a train can travel 1230 miles in 5 hours. what is the unit rate that this train is traveling per hour? _____ miles per hour.

Answers

Answer 1

Answer: unit rate = 1230 miles / 5 hours = 246 miles per hour.

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Select all the irrational numbers. *1 point

A.6

B.-49

C.-1,405

D-0..3

E.e

F.2

Answers

Answer:

plz explain

Step-by-step explanation:

Solve each system by the addition method.-4x+7y =9
2y=-5x-22
Put the answer in (x,y) form

Answers

-4x + 7y = 9 ⇒ -4x + 7y = 9 ⇒    8x - 14y = -18
2y = -5x - 22 ⇒ -5x - 2y = 22 ⇒ -35x - 14y = 154
       43x = -172
      43    43
   x = -4
      -4x + 7y = 9
         -4(-4) + 7y = 9
      16 + 7y = 9
      - 16     - 16
      7y = -7
   7 7
      y = -1
      (x, y) = (-4, -1)

Compare the functions shown below:f(x) = x3 + 2x2 − 4x − 3
g(x)

polynomial graph with x intercepts at negative 2, negative 1, 1, 3, y intercept at 6
h(x)

trig graph with points at 0, 3 and pi over 2, 0 and pi, negative 3 and 3 pi over 2, 0 and 2 pi, 3
Over the interval x = 0 to x = 2π

Which function has the most x-intercepts?

Answers

The function f(x) = x^3 + 2x^2 - 4x - 3 is a polynomial function of degree 3 and hence will have three solutions and hence 3 x-intercepts. The function g(x) has x-intercepts at x = -2, x = -1, x = 1 and x = 3. Hence function g(x) has 4 x-intercepts. The function h(x) has x-intercepts at points (pi over 2, 0) and (3 pi over 2, 0). Hence function h(x) has 2 x-intercepts. Therefore, the function with the most x-intercepts is function g(x) with 4 x-intercepts.

f(x) has at most 3 x-intercepts and g(x) has 4, so g(x) has more x-intercepts.

Which function has more x-intercepts?

Remember that for a polynomial p(x) of degree N, the maximum number of x-intercepts that the polynomial can have is N.

In this case, the functions are:

$f(x) = x^3 + 2x^2 - 4x - 3$

So the degree of f(x) is 3, so it has at maximum 3 x-intercepts.

The other function g(x) has the x-intercepts:

x = -2, x = -1, x = 1, x = 3

So it has 4 x-intercepts.

Then we can conclude that g(x) has more x-intercepts.

If you want to learn more about polynomials:

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The difference between longitude and altitude

Answers

Hello there,

The difference are Longitude (shown as a vertical line) is the angular distance, in degrees, minutes, and seconds, of a point east or west of the Prime (Greenwich) Meridian. Lines of longitude are often referred to as meridians.

And altitude is the height of an object or point in relation to sea level or ground level , great height

3 divided by what equals 94