Answer:
Step-by-step explanation:
work with the ratios
2x/x+5 = 3/4
Cross multiply
2x *4 =3(x+5)
8x = 3x + 15 ( minus 3x from both sides)
<u>-3x -3x</u>
5x = 15
Divide both sides by 5 to isolate the variable
x = 3
x equals 1.5/ one point five
Answers:
1. 40
3. 63
4. 100
5. 40
6. 72
Formulas:
3.
4.
8
Mary needs 8 boxes to put 96 muffins in dozens so 96÷12 gives you 8
38.2 %
120/100 = 1.2 (average time)
(1.2 - 1.5)/1 = -.3
z table value for "-.3" is .3821
