbers on my calculator (TI-30XIIS) to get an answer. How would I put in my calculator... ln 1.00X 10-2 mol/L /1.65 X 10-2 mol/L to get-0.501? I keep getting the wrong answer...

### calculus

is my answer to this question correct A spherical balloon is losing air at the rate of 2 cubic inches per minute. How fast is the radius of the ballon shrinking when the radius is 8 inches. Answer= .0024

### Math

Hello I did my math homework, but I need someone to check if I did it right or not. 1. A = z>=4 B = z<7 Write A or B and A and B using interval notation Answer: A or B = (-infinity, infinity) A and B = [4,7) 2. Write the algebraic expression for the following: 8 is less ...

### Calculus

Can someone show how to solve this problem Two vertical towers of heights 60 ft and 80 ft stand on level ground, with their bases 100 ft apart. A cable that is stretched from the top of one pole to some point on the ground between the poles, and then to the top of the other ...

### Calculus

The function f is continuous on the closed interval [1,7] and has values in the table below x f(x) 1 10 4 30 6 40 7 20 Usinf the subintervals [1,4] [4,6] [6,7] what is the trapezoidal apporx. of the integral from 1 to 7 of f(x)dx? The answer: 160 I tried doing each interval as...

I'm having trouble with this question on arc length: y=lnx, (squareroot)3/3 greater than or equal to x less than or equal to 1 It sounds as if you want the length of the y = ln x curve from x = sqrt(3)/3 (0.57735..) to 1. The formula for the arc length of a line y(x) is Length...

### Calculus - Limits

lim x--> 3 (3 - x)/ (x^2 - 9) I know the answer is -1/6, but I can't figure out how to get there.

### Pre-Calculus

tan^2x-sec^2x=? Can you show me how to answer this?

### Calculus

Find a formula for the derivatives of the function m(x)=1/(x+1) IS the answer -1/(x+h)(x+h+1)

### Calculus

Find the derivative. g(x)=cos(x^6) Isn't the answer -6xsin(x^6)

### Calculus

limit of (10^n)/(n!) as n->infinity The answer is zero. Can you prove it?

### calculus

d/dx of ln(t)/t i believe the answer is 1-ln(t)/(t)^2 but i just want to make sure.

### calculus

Question: what is the derivative of f(x)=x^2*e^x Would the answer simply be 2x+e^x?

### calculus

Use the demoivre's theorem to find the answer? (1+i)^8

### Calculus

Simplify difference quotients. 1/(1+h)-1/h I got 1-1-h/h but the answer is -1/(1+h)

### Calculus

For which point(s) on the graph of f(x)=5x/(x+2) is the slope of the tangent 2/5? a) (-3,15) b) (7, 35/9) c) (3,3) and (-7,7) d) (24, 60/13) Answer is C?

### college Calculus Help!

If f(x)= ∫(21,x) t^5 dt then f'(x). my answer was 1/6 (21^6-x^6) it said it's wrong.

### Calculus

Find the dot product of (u+v)*w u=-1,3 v=2,4 w=2,-5 Answer choices: A:37 B:-37 C:-29 D:-33 E:29 F:9

### Calculus

Find the critical numbers of y=x(4-x)^1/2. The answer is x=8/3 but I got x=7/2.

### brief calculus

x/(x − 6)^2 I get ln(x-6)- 6/(x-6)+ C but it isn't correct, what should the answer be?

### Calculus

Differentiate. cos^3x My answer: -3cos^2x sin^2x

### college pre-calculus

simplify: (y+1)(y/1-y^2) which answer: A. Y/y-1 B. y/1-y C. y+1/y-1 D. -1 this is what i got y+1/1* Y/1-y^2=-1

### Calculus Help

Evaluate lim x-->25 5 - square root x / x - 25 I don't get how the answer is -1/10

### algerbra

could you please double check my work question:find the roots of the equation 2x^2+8x=12 by completing the square. leave answer in simplest radical form. work and answer: c=(b/2)^2 c(4/2)^2=4 2x^2 +8x=12 divide everything by 2 x^2 + 4x=6 x^2+4x+4=10 (x+2)(x+2) square root of (...

