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IceJOKER [234]
3 years ago
12

The lock of a safe has a wheel of 8 letters. A unique combination of 3 letters opens the safe. what is the probability that a bu

rglar can open the safe on the first attempt?
Mathematics
1 answer:
LiRa [457]3 years ago
5 0

Answer:

1/512

Step-by-step explanation:

The robber has a 1/8 probability of getting each letter right. There are three letters, so you would multiply 1/8x1/8x1/8.

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Select the correct answer.
Damm [24]

Answer:

there are 83 percent of books

5 0
2 years ago
Joe bikes at the speed of 30 km/h from his home toward his work. If Joe's wife leaves home 5 mins later by car, how fast should
Dahasolnce [82]

Answer:

45 mph

Step-by-step explanation:

This is a really good question to know the answer to. It is tricky and a bit indirect (which means you have to find something else before you can find the speed of the car.)

Let's keep track of what he does in the time allotted.

How far does Joe go in 5 minutes? That's the amount of time he's on the road before she is.

convert 5 minutes into hours. 5 minutes * 1 hour / 60 minutes = 1/12 of an hour

d = r*t

r = 30 km/hour

t = 1/12 hour

d = 30 km/hr * 1/12 hour = 2.5 km

Now she's about to start. She wants to catch him in 10 minutes

d = r*t

r = x mph

t = 10 minutes = 10 minutes * 1 hour * 60 minutes = 1/6 of an hour.

How far does he go in the 10 minute time?

d = 30 * 1/6 = 5 km

What is his total distance

5 km + 2.5 km = 7.5 km

Finally how fast does she need to go to catch him

d = 7.5 km

r = ?   This is what you are trying to find

t = 1/6 of an hour

d = r*t

7.5 km = r * (1/6)hour             divide by 1/6 hour

7.5 km // 1/6 hour = r

r = 7.5 * 6 = 45 mph

6 0
3 years ago
A laptop cost 11,200 is on sale on 30%. How much is the change?
ASHA 777 [7]

Answer:

$3,360.

Step-by-step explanation:

To find the change all you need to do is multiply 11,200 by 0.3, and you get the answer of the change of the price now being $3,360 lower than it's original price, $11,200.

3 0
3 years ago
Read 2 more answers
Nancy and Luke are drawing plans for
Simora [160]
This one looks tricky let me find out
4 0
3 years ago
What is 1,495 ÷ 45 <br><br> step by step <br><br>without a decimal<br>​
Sidana [21]

Answer:

Step-by-step explanation:

1495/45

factor out what you can

1495/45=299/9

3 0
3 years ago
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