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nineteen

twenny wun

y=-1/4x-(7/4) or y=-1/4x-(1 3/4)

Fractional exponents indicate a radical. So:

x^(y/z) is equal to the "z"th root of, x to the y power. So, 2^(1/2) means the 2nd, or square, root of 2 to the 1 power, or 2. That simplifies to the square root of two, or root 2.

2 ^ (6/7) means the 7th root of 2 to the 6th power (which is 64).

Fractional exponents are often used as a substitute for radicals, when using a computer, because many computers cannot put a "z"th root.

I am just going to assume that you dont know how to multiply, divide, add, and subtract with fractions?

Multiplying Fractions

Just multiply across, example :

1/2 x 3/4

3/8

Dividing Fractions

To divide fractions you use the recipricle (switch the fraction around) and multiply, example :

2/3 divided by 1/3

2/3 x 3/1

6/3

2

Adding Fractions

To add fractions you want to make sure the fractions you're adding all have the same denominator, example :

1/2 + 1/4

Multiply 1/2 by 2, to get the same denominator as 1/4

2/4 + 1/4

3/4

Subtracting Fractions

To subtract fractions you want to make sure the fractions all have the same denominators (like adding) also, if youre subtracting mixed numbers, when you borrow make sure to not add 10 the the numerator, but add the denominator instead (make sense?), example :

4 1/2 - 2 3/2

3 3/2 - 2 3/2

1

Hope this helps!

If you have a graphing calculator, such as a TI-83 or TI-84, this is very easy to solve. First, simply solve for y:

y + 2 = -1/4(x - 1)

Subtract 2 from both sides:

y = -1/4(x - 1) - 2

Press the " Y = " button on the calculator.

Enter: -0.25 ( x - 1 ) - 2 into Y1.

Press the " Graph " button.

Press the " 2nd " button.

Press the " Trace " button.

Press 2.

Press the left-arrow key until the cursor on the screen moves clearly to the left of the x-intercept of the line.

Press the " Enter " button.

Press the right-arrow key until the cursor on the screen moves clearly to the right of the x-intercept of the line.

Press the " Enter " button.

Press the " Enter " button again.

Your answer for x will come up on the bottom of the screen.

Now, take your answer for x and substitute it in to the original equation, and then solve for y.

There's your answer!

The symbol ^ means raised to a power. x ^ 2 is the same as x². So, 4 ^ 2 = 16 because 4² is 16.

160/100 = 96/x (since you dont know what 96 is of)

Cross Multiply

160x = 9600

Divide by 160 on both sides

x = 60

me neither...

Say you got  68/80

all you have to do is multiply this by 100

$${\frac{{\mathtt{68}}}{{\mathtt{80}}}}{\mathtt{\,\times\,}}{\mathtt{100}} = {\mathtt{85}}$$

So you to 85%     which is the same as  85/100  or  0.85

another example

23/30

$${\frac{{\mathtt{23}}}{{\mathtt{30}}}}{\mathtt{\,\times\,}}{\mathtt{100}} = {\frac{{\mathtt{230}}}{{\mathtt{3}}}} = {\mathtt{76.666\: \!666\: \!666\: \!666\: \!666\: \!7}}$$

just round this off to 77%   (It is closer to 77 than it is to 76)

that is 77/100

x^(y/z) for x to the y/z power

Well, if it is in relation to a parabola it is a point inside the parabola with special properties.

For instance, torches headlights and radar dishes are parabolic in shape.

the bulb of a torch is placed at the focus.  Any light that hits the sides of the torch will be reflected straight ahead to give a strong beam. 

Like this

I hope that helps .  :))

I just entered e on the calculator.  It is an irrational number that has very special properties (Like pi does)

$${\mathtt{e}} = {\mathtt{2.718\: \!281\: \!828\: \!459\: \!045\: \!2}}$$

$$-4^{2}-(-4)^{2}-4^{2}=\small{\text{ ????????? }}$$

$$\\= -16-(16) - 16 \\
= -16-16-16 \\
= - 48$$

67º13'4"-45º27'32"

$$\begin{array}{rrrr}
& 67\ensurement{^{\circ}} & 13' & 4" \\
=& 66\ensurement{^{\circ}} & 73' & 4" \\
=& 66\ensurement{^{\circ}} & 72' &64" \\
\hline
&-45\ensurement{^{\circ}} & 27' & 32" \\
\hline
=&21\ensurement{^{\circ}} & 45' & 32"
\end{array}\\\\
67\ensurement{^{\circ}} \ 13' \ 4" - 45\ensurement{^{\circ}} \ 27' \ 32" = 21\ensurement{^{\circ}} \ 45' \ 32"$$

1.95

Look at the sticky topic on fractions - there are other methods.

Tan(x)  = 0    at  x =  0, pi, 2pi, 3pi, 4pi, 5pi and 6pi

So, dividing these by 3 we have

Tan(3x)  = 0   at x = 0, pi/3, 2pi/3, pi, (4/3)pi, (5/3)pi and 2pi if we constrain x to lie in [0, 2pi ]

A more general solution is that x = (pi/3)n   where n is an integer

tan is sin/cos  It will be 0 when sin is zero.  This is at 0, pi, 2pi, 3pi, etc

so

3x=0, pi, 2pi, 3pi, etc

x=0, pi/3, 2pi/3, pi,4pi/3, 5pi/3  etc

1 Deg --> ? rad

$$\boxed{\\ \theta_{rad}= \theta_{deg} * \frac{ \pi }{ 180\ensurement{^{\circ}} } }\qquad \boxed{
\theta_{deg} = \theta_{rad} *\frac
{ 180\ensurement{^{\circ}} }{ \pi } }$$

Yep....and tomorrow after your test...you can come on here and brag about how easy it all was....!!!

your right.........maybe i should just sleep!

Well...if you're good at reading comprehension, and you can pass the grammar part....what's left??

You have probably done enough studying....after all...if you know what 2 + 2 is, why worry about it???

Besides...I find that 99% of the stuff you worry about doesn't even happen.....and the 1% that does happen...well you can't plan for that, anyway...so.....why worry??....you will just "psych" yourself out.....!!!

i hope so.....

in engliish tests i honestly dont study much...i just understand the story and write the question answers....its only grammar i need to look on but this time thats easy

the problem is im afraid that i havent done lots of hardwork i wont get good marks....you know the salary doesnt please you until you had been squeezed!

so its like that!