All Answers 359166 Answers

You missed the fact that one of the x's is squared Anonymous!

Add 6x² to both sides of the equation:

6x² - 5x - 6 = 0

This can be factored as

(3x + 2)(2x - 3) = 0

so x = -2/3  and x = 3/2

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If you want to find the angle from a+ib then use atan(b/a).

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I agree that the answers are correct.

The first comes from:

$$m\frac{v^2}{r}=T\sin{\theta}$$ and $$mg=T\cos{\theta}$$ where T is tension in the string.

and the second from

$$Period=\frac{2\pi r}{v}$$

In both cases we have:

$$r=L\sin{\theta}$$

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Thankyou, that's great!

9+10=19

3+3+3+5+5=19

KE= 0.5m*v². Where m(a*s) is in kilo grams and v(elocity) is in meters per second.

Rearrange this formula to find velocity.

v= sqrt(2*KE/m)

v= sqrt(2*107/0.147)

v = 38.2 meters/second

That's 85.5 MPH (Typically considered a fast pitch for college and minor league. A skilled and practiced pitcher could throw this; most HS players coudn't come close).

_7UP_

the number goes over 100

for example:

78% turns into 78/100

or

2.65% turns into 2.65/100

$$\begin{array}{rll}
(2x-2)(8x-4)&=&9x-6\\
16x^2-8x-16x+8&=&9x-6\\
16x^2-24x+8&=&9x-6\\
16x^2-24x+8-9x+6&=&9x-6-9x+6\\
16x^2-33x+14&=&0\\
\triangle=33^2-4*16*14=193


\end{array}$$

$${\mathtt{x}} = {\frac{\left({\mathtt{33}}{\mathtt{\,\small\textbf+\,}}{\sqrt{{\mathtt{193}}}}\right)}{{\mathtt{32}}}} \Rightarrow {\mathtt{x}} = {\mathtt{1.465\: \!388\: \!874\: \!670\: \!306\: \!4}}$$

or

$${\mathtt{x}} = {\frac{\left({\mathtt{33}}{\mathtt{\,-\,}}{\sqrt{{\mathtt{193}}}}\right)}{{\mathtt{32}}}} \Rightarrow {\mathtt{x}} = {\mathtt{0.597\: \!111\: \!125\: \!329\: \!693\: \!6}}$$

THANK YOU!! SO MUCH!!

y = mx + b   ...so.....

y = (-3/4) x + (3/7)

to do this problem, you need to turn -6 into a fraction. so -6 turns into -6/1 and now you have to make sure the denominators are the same. you need to multiply -6/1 by 2 to the numerator and denominator which equals -12/2. now you can add 1/2 and -12/2 together to equal -11/2! hope this helps

Use the Belly button. It's near the halfway position, so it's a fractional button.

2f(3) says to put 3 into the function and multiply the result by 2

3f(-3) says to put -3 into the function and multiply the result by 3

Then just add the two above results together

Post back if you have trouble with this.....

c-7<3     add 7 to both sides

c < 10

(3/7) /  (2/5)      change to multiplication and "flip" the second fraction

(3/7) * (5/2)  = 15 / 14

I tried again and it worked. Thanks for explaining!

$${\mathtt{\,-\,}}{\mathtt{5}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{6}} = {\mathtt{\,-\,}}\left({\mathtt{6}}{\mathtt{\,\times\,}}{\mathtt{x}}\right) \Rightarrow {\mathtt{x}} = {\mathtt{6}}$$ hope this helps.

The cosine function only returns values from -1 to 1. Thus, your wanting to find an angle whose cosine = 3.......that angle doesn't exist.....

I don't know what kind of calculator you're using, but many have an e^x key. If so, just type in "1" and hit that key.......you should see 2.718......then add that to 34 and take the ln of the result....

How did you get 34+e = 36.7182818284590452? I mean how do you calculate it. I think I'm pressing something wrong because I keep getting Math error on it. 

13/20 = 65% of the original cost......so...the discount price is 35% off the original cost

In triangle GHI H=90 deg GI÷52 CM AND IH =21CM find angle I

1)  (8L x 2.5g/L) x 75 / 100 = 15g

2) Price / (Lbs) = Price per pound

1.49 / (1/4) = 5.96    and   2.19 / (3/8) = 5.84

The second one is the better deal

3)  3.50 / (2/3) = 5.25        4.20 / (3/4) = 5.60

i think it should be greather ten o so as long as you get something between 1- infinte then your good.

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