# Posts by Jake

Total # Posts: 2,287

**Calculus**

Let f(x)=x^2-8x+16 and g(x) x^2-16. For what values of x is f(x)/g(x) increasing? Explain plz~

**Physics 161**

what is your "m" in your equations stand for?

**Physics 161**

A cat dozes on a stationary merry-go-round, at a radius of 6.9 m from the center of the ride. The operator turns on the ride and brings it up to its proper turning rate of one complete rotation every 7.3 s. What is the least coefficient of static friction between the cat and ...

**Calculus**

Let f(x)= (3x^2-2x+1)/(x-1). What are the types of asymptotes of f(x)? What are the equations of all the asymptotes of f(x)? The types of asymptote are vertical and oblique? x=1? Is there something wrong I did

**Calculus**

Determine the points at which f'(x)=0 for each of the following functions: f(x)= x^3+6x^2+1 f'(x)=3x^2+12x What to do next?

**Calculus**

The fuel efficiency, E, in litres per 100 km, for a car driven at speed v, in km/h is E(v)=1600v/(v^2+6400) a) determine the legal speed that will maximize the fuel efficiency using speed limit of 50 km/h

**Calculus**

An object moves in a straight line. Its velocity, in m/s, at time t is v(t)=4t^2/(4+t^3), t>(greater or equal)0. Determine the maximum and minimum velocities over time interval 1<t<4 I got minimum as 1= 4/5. However for maximum at t=4, I got 16/17 but the book says 4/3?

**Calculus**

An object moves in a straight line. Its velocity, in m/s, at time t is v(t)=4t^2/(4+t^3), t>(greater or equal)0. Determine the maximum and minimum velocities over time interval 1<t<4 I got minimum as 1= 4/5. However for maximum at t=4, I got 16/17 but the book says 4/3?

**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?

**Calculus**

Thanks!

**Calculus**

Verify if correct or not please =) What is the slope of the normal to y= (x^2-1)/(x+5) at (1,0) a) -3 b) -1/2 c) -1/3 d) 1/3 Answer is A, -3. ---------------------------------------- What is the y-intercept of the line that is tangent to f(x)=4/(3x+1) at (-1, -2)? a)-5 b) -3/4...

**Math**

if h(t) = 17.4 * 1.23^1, find h(13)

**math - probability**

1. 7 over 8

**Ground School: Regulations**

I am working on my private pilot license and these regulation things, HOW do you learn all of them?????????

**Piloting: stumped**

We are taking the class together and have questions about it. we aren't the same person!!

**math**

If you flip 2 coins then 25% chance

**math**

4 out of 5 that the number will be less than 900

**Math**

if f is an exponential function, and f(5)=20 and f(9) = 14, use the add-multiply property to calculate f(13),f(17), and f(21). Show your method

**math**

3/7

**chemistryyyy**

A solution is made by dissolving 0.0100 mol of HF in enough water to make 1.00 L of solution. At 23 °C, the osmotic pressure of the solution is 0.308 atm. What is the percent ionization of this acid? Please help.

**Calculus-derivatives**

Verify these answers~ 1. For what value(s) of x does f(x)=(x^2-16)^5 have a horizontal tangent? a) x=-4,4 b) x=-4,0,4 c) x=0 d) x=0,4 Answer is B, x=-4,0,4 --------------------------------------- 2. What is the derivative of f(x)=(3x^2+7)^3? a) f'(x)=3(3x^2+7)^2 b) f'(...

**Calculus-derivatives**

What is the slope of the tangent of each curve at given point y=√(16x^3), (4,32) If I find the derivative of y=√(16x^3) Will it be 16/-x^3

**Calculus-derivatives**

So for number 1 the answer is t=1 -2+2t=0 2t=2 2/2=1

**Calculus-derivatives**

Oh crap nvm!

**Calculus-derivatives**

For number one we find the derivative of 3-2t+t^2 wouldn't that be t-2?

**Calculus-derivatives**

Explain how to do these questions~ 1. An object moves in a straight line with its position at time t seconds given by s(t) = 3-2t+t^2, where s is the measured in metres. At what time is the object not moving? 2. Determine the coordinates of the point(s) on the graph of y=3x- 1...

**Math**

a ship leaves sydney heads and travels 45 km due east. it then returns and travels 86 km due north. how far is it from its starting point? please guys step by step.. thank you in advance.

**Calculus**

Explain how you got the answer please.

**Calculus**

What is the derivative of 6/x?

**Calculus**

For each function, find the derivtive f'(a) for given value of a f(x) = sqrt(x+1), a=0

**Calculus**

Thank you~

**Calculus**

May I know where you got 5a + 5h - 2

**Calculus**

Find each function, find f(a+h) and f(a+h)-f(a) a) f(x)=5x-2

**English**

What are 25 facts about Mr. Frank after the annex

**Calculus**

Why is it important to determine continuity of the function?

**Math**

State the equation of the line passing through the points (7,-1) and (2,2) a) 5x+3y-16=0 b) -5x-3x-16=0 c) -3x - 5y - 16=0 d) 3x + 5y-16=0 ------------------------------------ Is letter D correct?

