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It means something.0

is it Pi r squared x the length ?

5000=5*7^5x

1000=7^5x

5x=log7^1000

5x=3.549883987364815

x=0.709976797472963

$$\boxed{a^4*a^5=aaaa*aaaaa}$$

Is there a value for a?

I may need help on the ones of subtracting. Can you teach me how to do it?

Only help on T.

± is called the plus-minus sign. Hope that helps.

If you saying negative sign and positive sign, it'll be negative sign, since they have no equal sign. If it was both nagative sign, it's going to be positive sign, therefore they had same sign.

Yes it is. And it is incorrect, I guess. I will shoot the photo.

Isn't my answer the same thing as your second "possible" answer ???

I'm confused !!!    ????????

$$13.75=\boxed{13\frac{3}{4}}$$

I fixed it!

13 3/4 is the a fraction for 13.75

13x - 11y= -12 subtract 13x -11y= -12x - 12 divide by -11 y= (13/11) x 12/11 the slope intercept form

It does, but it is confusing. And the answer is not there in the homework. I will shoot the photo, and you would see that the answer isn't there, and it will be my proof and evidence that the answer is not there. So, do I shoot the photo?

This is an easier way.

To find the answer, multiply 9 by 9.

$$9*9=\boxed{81}$$

Now add the two zeros to 81 and you got your answer...

$$81\Rightarrow\boxed{8,100}$$

So, $$8,100$$ Is the answer.

Its short for 'sine'. This is a trigonometric function having to do with the ratio between the lengths of sides of a triangle.

Suppose you are driving up a hill. It's a steady incline, so for every mile you drive you rise a certain amount. The sine is the ratio of how much altitude you gain to how far you drive. There's a different sin for every angle. At angle 0, you gain no altitude per mile. At angle 90 you gain one mile of altitude for every mile you drive (actually, you'd be driving straight up, so you'd probably need a 4-wheel-drive car). But at every angle between there is some ratio, and you figure that out by multiplying how far you've driven by the sine of the angle.

So, do you need more help?

Note, DS, that we have the law of exponents that says  aⁿ / a^m   = a ^n-m

So.....look at the fraction....we have

7 * ( a² / a⁵)     and using this law, we have

7 * (a ^2-5 )  =   7 * a^-3

And remember that  a^-n   = 1 / aⁿ

So.......

7 * a^-3  =   7 * ( 1 / a³)  = (7 / a³ )

So...our answer should be

a²b - (7/a³)     

Does that help ???

$$1+1=\boxed{2}$$

Let P be the original price.

And the number sentence representing the daily decrease is given by .... P - $3N  ... where N is the number of days that have elapsed since the price = P.

So, at the end of  5 days, the price is  ...... P - $3(5)  = P - $15

So, the change is just (the ending value) - (the beginning value) = (P - $15) - (P) =   -$15

Thanks, ND......I should have not assumed so much !!!!  Your explanation is far better !!!

Try FOILing it!

UPDATE: a little more explanation than CPhill. :)

(5 + h)² = (5 + h) (5 + h)  = 25 + 10h + h²

We could set this up and solve it algebraically, but here's an easier way:

Divide 465 by 3 = 155

So  .... 155 + 155 + 155   = 465

Subtract 2 from the first number and add 2 to the last number ....  and we get....

153 + 155 + 157 = 465

And there are the three consecutive odd numbers !!!

m=(-6-10)/(3-1)=-8