1.mean 5
Median 10
Mode 11,6,12
Answer:
$75.08
Step-by-step explanation:
x over 57.75 = 30 over 100
57.75 * 30
1732.5 / 100
17.325
57.75 + 17.325
75.075
Simplify = $75.08
The lines through side AB and side AC tell us that both sides are congruent, and by the isosceles triangle theorem that means that m∠ABC = m∠ACB so
m∠ABC = 40
Since all 3 angles in a triangle always add up to 180, we know that
(40) + (5x) + (2y + 20) = 180
We substitute our known value for 5x and solve for y:
40 + 40 + 2y + 20 = 180
2y + 100 = 180
subtract 100 from both sides
2y = 80
divide both sides by 2 to get our answer:
y = 40
The answer is D (i have to type at least 20 letters soooooooooo)
Change 1 2/3 to 5/3 because it is easier to add and subtract fraction when they are improper. This makes -1/3-5/3, -1-5=-6, so the equation equals -6/3 which simplifies to -2.
