85,792 results, page 91

### Calculus

Given the vectors u = <−3,7> and v = <5,1>, find -½ u. A. <-1,-4> B. <-4,-1> C. <3/2,-7/2> D. <-3/2,7/2>

### Calculus

Given the vectors u = <−3, 7> and v = <5,1>, find 3u + 2v.

### Calculus

Given: u <-1, 7> and v <4, -3> What is the measure of the angle between them?

### Calculus

How many critical points does the function f(x) = e^x - x^3 have?

### Calculus

Let F(x)=f(x^4) and G(x)=(f(x))^4. You also know that a^3=15, f(a)=2, f′(a)=4, f′(a^4)=12. Find F′(a) and G′(a). I don't even know where to begin.

### Differential calculus

Sketch the graph of the curve y=(x-2)(x+1)(x+3)

### Calculus

Find dz/dy for the following : xln(1-2y) = zsin((x^2)z)-3y+z

### Calculus

Determine the relative extremum for the function , f(x,y)=((x^2)+(y^2))(e^-x)

### Pre-Calculus

given: ((x-2)^2/9)+((y-4^2/16)=1 what is the major axis?

### Calculus

Given: r = 4/(-2-6sinθ) What is the eccentricity of the function? A. 2 B. -2 C. 3 D. -3

### Calculus 1

In the problem, x and y are differentiable functions of t. Find dx/dt when x = 3, y = 4, and dy/dt= 2. x^2 + y2^2= 25

### Calculus 1

In the problem, x and y are differentiable functions of t. Find dx/dt when x = 3, y = 4, and dy/dt= 2. x^2 + y2^2= 25

### Calculus 1

In the problem, x and y are differentiable functions of t. Find dx/dt when x = 3, y = 4, and dy/dt= 2. x^2 + y2^2= 25

### Calculus

For what value of k will x+k/x have a relative max at x=-2

### Calculus

If u,v, and w are nonzero differentiable functions, then the derivative of uv/w is what?

### calculus

Find the local linear approximation of f(x) = e^(3x) at x = 1. y = e^3 y = e^(3(x − 1)) y = 3e^(3)(x − 1) y = 3e^(3)x − 2e^3

### Pre-Calculus

Find P + 1 if Pk = 7 + 13 + 19 + ...+[6(k - 1)+1] + (6k + 1) (the k+1 and k in front of the P are subscripts) A. 7 + 13 + 19 + …+[6(k - 1) + 1] + (6k + 1) + [6(k + 1) + 1] B. 8 + 14 + 20 + …+[7(k - 1) + 1] + (7k + 1) C. 7 + 13 + 19 + …+(6k + 1) D. 7 + 13 + 19 + ...+[6(k...

### Calculus

Find the second difference for the sequence. 7, 6, 7, 10, 15, 22, …. A.1 B.2 C.3 D.5

### Calculus

Find a quadratic model for the sequence. -4, -4, -3, -1, 2 A.y = 0.5x^2 - 0.5x - 4 B.y = 0.5x^2 - 1.5x - 3 C.y = 4.5x^2 - 21.5x+21 D.y = -4.5x^2 + 21.4x - 21

### calculus!

use the definition of derivative to find d/dx(1/(3-x))

### calculus

solve for dy/dx=(x^2+y^2)/xy by substitution. Plz help step

### calculus

(2y-1)dy/dx=(3x^2+1) given that x=1 when y=2 plz show step thanks

evaluate the table and find d/dx [g[f(2x)]] at x=1 f(x) 6,1,6,2 f'(x) 1,2,5,7 g(x) 1,4,4,3 g'(x) 4,5,5,-4

### Calculus

y = 2 cos(5πx) .... whats the period?

### Calculus

Compute F'(-4) where F(x) = x^3 + X^2 (using the definition of the derivative)

### calculus

limx--->3- 5/x-3 I think it is -inf but I don't know how to prove it

### Calculus

Solve the initial value problem. 7x^6-3x^2+5 and u = 1 when x = 1. Is this x^7 - x^3 + 5x - 4?

### calculus

Find the centroid (¯ x, ¯ y) of the region bounded by: y = 6x^2+7x, y = 0, x = 0, and x = 7

### Calculus (related rates)

Find dy/dt when y = 2x2 + 2x + 4 and dx/dt = 14 when x = 7.

### Calculus (related rates)

Find dy/dt where y = 2 sqrt(x)-4 and dx/dt = 9 when x = 4.

