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-4M+4-9+6+m-1   combine like terms

-4m + m + 4 - 9 + 6 - 1  =

-3m - 5 + 6 - 1  =

-3m -5 + 5  =

-3m

It simplifies to this:-3m

2144mi / 8 hr  = 268 m/hr

4x+100

f(-5) = (-5)^2 + 3(-5) – 1    =  25 - 15 - 1   = 9

9^3  =  9^2 * 9  = 81 * 9   = 729

=12077/72

it is not a definite number. it is irrational.

19r+10

19  

yes

Find the diameter of a circle with a circumference of 21.98 feet. To work on this problem, we will need our formula for finding the circumference of a circle. To solve this problem we need to figure out what times 3.14 will give us 21.98. To do this, we divide 21.98 by 3.14.

1,2,4,5,10,20

n/9=(-63)   multiply both sides by 9

n = (-63)*9  = -567

Thanks but I don't understand 6- 10 still

x^2 = -3   this has no real solution....take the pos/neg square roots of both sides

x = (plus/minus)sqrt(3)i

0.000006   = 6 x 10^-6

24 hrs. in a day  x 7 days in a week  x 23 weeks =  3864 hrs.

11.

X     Y

–9   -2

-5   -7

-1  -12

3   -17

OK Haley ....this isn't difficult....just time consuming

If the differences in the x's and y's are constant, we have a line....if not, we don't

Notice that the difference in one x to another reading downward is +4

For example   -9 + 4   = -5      and -5 + 4 = -1    and -1 + 4 = 3   ...... etc.

And the difference in one y to another reading downward is also constant = -5

For example -2 - 5 = -7   and -7 - 5  = -12 ........etc

So...if we have a line......as we did in number 6.....use any two of the points to find the slope and then write the equation

For exampe in 11, we can use ( -9, -2) and (-5, -7)

                                                  ( x1, y1 )    (x2, y2)

The slope = m = [y2 - y1] / [ x2 - x1]   = [-7 - (-2)] / [-5 - (-9)]  =  -5 / 4

And the equation .....in point-slope form is

y - (-7)  = (-5/4) [ x - (-5)]        [remember that we can use any point on the line in this equation]

The rest are similar.........if the differences in x's and y's are not constant......we don't have a line so don't worry about writing an equation in that case

[13 is not a line...the y's are not constant......don't worry about it....!!! ]

what does 6kg 14g=

6. A line passes through  (2,    –1) and   (8,    4). Write an equation for the line in point-slope form.

                                        (  x1,  y1)         (x2 , y2)

Use the above to find the slope, m,  which is given by  :

m =  [ y2 - y1] / [ x2 - x1]    =    [4 - (-1)] / [ 8 - 2)  =  5/6

Then..... just use one  of the points (either one, doesn't matter) and do what we just did in 1 -5

y - 4 = (5/6)(x - 8)

This example should get you through  number 10

I'll finish the rest in a little while

What about the rest

I think so

Sorry, Haley.....they wanted point-slope form....here we go

These examples should cover every problem  3 - 5.......

Point-slope form   .......y - y₁ = m(x - x₁)

1. (10, –9); m = −2    →     y - (-9)= -2(x - 10)

2. (9, –8); m = 5/6  →        y - (-8)  = (5/6) (x - 9)