How many protons, neutrons, and electrons are in each?

How many protons, neutrons, and electrons are in each?   a. Fluorine-23   b. 59Co   c. molybdenum-96

An addition to a house increases the 275m to 300m.

By what percent was the original floor increased?    How ow will I find the percent?

need help on this.

To convert a temperature from degrees Celsius to degrees Fahrenheit, you multiply the temperature in degrees Celsius by 1.8 and then add 32 to the result. Find F as a linear function of c, and use... more

10/22/16

Latoya drove 792 miles in 11 hours. At the same rate, how long would it take her to drive 936 miles?

 How do you set up the problem?

10/22/16

The Basics

 Joey has nickels and dimes in his pocket. The number of dimes is 4 times the number of nickels. If Joey has 10 nickels, what is the total value of the money he has in his pocket?

10/21/16

if you add solute to a dilute solution, the solution becomes a more what solution?

what isthe solution more of ?  

10/21/16

The sum of two numbers is 13. If one number is subtracted from the? other, the result is 3. Find the numbers.

i need help with this math problem really bad because if i fail this class im done.

10/21/16

Given the straight line (d) of equation: – 2x + y + 3 = 0.

a- Write the equation of (d) in the form y = ax + b. b- Write down the slope of (d) and give its verbal description. c- Find y-intercept and give its verbal description. d- Graph the straight line... more

How do I solve d/dx e^(2x)(x^2 + 5^x)?

I believe I am supposed to use the chain rule? I am still new to the concept so please, step by step how would I solve this?

10/21/16

Variation Equation

If y varies directly as x and inversely as m squared and r squared, and y = 5/3 when x = 1, m = 2 and r = 3 find y when x = 3, m = 1 and r = 8

How do I start?

nt frequency of a circuit may be found by the formula fequalsStartFraction 1 Over 2 pi StartRoot LC EndRoot EndFraction where f is in cycles per? second, L is in? henrys, and C is in farads. Find... more

10/20/16

Suppose the perimeter of a rectangular floor is 100 feet. Find the dimensions of the floor if the length is twice the width.

I need help solving this linear system and learn how to set it up correctly 

10/20/16

Im confused how I would solve this?

A train leaves Santa Monica Station and travels north at a speed of 75 kilometers per hour. Two hour later, an express train leaves on a parallel track and travels north at 125 kilometers per hour.... more

10/19/16

A woman earns $2500 per month and budgets $250 per month for food. What percent of her monthly income is spent on food

A woman earns $2500 per month and budgets $250 per month for food. What percent of her monthly income is spent on food

I believe this is e rule but i'm not sure.. help?

Find y′ if x^(3y) = y^(2x).   1. y′=  3y^2(ln x − 1)             3y ln x + 2x   2. y′ =  y^2(ln x − 1)             3y ln x − 2x   3. y′ =  y(2x ln y − 3y)            x(3y ln x − 2x)   4.... more

10/19/16

distance an object falls

The distance that an object falls from rest, when air resistance is negligible, varies directly as the square of the time. A stone dropped from rest travels 144 feet in the first 3 seconds. How far... more

MATH PROBLEM FRACTION

the product of the numerator and denominator of a certain fraction is 588. What is the fraction if it is equivalent to 3/4? 

10/18/16

help need to answer asap!!!!!!!!!!!!!!!!!!

A race car driver won a 400 mile race with a speed of 108.5 miles per hour. Find the? driver's time.

10/18/16

find the derivative of 5 sinh(ln t). For this I tried so many different ways and I continually get it wrong.

The function is 5 sinh(ln t). In all my methods I assumed 5 to be a constant, and pulled it out. for the first try I said 5 cosh (ln(t))*1/t then I tried using and replacing the e's in the... more

10/18/16

one number is 3 more than twice the other number.if the sum of the numbers is 24 what are the two numbers

one number is 3 more than twice the other number.if the sum of the numbers is 24 what are the two numbers

10/18/16

You eat 3/10 of a pack of hot dogs. Your friend eats 1/5 of the pack of hot dogs. What fraction of the pack of hot dogs do you and your friend eat?

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10/18/16

physics help

On May 20, 1999, Robbie Knieval easily cleared a narrow part of the grand canyon during a world record setting long distance motorcycle jump 69.5m. He left the jump ramp at 10 degrees angle above... more

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