CPhill

4(8-z) - 50 = 26z - 6 (3+5z)      simplify

32 - 8z - 50 = 26z - 18 - 30z     combine like terms

-18 - 8z = -4z - 18     add 18 to both sides

-8z = -4z   divide by -4 on both sides

2z = 0        divide by 2 on both sides

z = 0

1296^3/4 =

(1296^1/4)³ =

(6)³ =

216

Here's a nice method for this....it is easy to understand and apply.....!!!

9 1/6 isn't a whole number...we can write it as an improper fraction or as a decimal.

For the improper fraction, multiply the 6 in the denominator times the whole number 9 = 54 and add the 1 in the numerator = 55....put this result over the denominator and we get 55/6

 And 1/6 = .1666

So....... 9 + .1666  =   9.1666    ...the "6" repeats...!!!

Rate  x Time  = Distance

If he walks x hrs., then he runs  1.5 - x  hours

Then

3mph *(x) hrs. + 5m[h * (1.5 - x) hts  = 6 miles    .....just for the heck of it, let's solve this

3x + 7.5 - 5x  = 6

-2x + 7.5 = 6       subtract 7.5 from each side

-2x = -1.5            divide by -2 on each side

x = -1.5 / -2   =    3/4

So he walks 3/4 of an hour. And he runs for the same time. And the distance he walks is

3mph * (3/4 hr) = 9/4 mi. = 2.25 miles.

And the distance he runs is

5mph * (3/4) = 15/4 = 3.75 miles

And 2.25 mi and 3.75 mi = 6 mi.

Since there are 5280 ft in a mile and 3 ft in a yard, we have

5280 / 3 = 1760 yds

6x+3=2x+8

Subtract 2x and 3 from both sides

4x = 5        divide both sides by 4

x = 5/4

66%

7h + 50 > 99

2a + 3 ≤35

Note that Kayla's maximun possible age is 16