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4vir4ik [10]
2 years ago
13

How do you begin to work out math

Mathematics
1 answer:
ipn [44]2 years ago
3 0

Answer:

Give urself a mental break and use brainly! please mark me brainliest

Step-by-step explanation:

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There are 1920 fence post used in a 12 kilometer stretch of fence how many fence post are used in 1 kilometer of fence
Nonamiya [84]
160 posts are used per 1 km
3 0
3 years ago
Only do 16 pls help me i will give u brainliest if you help
USPshnik [31]

Answer:

16)  18.5 hours

Step-by-step explanation:

40gifts = 5hrs

40/5 = 8

8gifts = 1hr

148/8 = 18.5

In 18.5 hours, 148 gifts are wrapped.

hope this helps and is right. p.s. i really need brainliest :)

8 0
2 years ago
Here are 100 seats on an airplane, and each of 100 passengers has a ticket for a different seat. The passengers line up to board
Kryger [21]

Answer:

There are 1% probability that the last person gets to sit in their assigned seat

Step-by-step explanation:

The probability that the last person gets to sit in their assigned seat, is the same that the probability that not one sit in this seat.

If we use the Combinatorics theory, we know that are 100! possibilities to order the first 99 passenger in the 100 seats.

LIke we one the probability that not one sit in one of the seats, we need the fraction from the total number of possible combinations, of combination that exclude the assigned seat of the last passenger. In other words the amount of combination of 99 passengers in 99 seats: 99!

Now this number of combination of the 99 passenger in the 99 sets, divide for the total number of combination in the 100 setas, is the probability that not one sit in the assigned seat of the last passenger.

P = 99!/100! = 99!/ (100 * 99!) = 1/100

There are 1% probability that the last person gets to sit in their assigned seat

7 0
2 years ago
If f(x)= 3/x+2- square root x-3, complete the following statement: f(19)=
I am Lyosha [343]

f(7)≈1.6666                Please mark me as brainliest

round

f(7)=1.67

The domain of the function is the set of all the values of x that would allow the function to have real values. Since the radicand is x - 3, the value of x cannot be less than 3 because that would make the value of sqrt (x - 3) an imaginary number. Thus, the domain should be all numbers GREATER than or equal to 3.

8 0
3 years ago
What time is it 7 in a half hours before 2:12 am
scoray [572]
6.42 pm is the answer. You can think backward 8 hours before 2:12 am, which is 6:12pm. Now, go 'forward' a half an hour<span>, to 6:42pm. Answer: 6:42pm.</span>
5 0
3 years ago
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