### calculus

Evaluate the integral. from 0 to π/2 sin^3(θ)cos^5(θ) dθ

### Calculus

If y′= x(1+ y) and y > -1 , then y = The differential equation dy/dx=y/x^2 has a solution given by:

### Calculus

If y′= x(1+ y) and y > -1 , then y = The differential equation dy/dx=y/x^2 has a solution given by:

### Calculus

Consider the function f(x)= x^3+5 sqrt(x) Let F(x) be the antiderrivative of f(x) with F(10=-9

### Calculus

Determine the remainder for Sn where n=5 or n=9 for the following series. ∑n=1 to ∞ (n^2+1)/(n^4) S5= R5= S9= R9=

### Pre-calculus

Can someone help me with this equation: y = (2*10^(-44))*(e^(0.055x))?

### Calculus

At what point is the function y=csc(2x) continuous?

### calculus

Find the interval, I, of convergence of the series n=0 [((-1)^n)(x-5)^n]/(3n+1)

### Calculus

How do we integrate [(cosx)^2(nx)(sin(nx))]/[a-(cos(nx))] dx?

### calculus

Find the derivatives of the following function: i)y=-3x^-3 +2x^-2 + x-2

### Visual Basic (Computer Programming)

ALGORITHM EXERCISES 1. Wilma Peterson is paid by the hour. She would like a program that both calculates and displays her weekly gross pay. For this exercise, you do not need to worry about overtime pay, as Wilma never works more than 40 hours in a week. Desk-check your ...

### Calculus-Rationalizing Denominator

I am very confused on how to rationalize a denominator, it just gets harder and harder.*will be using the V symbol again as a square root symbol.* I get how to rationalize something simple as V2/V7, I would get V14/7 as the answer, but I get confused on how to solve 1/V6 +2, ...

### Math

2. Rename .709 as a percent. a. 709% b. 70.9% * c. 79% d. 7.09% 4. Alice plays basketball. In one game she shoots 21 free throws and makes 81.25% of them. Estimate how many free throws she makes. a. about 16 b. about 2 c. about 20 d. about 14 5. Estimate 48% of \$20.00. a. ...

### Physical Science

Hello! Thanks for checking my question out! ____ 4. Water is a compound because it (1 point) a) can be broken down into simpler substances. b) always has two hydrogen atoms for each oxygen atom. c) is made of water atoms joined together. d) both the first and second choices ...

### Social Studies (please check Ms. Sue)

Please check this. Thanks! 1. After World War II, what type of laws did Congress concentrate on passing? a. civil rights*** b. homeland defense c. international alliances d. taxes 2. Which of the following tactics was NOT used by civil rights groups? a. organizing sit-ins b. ...

### Calculus

The tank shown is full of water. Given that water weighs 62.5 lb/ft3, find the work required to pump the water out of the tank. The tank shown is a hemisphere with r = 5 ft. The water is to be pumped out at the top. First I solved for ri, ri / (5 - xi) = 5 / 5 ri = 5 - xi Vi...

### calculus

Find complete length of curve r=a sin^3(theta/3). I have gone thus- (theta written as t) r^2= a^2 sin^6 t/3 and (dr/dt)^2=a^2 sin^4(t/3)cos^2(t/3) s=Int Sqrt[a^2 sin^6 t/3+a^2 sin^4(t/3)cos^2(t/3)]dt =a Int Sqrt[sin^4(t/3){(sin^2(t/3)+cos^2(t/3)}]dt=a Int Sqrt[sin^4(t/3)dt =a ...

### accounting

CHOI ENTERPRISES Inv. No. Check Date Description Name or Date No. Terms Amount Dec. 16 Merchandise sold (cost \$4,600) Hanna Seppa 916 2/10, n/30 \$7,700 17 Received credit memo on returned merch. Funk Company Dec. 15 1,040 17 Purchased office supplies KK's Supply Company Dec. ...

### algebra can somecheck my answers

please check my answer thank you Write the phrase “the quotient of 3 more than a number, and 3 less than that same number. “ (x+3/(x-3) . It is estimated that the Earth is losing 4000 species of plants and animals every year. If S represents the number of species living ...

### english

Could someone check mty work? Which of the following would not be a good strategy for delivering a speech? Make sure your presentation is running properly Start talking over the audience to quiet them down (anser) Use correct grammar and well formed sentences Look directly at ...

### Grammar

Can someone please help me check these for me.And help me correct them the correct way. I'LL APPRECIATED YOUR HELP :) I have to rewrite the sentences under the grammar rule of "Punctuating Sentences" if they need no change i have to write no change. (1) The goose bit the ...

### math?

Give the answer to the following calculation with the correct number of significant digits. Report your answer in scientific notation. (6.17 x 10-1 + 4.9 x 10-2) x (3.95 x 10-2 + 6.454 x 10-3) i know how to solve for the answer, i just don't know the correct number of sig figs...

