12/19/17

Which ball will experience the greater change in temperature?
A steel ball and a rubber ball of equal mass are at room temperature. Each is dropped from the same height on to a solid floor. The steel ball rebounds to a greater height than the rubber ball.... more
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12/19/17

When you reverse the digit in a certain two digit number you decrease it’s value by 36 find the number of the sum of its digit is 14
I need help with my math problem and everyone have similar questions but not the same one I’m lookin for any help would be nice  
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12/19/17

5 times a number decreased by 8 is equal to 27 more than the same number
I don't know have to do it the equation is written as a question  
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12/19/17

9. Story problem.
9. The population of a city is increasing at a rate proportional to its size. It follows the function P(t)=1+ke0.03t where k is constant and t is the time in years. If the current population is... more
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12/18/17

How many pounds of candy that sells for $0.88 per lb must be mixed with candy that sells for $1.34 per lb to obtain 7 lb of a mixture that should sell for $0.93
i need help. 
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12/18/17

A Ball Is Thrown
A ball is thrown downward from a window in a tall building. Its position at the time (t) in seconds is s=16t2+32t, where is is in feet. How long (to the nearest tenth) will it take the ball to fall... more
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12/18/17

how long is a small bridge in yards ?
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12/18/17

what is the distributive property of 15+36
I am doing math homework and I don't know how to solve it
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12/18/17

Simplify cot^2(x) - csc^2(-x)
This was a multiple choice question, the answer i got was 1, but apparently the answer was -1, how could this be since csc^2(-x) = -csc^2x which would turn the subtraction into positive?
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12/18/17

A culture contains 20 cells of a certain bacteria. The population will triple every 6 hours. How many cells are present in 2 days time?
I have the answer because my teacher gave it to me, but i am confused on how to set up the equation for the word problem.
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12/18/17

If f(1)= 6 and f(n)= f(n-1) +3 then what does f(7) equal
I don’t get this and I’m very stressed so please help me   
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12/17/17

airplane accelerates at 3.2 m/sec2 travels 32.8 seconds to takeoff how far did it travel to take off
Airplane accelerates at 3.2 m/ sec2 for 32.8 seconds to tale off.  What is the dustance to takeoff?
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12/17/17

Solve for how much seconds for the object to hit the ground
If the function f(t)=-5t2+20t+60 models the approximate height of an an object after it is launched then how many seconds does it take the object to hit the ground?
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12/17/17

Solve for integers
What is the smallest of 3 consecutive positive integers if the product of the smaller two integers is 5 less than 5 times the largest integer?
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12/17/17

the sum of two numbers is 19 the difference is 7
i dont even know i just need an answer 
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12/17/17

Opposite of a numbers opposite
Jane completes several example problems that ask her to find the opposite of the opposite of a number and for each example the result is a positive number. Jane concludes that when she takes the... more
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12/17/17

If the sled starts from rest, what is its speed at the bottom of the hill
i need help in finding the answer here is the question  A child and sled with a combined mass of 50.2 kg slide down a frictionless hill that is 8.20 m high. If the sled starts from rest, what is... more
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12/17/17

My brother is three years older than I am. The product of our ages is 54, How old am I?
Need some help Really hard
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12/16/17

If ax=36-x(2a+1), then what value for a gives no solutions for x?
I don't get this
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12/16/17

If the lines 2x+3y+12=0 and y=mx+1 meet at a point whose coordinates are equal, what must m equal?
I really need help with this I have no idea what to do
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12/16/17

What is 19( -2 + 7k) simplified? i thought it was -38+133k but it's marking me as wrong
My teacher has online quizzes for us to take, and i just cant solve this problem. but we need 100% mastery to pass! HELP PLEASE
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12/16/17

this is a hard question!!
Erica and amy start biking in the opposite direction at the same time. eric picked at a speed of 6 meters and amy picked at a speed of 4 meters per second. how soon were they exactly 1 km apart?
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12/16/17

How to prove that if a number x can be written as x=6k+5, it can also be written as x=3j+2?
 I am really stuck. Please help me with this one.
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12/16/17

The sum of twice a number and 3 equals 6 less than five times the number. Find the number.
The word problem I'm answering has a choice of either 1,2,3 or 4
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12/15/17

Why is 3 negative?
My teacher showed us the answer key to the study guide for finals, and the fraction to graph was 3x+5y=-20. I changed it to slope intercept form and got y=3/5x-4. But the answer key showed that... more
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