Class Math

Question 1

(a /b) / c = a / (b/c)

Answer 1

(a/b) / (c/1) = (a/1) / (b/c)
(a/bc) = (ac/b)
(1/bc) = (c/b)
(1/c) = c
1 = c^2
c = +-1

Question 2

Stacked Division

(a/b) / (c/d) = ?

Answer 2

(a/b) * (d/c)

Question 3

[(.0036)(2.8)] / [(0.04)(0.1)(0.003)] = ?

Answer 3

[(3610^-4)(2810^-1)] / [(410^-2)(110^-1)(310^-3)] =
[[(36)(28)] / [413]] * [(10^-4 * 1-^-1) / (10^-20^-1*10^-3)] =
** [10^-5 / 10^-6]
84 * 10^1
– ** How would you do this by moving decimals?

Question 4

y percent

Answer 4

y/100

Question 5

Backwards Solve

Answer 5

Start with B & D

Plug in the numbers and go Higher or Lower

Question 6

x is m percent of y

Answer 6

(m/100)y

Question 7

J = D ?

Answer 7

1.15J =D
does not =
J=.85D