25 ok with that dude or girl
Answer: Since the lowest common multiple of 140 and x is 420: because 140 divides into 420 three times, x must contain a 3. Since x contains both 20 and 3 as factors, x is 20 · 3 = 60.
Answer:
it is an increase because it is going up
Step-by-step explanation:
it is a 122.222% increase
132 = 1/2x + 2(x - 9)
132 = 1/2x + 2x - 18
132+ 18 = 2.5x
150 = 2.5x
150/2.5 = 60......price of adult ticket
a childs ticket is 9 less then adults......so 60 - 9 = 51 <== childs ticket
Answer:
3 * 10^6 if the answer is 3.64 * 10^6, you really ought to argue the meaning of estimate with your instructor.
Step-by-step explanation:
This is a very valuable question. Put your calculator away when you answer it. Using a calculator is sort of cheating.
1.3 * 10^3 roughly is roughly 1 * 10^3
2.8*10^3 hours is roughly 3 * 10^3
Forget the powers for now and just work with the 1 and 3
1*3 equals 3.
10^3 * 10^3 = 10^6 when the base of two numbers is the same (10 in this case) then the powers are added.
10^(3 + 3) = 10^6
So the answer is roughly 3*10^6
Now you can take out your calculator and get the answer.
1.3*10^3 * 2.8 * 10^3 = 3.64 * 10 ^ 6
Notice that the estimate (done in my head) is close enough to tell you what the answer should be. On a test, that's a very handy skill.