### trig

Is the answer to this problem correct? I'm not sure and I want to make sure I do well on the test. Evaluate the following logarithms given log 4/log a = .321 The answer my teacher gave me was 0.963. What is the reasoning behind the answer?

### Chemistry

I think I have the answer to this question but need some help! Display the final answer in correct scientific notation and show correct number of significant figures in the final answer: 6.0223010000 x 10-24 x 2.222090001 x 10-30

### Algebra

I need to know if I need to further reduce my answer or if I leave it the way I have it. I have the original problem and then my answer. -b +or- sqrt b^2=4ac/2a answer x= -1/2 +or- 1/10

### Algebra

I need to know if I need to further reduce my answer or if I leave it the way I have it. I have the original problem and then my answer. -b +or- sqrt b^2=4ac/2a answer x= -1/2 +or- 1/10

### Algebra 2

I need help, and I can't find the answer. Can you explain how to do this please? I don't want the answer only, I need to know the answer, and how to find it. Thank you!! 9. What is the equation of the absolute value function? (1 point) y = 6|x + 2| –2 y = 6|–x – 2| + 2 y...

### Math

So this is a math quiz I took a few months ago and they said I can redo it, but I have to explain why the correct answer is correct... And idk. Which equation represents 15 more than r is 61? The answer is r + 15 = 61 but idk why? What is the value of 4^2 -2 (3 x 5 + 1) The ...

### math

A new software company wants to start selling DVDs with their product. The manager notices that when the price for a DVD is 20 dollars, the company sells 139 units per week. When the price is 34 dollars, the number of DVDs sold decreases to 91 units per week. Answer the ...

### math

A new software company wants to start selling DVDs with their product. The manager notices that when the price for a DVD is 20 dollars, the company sells 139 units per week. When the price is 34 dollars, the number of DVDs sold decreases to 91 units per week. Answer the ...

### math

A new software company wants to start selling DVDs with their product. The manager notices that when the price for a DVD is 20 dollars, the company sells 139 units per week. When the price is 34 dollars, the number of DVDs sold decreases to 91 units per week. Answer the ...

### math correction

solve: x -8 = 4 + 8 +8 x = 12 my answer is x = 12 solve: 80 = 10x -- --- 10 10 8 = x my answer is x =8 solve: 3x= -12 -- --- 3 3 x = -4 my answer is x = -4 Solve: 12 -3x = 9 -12 -12 -3x = -3 --- --- -3 -3 x = 1 my answer is x = 1 ok on all of them.

### math check my answer ?

What is the range of f(x)=−3x−1? the set of real numbers less than 0 the set of real numbers greater than 0 the set of real numbers greater than −1 the set of real numbers less than −1 <my choice

Hi, Im learning about polymers. I did a lab to make slime where I mixed PVA glue & water. I then added borax to some water in another container, and the poured off the water from the wet borax. I then added the borax to the glue/water solution. I have to make a procedure that ...

(TCO 4) State court jurisdiction can be established in all of the following ways EXCEPT: a)when the defendant is a resident of the state, a summons may be served at that residence. b)cases involving more than \$75,000 where the plaintiff and the defendant are citizens of ...

### Physics

The patient in the figure below is to receive an intravenous injection of medication. In order to work properly, the pressure of fluid containing the medication must be 108 kPa at the injection point. (a) If the fluid has a density of 1024 kg/m3, find the height at which the ...

A 2.00 ml sample of an aqueous solution of hydrogen peroxide, H2O2 (aq) is treated with an excess of Kl (aq). The liberated I2 requires 12.40 mL of 0.1025 M Na2S2O3, for its titration. Is the H2O2 up to the full strength (3% H2O2 by mass) as an antiseptic solution? Assume the ...

### Calculus

I have two problems that I can't figure out for my test review... 1. Productivity: Because a new employee must learn an assigned task, production will increase with time. Suppose that for the average new employee, the rate of performance is given by dN/dt=1/2?(t+1) where N is ...

### Algebra 1B Radical expressions & data analysis

1. Simplify 2/√5 A. 2/√5 B. √10 C. √10/5 D. 2√10/5 *** My answer 2. Simplify -11√112 A. -44√7 B. -176 √7 C. -27 √7 D. 4√7 *** My answer 3. Simplify 17√17 -9 √17 A. 8 *** My answer B. 8√17 C. 26√...

### linear algebra- check question

I just want to make sure my reasoning is correct. Let A be a 7X3 matrix whose rank is 3 a)are the rows of A linearly dependent or independent? I said dependent because a matrix whose rank is 3 means the row rank is 3, but if there are 7 rows then they have to be dependent on ...

