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the answer would be 2.85. I'm a smart llama

Hi mom! I love you!

sin(A)^4 - cos(A)^4

=   ( sin²(A) - cos²(A) )( sin²(A) + cos²(A) )            Since  sin²(A) - cos²(A) = 1:

=   ( sin²(A) - cos²(A) )(1)

=   sin²(A) - cos²(A) 

sin^4@-cos^4@ = sin^2@-cos^2@    ....I'll use "x" instead of "@"......so we have

sin^4x - cos^4x       factor  this

(sin^2x - cos^2x) (sin^2x + cos^2x)       

But note.....  (sin^2x + cos^2x) = 1

So

(sin^2x - cos^2x) (1) =

(sin^2x - cos^2x)    and this equals the right hand side

The y coordinate for any x intercept is 0.......since, if the graph intercepts the x axis, y must be 0 at that point....

Let's look at this again.......

70^2 = 4900

4900 / 120 = 490 / 12 = 40.8333 

oh i made a mistake its 70^120

which the answer would be: 2580

its actually begger than that its a long answer

im a wolf lolzzz heyy <3

70^2*120

answer is: 588000

y=-2.59x-6.42

y=1.74x-1.52

answer is: 5.77, 8.51

D  .....  t >= r+2

You're correct, Tiddle.....I forgot about that detail......mine would be "thrown out of the club".......your answer still reigns supreme  !!!!

y=-2.59x-6.42

y=1.74x-1.52

The solution is about (5.77, 8.51)

sin (x) = 0.34425

We can use the sine inverse for this......so we have

sin-1 ( 0.34425) = about 20.14 degrees      ...... or, since the sine is positive in the second quadrant, too....about 159.86 degrees

answer is 0.88

You can either interpolate or extrapolate. Interpolate = find the target point on the line and draw vertical and horizontal lines to see what the X and Y values are. Extrapolate = extend line past it's known area and do the same.

a y-intercept is a point in the equation where the x-value is zero.

For the first one, D is correct.....an obtuse angle is > 90....but 9(6.8)+ 27 = 88.2

For the second one, we have

5x + 7(-4) ≥ 22    simplify

5x - 28 ≥ 22        add 28 to each side

5x ≥ 50               divide by 5 on both sides

x ≥ 10

So C is correct

Percents are just numbers out of 100. So 1% = 1/100 = 0.010.01 * 195000000 = 1950000.

The best thing to do with this to graph it is to first convert it into slope-intercept form (y = mx + b.)

To do this, we must remove the number modifying y. So we divide everything by 2:

2x + 2y = 4

    x + y = 2

Then we move x to the other side by subtracting x from each side:

    x + y = 2

          y = -x + 2

This makes an equation that is much easier to interpret and graph.

To put it on a graph, we start with the y-intercept (2).

Your first dot will got on (0, 2) and then after that each dot will be modified by the slope (-1).

So your next dots will be (1, 1), (2, 0), (3, -1), etc...

Going backwards on your line will be exactly the opposite: add 1 to each y and subtract 1 from each x:

(-1, 3), (-2, 4), (-3, 5), etc...

5/2 x 7/2 = 17 1/2

You posted this question twice.

If needed, bump the questions by posting an "answer" on it. Post Something like “Does anyone know how to answer this freaking question?!” That will get some attention.  

Here's the answer

(a) Work per minute = Potential energy per minute = mgh

Work each minute = 800*9.8*14 J = 109760 J

(b) Work per minute = kinetic energy per minute

Work each minute = (1/2)*800*18² J = 129600 J

(c) Power = rate of doing work = (109760 + 129600)/60  ≈ 3989 W  (because 1 W = 1 J/s)

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4x² - 4x - 8 - 4x²+5x → x - 8

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