The prime factorization of 18 is
2 × 3²
____
You could read this from the factor tree by looking at the leaves.
To have the outcome of 2 or more, we can roll out a 2,3,4,5 or 6.
So, the chance of getting the outcome is 2 or more is 5/6
And, 5/6 is pretty much likely to happen. (around 80% or so)
Answer:
20 people
Step-by-step explanation:
well we know that only going to the restaurant every person must pay $7
so we have only $3 extra
those 3 dollars times the number of people must give 60 dollars
so 20 people must go, to pay only $10
Answer:
a = 13, b = - 3
Step-by-step explanation:
Expand the left side and compare like terms on both sides
(3x + 1)(x - 2) ← expand using FOIL
= 3x² - 5x - 2
left side = 3x² - 5x - 2 + ax + b ← combine like terms
= 3x² + x(a - 5) + b - 2
right side = 3x² + 8x - 5
For the 2 sides to be equal then
a - 5 = 8 ( add 5 to both sides )
a = 13
and
b - 2 = - 5 ( add 2 to both sides )
b = - 3