### Calculus Answer Check

Rocket A has a positive velocity v(t) after being launched upward from an initial height of 0 feet at t=0 seconds. The velocity of the rocket is recorded for certain values of t over the interval 0 <= t <= 80 seconds, as shown below. t(seconds),v(t)(ft/sec) = (0,5),(10,...

### Anatomy and Physiology

Hello! Thanks for checking my question out! ____ 7. The bones of the extremities are parts of the (1 point) a) appendicular skeleton. b) axial skeleton. c) long bone group. d) medial skeleton. My Answer: A Could someone please check my answer? Thanks! - Da Fash

### Chenistry check

Can someone check my answer? The question is: In order for the reaction 2Al(s) + 6HCl(aq)-> 2AlCl3(aq) + 3H2(g) to occur, which of the following must be true? a. Al must be above Cl on the activity series. b. Al must be above H on the activity series. c. Heat must be ...

### calculus

Write the equation of the tangent line to the curve at the indicated point. As a check, graph both the function and the tangent line. f(x) = x7 − 7 at x = −1 7 x7

### Calculus

Let f(x)=αx^2+βx+γ be a quadratic function, so α≠0, and let I=[a,b]. a) Check f satisfies the hypothesis of the Mean Value Theorem. b)Show that the number c ∈ (a,b) in the Mean Value Theorem is the midpoint of the interval I.

### Algebra

How do I solve this? The perimeter of a rectangular writing pad is 28 inches. The length is 1 inch less than twice the width. Find the width. Show all work! Translate your English into Math <The length is 1 inch less than twice the width> or L = 2W - 1 <Perimeter is ...

### college algebra

can someone check my answer for me please! 5x+6y=18 solve for y 6y=18-5 y=3-5/6x

### math

can someone check my answer Graph by first solving for y. x + 2y = 8 x-x+2y=8-x 2y=8-x 2y/2=8/2-x y=4-x y=4-x/2 y=4-1/2x

### math

can someone check my work? divid t^11/ t^3 is the answer t^3r2

### Algebra II (check)

Assume that no denominator equals 0. 5x^3(7x)^2 = 5*7*7+x^3+x^2 = 245x^5(answer)

### Math 116 algebra please check

Evaluate x+y/6 for x =57 and y=3 the answer is x+y/6=10

### Math problem check

Simplify: (2/a + 6/b) / (8/ab + 4/a^2) I have the answer as a(3a+b)/(4a+2b) Is that correct?

### Math Check

Solve: x^-2 - x^-1= 5/4 I have the answer as (5+/- sqrt29)/2 Is this right?

### check my answers pplz

1. simplify 6(a+3b)-4(2b-5a) is the answer 26a+10b

### DrBob22

Can you check my answer in the last boiling point topic I posted? Thanks.

### TO: Mrs Sue...is my answer below right?

can u check it plz

### intermediate algebra-can somebody check my answer

Evaluate the expression m^2+93+7 when m=-4 -4^2+9*(-4)+7 does it = -13

### Geography check

Where is Emi Koussi located? The answer is Chad?

### Math Can anyone check my answer please

4z-24/6-z=-z,-4 <<<this is in simplifield form am I right???

### Math Can anyone check my answer please

4z-24/6-z=-z,-4 <<<this is in simplifield form am I right???

### to ms.sue

now i get it .later ill post you back to check the answer,okay?

### Algebra 1B--check

Solve for y in the following system of equations. x + 4y = -38 -x - 6y = 58 My answer 1.) -10 2.) 6 3.) 12 4.) 10

### Math help

Solve this equation and check answer Fraction→n/56=8

### Math help

Solve this equation and check answer Fraction→n/56=8

### Algebra 1 (Reiny)

Factor each polynomial by grouping. Check your answer. 1. 2r^2 - 6r + 12 - 4r

### Algebra 1 Answer Check

Factor this trinomial. -16x + 20x + 6 A: -2(4x + 1)(2x - 3)

### Algebra

Explain how you could check the answer to a division question in which there is a remainder

### Algebra 2 Answer Check (Reiny)

Compress f(x) = |2x| - 3 vertically by a factor of 1/4. A: g(x) = |8x| - 3

### algebra (check work)

evaluate the expression when a = , b = -3, c = -12 |a + b + c| = 22 is 22 the correct answer?

