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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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Solve for x. 2 ( x + 1 ) = 12
Evgen [1.6K]

2 ( x + 1 ) = 12

Use distributive property:

2x + 2 = 12

Subtract 2 from both sides:

2x = 10

Divide both sides by 2:

X = 5

5 0
3 years ago
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When a car travels a distance, d, of 2 miles in 2 minutes, t, what is the acceleration, a, of the car?
Sphinxa [80]
The answer is 2m/s.
7 0
3 years ago
A driver who drives at a speed of r mph for t hr will travel a distance d mi given by dequalsrt mi. How far will a driver travel
liubo4ka [24]

Answer:

At a speed of 57 mph for 8 hr a driver will travel 456 mi

Step-by-step explanation:

Here we have a summary of the letters for each variable:

Speed ---> r          (in units of mph)

Time ---> t            (in units of hr)

Distance ---> d     (in units of mi)

These three variables are related by the next formula:

d = rt

In the data they give to you: 57 mph and 8 hr, they are telling you the r and the t, respectively:

r = 57 mph

t = 8 hr

The only thing you have to do is replace the values:

d = rt    ---->     d = 57 mph x 8 hr

                        d = 456 mi

5 0
3 years ago
Quadrilateral ABCD is inscribed in circle O.
creativ13 [48]

Opposite angle of a quadrilateral add up to 180 degrees.

This means Angle A plus Angle C equal 180.

We can solve for X using that, then solve for Angle B.

2x-7 + x +4 = 180

Simplify:

3x -3 = 180

Add 3 to each side:

3x = 183

Divide both sides by 3:

x = 183 /3

x = 61

Now we know x, replace x with 61 in the equation for Angle B:

Angle B = 2x+3 = 2(61) +3 = 122 +3 = 125 degrees.

7 0
3 years ago
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sladkih [1.3K]

Answer:

The answer is option B.

Step-by-step explanation:

( -  \frac{1}{2} ) ^{ - 3}  = ( - 2) ^{3}  =  - 8

Hope this helps you

4 0
3 years ago
Read 2 more answers
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