CPhill

So 67% of 172 =

.67 x 172 = $115.24  = child ticket cost

So

2 adult tickets x their cost(172) + 4 child tickets x their cost(115.24) = $804.96

So

2/3x = (3/2)^-1

2/3x = (2/3)     cross multiplying, we get

6 = 6x

So....... x = 1

Remember...... (a/b)^-1 = (b/a)

295 / 48  = 6.15 buses....but since we can't have a "part of a bus," we need 7.

Using the arcsin function

asin(4/5) = about 53.13 degrees

This angle could lie in the 2nd quadrant, too=  (180 - 53.13) = 126.87 degrees

The slant height is irrelevant

The area of the base = 12 x 12 = 144m²

So we have

3 (6.25) = 4s   divide both sides by 4

(3/4) (6.25) = s

s = 4.6875 lbs.

I'm going to ignore your question.......you can ask it later......without the language.............

2^(-3) =

(1) / (2^3)  =

1/8

Remember.......a^-n = 1 / aⁿ

Let's just subtract the second equation from the first

-5y = 14     divide both sides by -5

y = -14/5

Now using 2x + 10y = 10  and substituting -14/5 for y, we have

2x + 10 (-14/5) = 10

2x - 28 = 10     add 28 to both sides

2x = 38     divide by 2 on both sides

x = 19

So x = 19 and y = -14/5

You should verify these answers in both equations!!

There is nothing to "solve"     We can "simplify" it as:

1 +12 - 3x =

13 - 3x

We have to have an "=" sign someplace in order to "solve" something....