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Let the number  = x

So 7 increased by a number = 7 + x

And the difference berween the number and 2 = (x - 2)   ...so twice this difference  = 2(x - 2)

And these two things added together =

(7 + x) + 2(x - 2)

So 'b" is the correct answer

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(1,700,000 x 1/10)km²  = 170,000km²

16+5*w=31     subtract 16 from both sides

5*w = 15         divide both sides by 5

w = 15/5  = 3

"b" is the correct answer  ...  ( quotient means "divide' )

So we have .654654.....let this  = x

Multiply this by 1000....so we have

1000x = 654.654

Subtract x from both sides

1000x - x  = 654.654 - x  

999x = 654   divide both sides by 999

x = 654/999

Let n be the number of awards she won in softball

Then the number of awards in tennis was n + 3

And the number of awards in soccer was n + 1

And the total awards in lacrosse was 6 more than soccer = (n + 1) + 6

So the total number of awards is given by

n + (n + 3) + (n + 1) + (n + 1) + 6 = 31         simplify this

4n + 11 = 31       subtract 11 from both sides

4n = 20               divide both sides by 4

n = 5

And the number she won in tennis was (n + 3) = (5 + 3) = 8

do you mean X^2+y^2=13? or 2x+2y=13?   If #1 X=3  If #2 X=4.5

The total average is given by ... (the total hits over 2 seasons) / (the total at-bats over 2 seasons)

So we have

(153 + 172) / (572 + 576) = 325 / 1148  = about .283  or about  28.3%

I think we have

( ³√21 )⁴ =

[(21)^1/3 ]⁴      and using the law of exponents  (a^m)ⁿ  = a^m*n     ....we have.....

21^4/3             which equals the right hand side

What equation are you talking about?

You can evaluate this using the on-site calculator.......

Note that we are choosing any 3 b***s from 14

And the number of total possible sets of these  = C(14,3) = 364

But the only sets we're interested in are the ones where we have chosen 2 blue b***s out of 5 and then selecting 1 other ball from the remaining 9.

So the total number of these possible sets = C(5,2)*C*9,1) = 90

So the total probability = (number of sets we're interested in) / (total number of possible sets) =  90/364 = about 27.4%

Your answer is called undefined meaning unable to divide.

5 apples in all mr. Anonymous.

Let x be the number of tickets sold

So, the total amount of money we take in = price per ticket x number sold

And we want to make more than $730

So we have

$6x > 730  divide both sides by 6

x > about 121.66 tickets or 122 tickets

Since you have 3 and John has 2. You are going to add 3 and 2 together. And that would equal 5!

3+2=5

We can put this into y= mx + b     to find the slope (m)

So we have

2x - 3y = 8       subtract 2x from each side

-3y = -2x + 8   divide each side by -3

y = 2/3x  - (8/3)

So the slope of this line = 2/3

And the slope of a line perpendicular to this will have a negative reciprocal slope =  -3/2

I know the answer but if you don't mind, do you go to booneville middle school?

OK

Let t be the time you walked ....so (45 - t)  equals the time you rode.....and let D be the total distance traveled

So we have

[The time you walked] x [the rate you walked] + [the time you rode] x [the bus rate] = the total distance...in math terms, we have

[.06mi/min]*[t] + [.5mi/min]*[45 - t] = D       and simplifying. we have

.06t + 22.5 - .5t = D     simplify again

-.44t + 22.5  = D          ( and if we knew the distance, we could solve for the time )

8n + 3 = 5

Subtract 3 to get n alone

8n = 2

Now divide by n to get the answer.

n = 1/4

129,211,732,691

1/12 + 1/50

Here's an easy way to do this (we'll have to reduce at the end)

Cross-multiply the 50 in one denominator with the 1 in the other numerator. Then do the same with the 12 in the other denominator with the 1 in the other numerator. Then, add these two results

So we have   50*1  + 12*1 = 62

Now, put this result over the product of the denominators = 12*50 = 600

So we have

62/600   reduce this by dividing the numerator and the denominator by 2......this gives us...  31/300 .....and there's your answer !!!

A power to a power is the same as multiplying the two powers. So 10^10^50 is the same as 10^500, which is 10 with 500 zeros after it. That's it :)