how to find the rate of change from a graph with no points

missed day of math have no clue how to do this 

What is the speed of each planes.

Two planes, which are 1880 miles apart, fly toward each other. Their speeds differ by 40mph. If they pass each other in 2 hours, what is the speed of each?

09/07/17

A car whose speed is 20 m/s passes a stationary motorcycle which immediately gives chase with a constant acceleration of 2.4 m/s2 .

how far will the motorcycle travel before catching the car. I know the answer is 333 but I need help getting there. thanks 😊

09/07/17

what kind of number is 13,322

Indicate the set(s) to which the following number belongs. 13 comma 32213,322Select all that apply.  A.irrational numbers B.real numbers C.natural numbers D.rational numbers E.whole numbers F.integers more

Describe the motion of the particle

x= 2sint y=4+ cost    0≤t≤3pi/2    I dont understand the solution. My solution booklet says that the particle starts at ( 0,5) and moves clockwise and ends at ( -2,4) . I only got to solving... more

Train travel

A freight train covered 120 mi at a certain speed. Had the train been able to travel 10 mph faster, the trip would have been 2 hr shorter. how fast did the train go?

Driving speed

Sean's Camaro travels 15 mph faster than Rita's Harley. In the same time that Sean travels 156 mi, Rita travels 120 mi. find their speed?

Double the difference of an unknown number and five is the same as five less than twice the number what is the number

Double the difference of an unknown number and five is the same as five less than twice the number what is the number

Jacob and Isaiah are brothers. Their combined ages are 63. Jacob is 7 years older than Isaiah. How old are each of the boys?

The equation I came up with is 7J + I = 63. But after solving it I got 56 but I  don't actually know how to find the ages for both of them. Please help. :) 

Find three executive odd integers such that three times the sum of the first and second integers is two less than the third integer

Find three consecutive odd integers such that three times the sum of the first and second integers is two less that the third integer 

09/06/17

What is a quantum jump and how does it relate to Bohr's atomic model

 need to know how does the quantum jump and bohrs atomic model relate

09/06/17

A company wants to decrease their energy use by 15%. If their electric bill is currently $2,200 a month, what will their bill be if they’re successful?

A company wants to decrease their energy use by 15%. If their electric bill is currently $2,200 a month, what will their bill be if they’re successful?

Determine where the function is continuous

x-2/9x2-16

09/06/17

Quotient of 4 and 9

Quotient of 4 and 9

09/06/17

Calculate Equation of Line Tangent Given the Graph f'(x)

I'm given the graph of f'(x) which shoes a horizontal line from (10, -15) to (14, -15). The questions asks: Given f(12)=5, find the equation of the line tangent to the graph of f at x=12. How would... more

how do i simplify this to a positive exponent, m^4 x 2m^-3

 combining and simplifying, must be positive at the end

09/05/17

Find and simplify f(a + h) − f(a) h , (h ≠ 0) for the function. f(x) = 8x2 − 8x + 7 and it's all divided by h

I got 8a^2+8h^2+8ah^2-8h+14/h but it doesn't seem right, I don't quite understand how to simplify it

1. If cos x = -cos(π/6) and π/2<x<π, find the value of x.

Please show working out

09/05/17

What if an atom loses one electron?

I am  pretty sure it would just have a positive charge but I want to know for certain. 

09/05/17

What does -6 equal

Gsyshvehwkwk

09/05/17

Quantum numbers

How many electrons in a tellurium atom have quantum number l=1? Explain

Find two consecutive natural numbers

Find two consecutive natural numbers such hat the difference of their reciprocals is 1/7 the reciprocal of the smaller number

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