### U.S. History (Answer Check)

What act triggered violence in Kansas?

### Mathematics

what is the slope of the line that goes through (6 ,5) and (3 ,1)? 3/4 -3/4•• 4/3 -4/3 Check my answer

### Math help ;-;

Solve the equation. Check your answer. 5x-4(x+9)=2x-3 can anyone help me how to do this plz ;-; sorry

### MATH

solving rational equations solve check your answer 5/3x+1=2

### Algebra (Answer Check)

Did I do this right? Solve the following inequality. -5 > -5 - 3w (-5 + 5) > (-5 + 5) - 3w 0 > 0 - 3w (0 / 3w) > 0 (-3w / -3) 0 < w w > 0

### Algebra (Answer Check)

Am I correct? Solve the following inequality. f + 2 1/2 < -2 f (2 1/2 - 2 1/2) < (-2 - 2 1/2) f < -4 1/2

### Music

In homophonic textures , how many melodies are there 1 2* 3 4 Please check my answer

### Pre-Calculus

Solve. Express your answer as exact roots. (s+6)^2 = 3/4 Sq root (s+6)^2 = +-sq root 3/4 (s+6) = sq root 3/ 2 s = -6 +- sq root 3 ----------------- 2 (The answer according to the textbook is (-12 +- sq root 3)/2. What error have I made?) Thank you

### math

Ex 3: 4x-7<2x+5 4x-7-2x<2x-2x+5 2x-7<5 2x-7+7<5+7 2x<12 2x/2<12/2 x< 6 Note I did not switch the order of the inequality here since I divided by a positive number. Multiplying or dividing by a positive number does not change the order of the inequality. So...

### English

Hi! 3. Choose the answer that best matches the word in quotation marks. John offered his wife a red rose as a sign of "appeasement" for their earlier disagreement. This means he wants (1 point) a) to demonstrate the disagreement is unresolved. b) to please her by giving her ...

### math/algebra

can someone check my answer: 3ã486 my answer is 27ã6 if not show me where I went wrong please you are right. (did you see my post to you earlier on how to create square root sign? Does it not work for you?) 3√486 = 3√81*√6 =27√6

Solve the equation of the interval (0, 2pi) cosx=sinx I squared both sides to get :cos²x=sin²x Then using tri indentites I came up with cos²x=1-cos²x Ended up with 2cos²x=1 Would the answer be cos²x=1/2???

### geography

Can you check these for me? 1. What is the name of the country completely surrounded by South Africa? My answer is Lesotho. 2. Which state capital is farther north, Utah's or Illinois? How do you know? My answer is Illinois's, because it is above the 40 degree N line and Utah'...

### math (check answer plz)

The probability of a certain hockey player making a goal after hitting a slap shot is 1/5 how many successful slap shots would you expect her to make after 120 attempts? . . . . . . . . . . . . . My answer: 24

### Calculus 2 correction

I just wanted to see if my answer if correct the integral is: ∫(7x^3 + 2x - 3) / (x^2 + 2) when I do a polynomial division I get: ∫ 7x ((-12x - 3)/(x^2 + 2)) dx so then I use u = x^2 + 2 du = 2x dx 1/2 du = x dx = ∫7x - 12/2∫du/u - 3/1∫1/u = (7x^2...

### Astronomy

Hey There! Thank you for checking my question! ____ 8. The stars do not appear in the same place every night due to Earth’s (1 point) a) solar day. b) orbital motion around the sun. c) right ascension. d) seasonal change. My Answer: B Could someone please check my answer? ...

### education

Children will generally select equipment based on: a.their prior success with the equipment. B.the size of the equipment c.the brightness and boldness of the equipment's colors d. The opportunity for challenge presented by the equipment. My answer is D. Could someone please ...

### English

Which of the following is a good rule to follow when proofreading an essay? A. Scan the essay twice, once for organization and once for surface errors. B. Ask your best friend to critique your essay. C. Use the computer's spell-check and grammar-check functions to be sure you ...