I am given a question where I have to state which combination of electrodes will result in the greatest voltage and which will result in the lowest voltage. The metals given are Zinc, Copper, Silver and Hydrogen I think that silver and copper would give the greatest voltage ...

### Chem Check

Can someone verify my answers please? convert the folowing into a pressure reading expressed in torr A. 1.25atm * 760torr/1.0atm = 950. torr B. 2.48 x 10^-3 atm * 760torr/1.0atm = 1.88 torr C. 4.75 x 10^4 atm* 760torr/1.0atm = 3.61 x 10^7 torr D. 7.60 x 10^6atm * 760torr/1....

### Dental Questions Check Help Please!!!

1)Each state has a dental board of examiners responsible for enforcing that particular state's Dental Practices Act (DPA). The DPA contains similar requirements for dentist conduct. Which of the following is not covered by the DPA? A. Americans with Disabilities Act (ADA) B. ...

### World History Answer Check (Ms.

Why does Plato believe that philosophers would make the best rulers? What men would make poor ruler? A: Plato believe that philosophers would make the best rulers because, according to Plato, they have knowledge of truth that others do not and only they can make crucial ...

### math-marginal analyisis

Just need someone to double check this problem. I just don't feel comfortable with my answer. An enviromental study of a certain communtiy suggests that t years from now, the average level of carbon monoxide in the air will be Q(t)=0.05t^2+0.01t+3.4 parts per million. (Read as...

### Honors Geometry

You work for a fencing company. A customer called, wanting to fence in his 1,320 square-foot rectangular garden. He ordered 148 feet of fencing, but you forgot to ask him for the width and length of the garden (these dimensions will determine some of the details of the order, ...

### calculus II

(A) 2 students are sharing a loaf of bread. Student A eats half of the loaf, then student B eats half of what remains, then student A eats half of what remains, and so on. How much of the loaf will each student eat? (B) 2 students are sharing a loaf of bread. Student A eats 2/...

### Physics

A sphere of radius R has inhomogeneous charge distribution on its surface. Its surface charge density is σ = σ0 cos θ, where σ0 is a positive constant, and θ is the angle from the “north pole” to the point of interest and satisfies 0 ≤ θ...

1. What was the overall effect of Napoleon's Civil Code? A: The overall effect of Napoleon's Civil Code was to erode the remnants of the feudal system by further weakening the traditional power of the nobility and clergy. 2. Why did being a sea power help Britain to survive an...

### Calculus

The weekly demand for the Pulsar 25-in. color console television is given by the demand equation p = -0.03 x + 571\ \ \ \ \(0<=x<=12,000\) where p denotes the wholesale unit price in dollars and x denotes the quantity demanded. The weekly total cost function associated ...

1. Which line is the flattest (or is less steep)? Why? a.

### More Math To Check Please

4c^2 - 12c + 9 This is what I got: (2c+3)(2c-3) *Is that correct.? No, it is (2c-3)^2.

### word unscramble

xhfzhgzhoita Check the spelling. I found no matches.

### English

Could someone check my answers for this exercise. Dangling Modifiers

### computers

What is the main disadvantage of relying on spell check on your computer?

### algebra

what does it mean to solve and check for extraneous solutions for sqry+9=1

### algebra

I need help with: solving and check for extraneous solutions. sqrt y+9=1

ok So The American Association of Labor legislation did what then n

### algebra

When solving a rational equation, why is it necessary to perform a check?

### algebra

graph and check to solve the linear system. problem: 2x-3y=-3 x+6y=6

### english

i had a parargrahp writen i want you to check if its right orno t.

### pre-algebra

can someone check if this inequality is solve right 5x + 3 >= 28 -3 -3 5x >= 25 5 5 x <= 5

### Math 116 algebra please check

Solve -0.8x < -56 The solution is x<70

### Math 116 algebra please check

Solve 8x - (5x + 7)= 17 The solution is x= 8

### Math 116 algebra please check

Solve 5/2x + 1/4x = 9/4 + x The solution is x 9/10

### math - scientific notation

please check. thanks. (8.3 x 10^-15) (7.7 x 10^4) = 6.391 x 10^-10 Is that right?

### science

i need help making a catapult. im gonna check my pc tomorrow

### Math check

Find the y-intercepts for the function given by: f(x)= 4/(x+5)-1/(x-4)/2/(x-3)+3/(x+2) I am stuck

### Math check

express in terms of i and simplify: srqt-54 is it -3isqrt6?

### college

What is the ICD-9-CM code for a routine infant health check?