**Chemistry**

How do you find the ratio of moles of oxygen to moles of tin? What would be the Empirical formula of tin oxide from the result of ratio? From my calculations I got the moles as: Moles of oxygen = 1.761 x 10^-2 Moles of Tin = 8.944 x 10^-3 Thanks!

**Calculus**

Examine the continuity of the function h(x)=[-x, if x<0 .......0, if x=0 .......x, if x>0 I don't understand this question...

**Calculus**

Thank you~~

**Calculus**

Determine the equation of the line described by the given information. a) slope -2/3, passing through (0,6) b) passing through points (2,7) and (6,11) c) parallel to y=4x-6 passing through point (2,6)

**Calculus**

Determine an expression, in simplified form, for the slope of the secant PQ. Given: P(1,3) , Q(1+h, f(1+h)) , where f(x) = 3x^2 PQ=Y2-Y1/X2-X1 I keep getting wrong answer, arghhh.

**Calculus**

How to rationalize this question? (√3 - √2)/(√3+√2) Do I multiply those two by(√3 - √2) or (√3 + √2)

**algebra**

How do you write someone is older than 27 by less than 38 as an inequality?

**Physics**

An elevator (mass 4175 kg) is to be designed so that the maximum acceleration is 0.0700g. What is the maximum force the motor should exert on the supporting cable?

**Precalculus**

How can i write this in log form 5^-2 = 0.04

**Precalculus**

Quad III and IV? May I know how you got 3.86132? and value for quad IV?

**Precalculus**

Solve for x, 0<x<2pi 3sin^2x - sinx -2=0 Its not factorable, do I use quadratic formula?

**Precalculus**

The answer says:16.0 or 74.0 degrees :|

**Precalculus**

When a projectile leaves a starting point at an angle of elevation of theta with a velocity v, the horizontal distance it travels is determined by: d=v^2/(32) sin2theta Where d is measured in feet and v in feet per second. An outfielder throws the ball at a speed of 75 miles ...

**Physics**

10m/s

**Precalculus**

Write 4log2+log6-log3 as a single logarithm. Explain with steps please!~~

**Precalculus**

If the base was 2 then it would be cuberoot 2^6?

**Precalculus**

Evaluate log(Base4) ^3sqrt64 (The ^3 is an exponent infront of sqrt 64) I keep getting wrong answer :|

**Precalculus**

Solve for x: 6^(x+3) - 6^x = 215. I got answer as 1, is it correct?

**Precalculus**

Thankk you! Took me long to figure it out!

**Precalculus**

Solve 5^(2-x) = 1/125 for x.

**Math**

How do I solve this if there is no equation to this 1. The population of the bacteria in a Petri dish increases by a factor of 10 every 10 hour. If there are initally 20 bacteria in the dish, how long will it take before the population increases to 60,000 to the nearest tenth ...

**history**

What is the term for the power to make final decisions?

**government**

What is the term for the power to make final decisions?

**Math**

Determine the exact value of cos 465 degrees a) √3 + √2/2 b) √2 + √3√2/4 c)√2 - √3√2/4 d)2+√2-√3√2/4

**Math**

Explain how to do this with steps please. 1. Simplify cos(x-y)+cos(x+y)/cosx I did some of these so far, don't know if it is correct. Formula: cosxcosy= cos(x+y)+cos(x-y)/2 cos(x-y)+cos(x+y)/cosx =cosxcosy/2cosx

**Math**

Explain how to do this with steps please. 1. Simplify cos(x-y)+cos(x+y)/cosx Formula: cosxcosy= cos(x+y)+cos(x-y)/2 cos(x-y)+cos(x+y)/cosx =cosxcosy/2cosx

**Math**

Justine measures the milk in two different cartons. One carton contains 1 liter and 665 milliliters of whole milk, and the other carton contains 1 liter and 183 milliliters of chocolate milk. How much more whole milk is there than chocolate milk?

**Math**

How come I am not suppose to get rid of the the denominator?

**Math**

How many solutions does the equation cosx + 1/2 = 1 have for 0<x<2pi cosx+1/2=1 cosx+1=2 cosx=2-1 cosx=1 therefore 1 solution? A) 1 b) 2 c) 3 d) 4

**Math**

Solve (sinx-1)(cosx -1/2) = 0 where 0≤x<2pi a) pi/3, pi/2, 5pi/3 b) pi/6, 5pi/6, pi c) pi/3, pi, 5pi/3 d) pi/6, pi/2, 5pi/6

**Math**

Thank you~ T.T my school is fast paced, I am trying to keep up...

**Math**

How did you get 1 + cot^2 x?

**Math**

What is the first step. Explain please. Which expression is equivalent to cos^2x + cot^2x + sin2^x? a) 2csc^2x b) tan^2x c) cot^2x d) csc^2x cos^2x + cot^2x + sin2^x

**College Algebra**

5sec

**inventions**

Need to come up with an invention

**Precalculus**

Which value for x is a solution to cosx = sqrt of 2/2? a) -9pi/4 b) 3pi/4 c) -3pi/4 d) 4pi/3 What is the first step I should do?