1-Yo tengo (tantas/ tantos) praticas como mi hermano answer: tantos 2- Juan toma ( tantas/ tantos) lecciones de artes marciales como Carlos. answer:tantos 3- Elena tiene( tantas/ tantos) pasatiemptos como Angelica. answer:tantas 4_ Camilo tiene(tanto/tanta) interes en el ...

### biology /check please

1-What phase are daughter cells in as a result of mitosis? -Anaphase 2- During what phase of mitosis do centromeres divide and the chromosone-mes move toward their respective poles? -prophase 3- Wchich phase of mitosis is the last phase that chromatids are together? -anaphase ...

### Precalculus

Help with these questions help with these questions~ Thank you 1. Determine the interval(s) on which x^2 + 2x -3>0 a)x<-3, x>1 b)-3<x<1 c)x<-3, -3<x<1, x>1 d) x>1 Answer is D, x>1 --------------------------------------- 2. Determine when the ...

### Math - check answer

Given s = 10 - 10t2 + 45t3, determine the velocity when t = 1 s. velocity in m/s = My Answer S'= 0-20t + 135t^2 S'(1) = -20+135 = 115 velocity in m/s = 115 Can you please confirm this is correct. Thanks!

### science- cell structure

An inner and an outer membrane are characteristic of which organelle? my answer: Mitochondria and chloroplasts What is the nucleus? my answer- nucleus is a cell structure that contains hereditary information What is the nucleiod? my answer: the nucleiod is like the nucleus. ...

### CAlculus

The graph of the derivative, f '(x), is given. Determine the x-coordinates of all points of inflection of f(x), if any. (Assume that f(x) is defined and continuous everywhere in [-3, 3]. If there are more answer blanks than inflection points, enter NONE in any remaining spaces...

### Where are you Jasmine20, I answered your Homework

Please check your homework answer At: Name:Tanisha Subject: To:Jasmine20 I posted the answer for GURU DEFINITION. HOPE IT HELPS!!! I think jasmine20 is not on jiskha.

### mixed #'s

Find n. n+n=8 1/2 what does n =??? n+n = 2n <~~right? Therefore, you should be able to rephrase it this way: 2n = 8 1/2 Now divide each side by 2, and you'll have your answer. Yes?? I'll ask a math teacher to double-check my thoughts. =) 2 n = 8 1/2 n = 8 1/2 divided by 2 ...

### math (check my answer?)

Find the equation of a sine function that has a vertical displacement 2 units down, a horizontal phase shift 60 degrees to the right, a period of 30 degrees, a reflection in the y-axis and an amplitude of 3. My attempt at an answer: Y = 3 sin (30x- 60) -2 Can someone tell me ...

### Science

2. Perform this operation and report the answer to the correct number of significant figures: What is the mass of a cube of aluminum that is 4.0 cm on each edge? The density of aluminum is 2.7 g/cm3. Show all calculations leading to an answer. (I think I solved this correctly ...

### calculus

Verify the given linear approximation at a = 0. Then determine the values of x for which the linear approximation is accurate to within 0.1. (Enter your answer using interval notation. Round your answer to two decimal places.) tan x ≈ x

### French

Can you please check these thanks. Directions: Identify each person described below (we are in the sports chapter by the way) Part 1 1. Un garçon ou une fille qui joue -------------. Answer: un joueur ou une joueuse 2. Un joueur qui garde le but --------------. Answer: le ...

### Spanish;CHECK?

State whether the command is formal ("Ud.") or informal ("tú"). Come la sopa. Anwser: Formal Hable más despacio. Anwser: Formal No compres más ropa. Answer: Formal Beba m�s agua. Answer: Informal No vengas tarde. Answer: Informal

### Chemistry

please check my answers for the following questions. 1) when a measurement that has six significant digits is divided by a measurement that has three significant digits, how many significant digits should the answer have? ANSWER: 2 2) How many hydrogen atoms are in 5 molecules...

### calculus

At the indicated point for the function, find the following. A graphing utility's numerical derivative feature can be used to check your work. y = (x3 + 2x)3 at x = 3 (a) Find the slope of the tangent line. (b) Find the instantaneous rate of change of the function.