12/10/18

what is an equation of the line that is parallel to y=5x-7and passes through (1,11)
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12/07/18

An unknown substance with a mass of 100 grams absorbs 1000 J while undergoing a temperature increase of 15 degrees Celsius what is the specific heat of the substance

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12/06/18

Differential equation

X(dy/dx) - y=(x^p) +1, where x is a real number and is not 0. p is a positive integer, p>1. Solve the differential equation given that y=-1 when x=1. Give ans in form y=f(x)
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12/05/18

need help math question
if f(x)=3x^7-4/x^2+4 (3√x+1, find f'(x) and f''(x)
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11/29/18

(Calculus 1 class) Use Newton's method to approximate the indicated root of the following equation: the root of tanx=x in the interval (pi/2, 3pi/2)
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11/28/18

Value of the 2nd capacitor
A 7.7µF capacitor is charged by a 125 V battery and then disconnected from the battery. When the charged capacitor (C1) is then placed in a circuit with a second, initially uncharged capacitor C2,... more
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11/25/18

The line y = mx + 4 is a tangent to y = 3x^2 + 5x + 7. Find the value of m.
Working out please!Step by step..Thank you!
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11/13/18

Simple Urgent question: voltage for circuit
A 6V battery, three resistors and three voltmeters are connected. What are the possible readings for each voltmeter?My answer: 3V for top resistor, 3V for second resistor and 6V for the bottom... more
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11/08/18

How do you simplify 6-√ -8/2?
I have a lot of trouble simplifying negative square roots because I don’t understand how to do it.
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11/07/18

You wish to test the following claim ( H a ) at a significance level of α = 0.001 .
You wish to test the following claim (Ha) at a significance level of α=0.001.      Ho:μ=72.6       Ha:μ≠72.6You believe the population is normally distributed and you know the standard deviation... more
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11/07/18

Statistics introduction. I think the answer is 1/3.
Once again, the electricity in my house went out as I was pulling the socks out of the dryer. I had only six single socks in there, a mix of red and blue. If I only pull out two socks the chances I... more
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11/07/18

Linear programming

A health food store is creating smoothies with soy protein and vitamin supplements. A soy joy smoothie cost $2.75 and uses 2 ounces of soy and 1 ounce of vitamin supplements. A vitamin boost... more
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11/02/18

The primary of a transformer connected to 70 V has 10 turns. The secondary has 150 turns. Find the output voltage. This is a step-up transformer.
Transformer relationship: Primary voltage/Number of primary turns=secondary voltage/number of secondaryturns
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10/29/18

Internal resistance

When a 12 V batter with 1Ω internal resistance is connected to a motor, it delivers a current of 2.4 A. The battery is now replaced with a new battery with the same emf but a different internal... more
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10/28/18

How many customers did it take to make 22,500 sales.
4 types of customers bought 22,500 times in 1 year : 10% bought 1 time 12% bought 3 times 15% bought 6 times 63% bought 12 times How many customers total bought in 1 year?
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10/25/18

How do you graph y = 2|x-3|using two linear equations?

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10/20/18

A transformer has a primary voltage of 549 V and a primary current of 121.66 A. The ratio of primary to secondary loops is 440. What is the current in the secondary?
(show units: type V for Volts, A for amps, ohms for Ω , W for Watts, eV for electron volts, Hz for Hertz, N for newtons,  m for meters, s for seconds, J for Joules, cal for calories, m/s for meters... more
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10/18/18

If a seed is planted, it has a 95% chance of growing into a healthy plant. If 9 seeds are planted, what is the probability that exactly 1 doesn't grow?
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10/14/18

the normal approximation to the binomial distribution
a magazine reported that 6% of american drivers admit to reading a newspaper while driving. if 500 drivers are selected at random, find the probability that exactly 40 will admit to reading the... more
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10/08/18

Don't understand Kolmogorov-Smirnov test
I am stumped doing a journal club for class. I am looking at a scientific article in which they used the "Kolmogorov-Smirnov test" and I have no idea what that is. I'm trying to decipher if it was... more
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09/19/18

Ann and Nancy use a metal alloy that is 21% copper to make jewelry how many ounces of an alloy that is 18% copper must be mixed with an alloy that is 23% copper
What's the answer?
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09/06/18

a 7 kg. mass is moved across table at 25 m/sec. what force caused the acceleration?
 need help solving
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09/06/18

Through (5,-3) perpendicular to -8x-5y=-25
I have a test tommorow and I'm crying pls help   
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09/06/18

Find all solutions to the equation. sin x = square root of three divided by two.
Do I have to use the unit circle for this? If so, how?
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09/05/18

A person drops a penny from the top of a tall building and it takes 15 seconds to hit the ground. Using the acceleration -9.8 m/s^2, how tall is the building?
HELP!!!!!!!
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