**Math**

Options are a) 0 b) 1 c) -1 d) undefined

**Math**

Could someone explain the steps for this question. Simplify the expression tan(5pi/8)-tan(3pi/8)/1+tan(5pi/8)tan(3pi/8)

**English**

I am doing an application it says: Have you held any leadership type positions? Yes/No Please describe (100 words or less) I did not have any leadership type positions, so no. My question is, do I have to explain why I did not have any leadership or is it only if I say yes?

**math**

During an art contest you and a classmate each won blue ribbons for 1/3 of the pieces you entered. You won 2 blue ribbons and the classmate win 3. Explain how.

**Math**

If the diameter of a monster truck tire is 3.5 m and it makes one rotation every 5 seconds, how far does the tire roll in 1 minute? Diameter 3.5 radius: 3.5/2 = 1.75 12(2pi x 1.75) =131.9 m the book states that its 263.89 m? What did I do wrong?

**Math**

I am confused for number 3

**Math**

I am still confused for number 2. For number 3, you used the amplitude(which is 4) to find lowest+highest?

**Math**

1. The height of a bumble bee above the ground is modelled by h(t) = 0.5cos(2π t) + 2, where h is in metres and t is in seconds. At what time is the bee’s instantaneous rate of change of height with respect to time greatest? a.) 1 s b.) 1.25s c.) 1.5s d.) 2s Why is ...

**Math**

Thank you~

**Math**

Why is 32/5 = 6 2/5?

**Math**

If an object travels in a circle 32pi/5 radians, at what degree measure is it, relative to where it started? a) 1052° b) 144° c) 72° d) 98.6° I got 1152° but there is no option for the answer, what did I wrong?

**Math**

How do you find the distance? Please explain the steps >< A ball in a pinball machine moves 13 of the way through a circular groove that has radius 3 m. How far does the ball travel? a. 3.14 m b. 360 m c. 6.28 m d. 0.69 m

**math**

i think it is b credit unnion

**math**

7. A _______ is a group of people who agree to save their money together and to make loans to each other at a relatively low rate of interest. [A. commercial bank] B. credit union C. Christmas club D. investment firm

**math**

3. The gross income of David Vaughn is $785 per week. His deductions are $42.25, FICA tax; $90.33, income tax; 2% state tax; 1% city tax; and 3% retirement fund. What is her net income for one week? A. $675.32 B. $628.77 [C. $605.32] D. $749.77

**english**

1. Write a composition using one of the topics listed below. Your composition should be three to five paragraphs long. It should contain an introduction, a body, and a conclusion. c. Compare and contrast driving in the winter and driving in the summer. 2. Write a letter of ...

**Precalculus**

For number 4, I got this answer after calculating... 4x/(x-2)=(3x-2)/(x-2) 4x(x-2)=(3x-2)(x-2) 4x^2 - 8x = 3x^2 - 6x - 2x + 4 4x^2-3x^2-8x+6x+2x-4=0 x^2 - 4 =0 (x-2)(x+2)=0 x= 2, -2 Am I doing something wrong?

**Precalculus**

Could someone help/verify these answers~ Thanky you! 1.What is the range of the reciprocal function of f(x)=10-x^2? a) {YER|y≥1/10} b) {YER|y≥10} c) {YER|1/10≤y<0} d) YER|y<0 or y≥1/10} Answer: D? ---------------------------------------- 2. It ...

**english**

please check for mistakes it is in paragraphs but the one i put up is not

**english**

1. Write a composition using one of the topics listed below. Your composition should be three to five paragraphs long. It should contain an introduction, a body, and a conclusion. c. Compare and contrast driving in the winter and driving in the summer. 2. Write a letter of ...

**Math**

So I have to use quadratic formula right? If so, no wonder I don't get the answer

**Math**

How do you do this question? I am not sure if this right. 1. solve rational equation A) (x+3)/(x-1)=2x+1 x+3=(2x+1)(x-1) x+3=2x^2 - 2x + x - 1 ??

**calculus AB**

ç is the integral sign

**calculus AB**

given ç 1to-1 f(x)dx=0 and ç 1to0 f(x)dx=5, compute the following a.ç 0to-1 f(x)dx b.ç 0to1 3f(x)dx=0 c.ç 1to-1 (f(x)+7)dx=0

**calculus ab**

The velocity of a particle tralling along the x-axis is given by v(t)=(e^-t)(sin(t)). Find the following a. Compute the net change in distance from time t=1 to time t=3 (this is equivalent to s(3)-s(1) b. compute the total distance traveeled from time t=0 to time t=6pi c. Find...

**ap calculus ab**

for f(x)=lnx we know that f(e)=1. Use the tangent line at(e,1) to compute the tangent line approximation of f(3). what does the difference between the actual value and the tangent line approximation have to do with the concavity (2nd derivative) of the function at (e,1)?

**Math Fractions**

12/12 divided by 3/8 i really need help someone plz help!!!!

**Math Fractions**

12/12 divided by 3/8 i really need help someone plz help!!!!