Answer:
the 2nd and 5th one
Step-by-step explanation:
14 < n-3
add 3 to each side
14+3=17
-3+3 cancels out
we're left with 17<n
thus meaning the second and fifth one are correct
Answer:
2:1
Step-by-step explanation:
90-60 = 30 red marbles
blue:red → 60:30 → 2:1
Answer:
B
Step-by-step explanation:
Euler's formula for polyhedra states that
F + V - E = 2
where F is faces, V is vertices and E is edges
Substitute the values given and solve for F, that is
F + 13 - 26 = 2
F - 13 = 2 ( add 13 to both sides )
F = 15 → B
Answer:
Javier’s account has $282.5 at the end of the three months.
Step-by-step explanation:
final = initial - 7.5x
initial is the initial amount of money in the account, so 305. x is the number of months that have passed. Since Javier doesn't deposit any more money durning that time, the amount in the bank will always be less than 500 we don't have to consider anything else. We just sub initial with 305 and x ( the number of months) with 3 to get the answer. So,
final = 305 - 7.5 * 3 = 282.5
He still has half way more to go because 3/8+1/8=4/8 or 1/2. So he has 1/2 of the way left to walk.
