3.5=.12x
3.5*.12 you multiply .12 and 3.5 because each ounce is equal to 12 cents
.42 is how much she spent on rice
Answer:
Step-by-step explanation:
x + 3y = 24.....multiply by -1
5x + 3y = 36
------------------
-x - 3y = -24 (result of multiplying by -1)
5x + 3y = 36
------------------add
4x = 12
x = 12/4
x = 3 <=======
x + 3y = 24
3 + 3y = 24
3y = 24 - 3
3y = 21
y = 21/3
y = 7 <========
So then what is the question?
Answer:
∠BCD = 34°
Step-by-step explanation:
∠FCE + ∠FCA + ∠ACB = 180° ( straight angle ), thus
∠FCE + 90 + 56 = 180, that is
∠FCE + 146 = 180 ( subtract 146 from both sides )
∠FCE = 34°, hence
∠BCD = ∠FCE = 34° ( vertical angles )
