12/09/22

How much did he invest in each account?
Last year, boris had $30,000 to invest. He invested some of it in an account that paid 7% interest per year, and he invested the rest in an account that paid 5% interest per year. After one year,... more
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05/20/22

A simple circuit has a 24.0 V battery and resistors of resistance 3.0 Ω, 6.0 Ω, and R all connected in parallel. If the current through the battery is 15.0 A, what is the value of R ?
A 0.9 Ω B 1.1 Ω C 7.4 Ω D 8.0 Ω
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04/05/22

Interference and Beats Help
1. Two tuning forks are sounded together. One has a frequency of 512 Hz, and the two forks produce 8.00 beats per second when sounded together. What are the possible frequencies of the other... more
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09/04/21

A tiger leaps horizontally out of a tree that is 4.30 m high. If she lands 5.40 m from the base of the tree, calculate her initial speed 𝑣0 . (Neglect any effects due to air resistance.)
t= 4.30/9.8 x0.5 =0.88s vi= 5.40/0.88 = 6.14 I got the answer wrong
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09/03/21

The braking​ distance, D, in feet required to stop a car traveling x miles per hour on​ dry, level pavement can be approximated by...
D = 1/2(x^2)A) Calculate the braking distance for a car traveling 50 miles per hour and 100 miles per hour. How do your answers​ compare? Do they octuples, nonuples, triples, doubles, or... more
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12/19/20

algebra 1 (ASAP)
Green Grass, Inc. charges an initial fee of $15 plus $10 per hour for lawn services. Their main competitor, S & G Lawn Care, charges an initial fee of $35 plus $7 per hour. When would the... more
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03/24/20

Find the point on the line 4x + y = 9 that is closest to the point (-4,2)
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02/06/20

need help with trig
Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the temperature varies between 41 and 69 degrees during the day and the average daily temperature first... more
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02/05/20

Let f(x) =πx4−8x3+ 2x−11. Determine an equation of the tangent line to the graph of f at x=−2. ( line should pass through the same point as f at x=−2, as well as have the same slope as f at x=−2.)
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01/08/20

Force/Momentum problems
A 0.145 kg baseball is pitched at 35.0 m/s is hit on a horizontal line drive straight back at the pitcher at 50 m/s. If the contact tiem between the bat and ball is 0.02 seconds, thena) what is the... more
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01/05/20

Mississippi daylight
The approximate amount of daylight, D, in hours, in Oxford, Mississippi, can be modeled by the function D(x) = 12 -2cos ((2π/365)(x+10)) where x is the number of days since January 1st. On which... more
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12/25/19

Word Problem Please Help
An airplane flies 200 km due west from city A to city B and then 300 km in the direction of 30.0∘ north of west from city B to city C. How far is city C from city A?
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12/20/19

Please help me this is hard
The area of a circle can be modeled by A=πr^2where is the area and r is the radius of the circle.  What would the radicand, √A/πrepresent based on the original formula? 
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12/20/19

Please help me this is hard
There are twenty books on a shelf, six Science books and fourteen History books. Each student goes up to the shelf, selects a book and brings it back to their desk. What is the probability that... more
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07/25/19

Work and Energy

A 1000 kg car driving at 5 m/s will have how much KE
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07/23/19

Help with joint variation problem
The drag force on a boat varies jointly as the wetted surface area and the square of the velocity of a boat. If a boat going 6.5 mph experiences a drag force of 86 N when the wetted surface area is... more
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07/19/19

A 26 g rifle bullet traveling 240 m/s buries itself in a 3.5 kg pendulum hanging on a 2.5 m long string, which makes the pendulum swing upward in an arc.
Determine the vertical and horizontal components of the pendulum's displacement.Express your answers using two significant figures. Enter your answers numerically separated by a comma.
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07/16/19

What ticket price would maximize revenue? 
A baseball team plays in a stadium that holds 64000 spectators. With the ticket price at $8 the average attendance has been 28000. When the price dropped to $7, the average attendance rose to... more
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07/06/19

Trig Functions and the Unit Circle

determine the missing coordinate of the point (x, -1/4) that lies on the graph of the unit circle in quadrant III.
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07/05/19

How to create a file in Linux from terminal window?
What's the easiest way to create a file in Linux terminal?
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07/04/19

Trigonmetry class
Find the distance that the earth travels in 15 days (in millions of miles) in its path around the sun. Assume that a year has 365 days and that the path of the earth around the sun is a circle of... more
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07/04/19

Convert DOS line endings to Linux line endings in vim?
If I open files I created in Windows, the lines all end with `^M`. How do I delete these characters all at once?
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07/03/19

How do I get to root in terminal?
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06/25/19

Ax+By=-C, so what is x?
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06/23/19

Ojo lived 1/4 of his life as a boy, 1/5 as a young man and 1/3 as a trader and 13 years as an old man. How old is he?
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