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Vesna [10]
2 years ago
15

Type the correct answer in the box. Use numerals instead of words. For this item, any answers that are not whole numbers should

be entered as a decimal, rounded to the tenths place. Brian's school locker has a three-digit combination lock that can be set using the numbers 5 to 9 (including 5 and 9), without repeating a number. The probability that the locker code begins with a prime number is %. The probability that the last digit of the locker code is an odd number is %.
Mathematics
2 answers:
Colt1911 [192]2 years ago
7 0

Answer: prime number-40%, odd number 60%

Step-by-step explanation:I just took the test and got it right

marishachu [46]2 years ago
3 0

Answer:

Part A : 40%

Part B : 60%

Step-by-step explanation:

Brian's school locker has a three-digit combination lock that can be set using the numbers 5 to 9 (including 5 and 9).

This means 5,6,7,8,9 a total of 5 numbers.

Now out of these 5 numbers only 2 are prime numbers i.e 5 and 7.

So, The probability that the locker code begins with a prime number is = \frac{2}{5}*100=40%

The probability that the last digit of the locker code is an odd number is=

\frac{3}{5}*100 =60%

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Use the formula A = p( 1 + x)^n.

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5 0
2 years ago
Five times the sum of e and 4 is equal to -7.
andre [41]
5+ 4e = -7 is the correct answer.
5 0
2 years ago
A three-digit number ends in number 7. If you put the number 7 in the first position, the number will increase by 324. Find the
liq [111]

Answer:

<u>The original three-digit number is 417</u>

Step-by-step explanation:

Let's find out the solution to this problem, this way:

x = the two digits that are not 7

Original number = 10x+7

The value of the shifted number = 700 + x

Difference between the shifted number and the original number = 324

Therefore, we have:

324 = (700 + x) - (10x + 7)

324 = 700 + x - 10x - 7

9x = 693 - 324 (Like terms)

9x = 369

x = 369/9

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<u>The original three-digit number is 417</u>

5 0
2 years ago
the united states has 12,383 miles of coastline.if 0.8% of the coastline is located in georgia,about how many miles of coastline
Sever21 [200]

Answer:

825.5 miles of coastline

Step-by-step explanation:

The United States has 12383 miles of coastline.

0.8% of the coastline is in Georgia

Total number of coastline in Georgia will be

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0.0667 x 12383

825.5

So there are 825.5 miles of coastline Georgia

6 0
2 years ago
Paul developed a roll of film containing 36 pictures. If he made 2 prints each of half of the pictures and 1 print of each of th
Monica [59]

Answer:

54

Step-by-step explanation:

Total pictures in the roll = 36

half of the roll = 1/2 of the total pictures in the roll = 1/2 * 36 = 18

Given Paul made 2 prints of each of the half pictures

no. of prints made of half of the pictures = 18*2 = 36

No. of prints left after the half of the roll is printed for two prints= 36-18 = 18

No. of prints made of rest of the pictures 1

Therefore , no of prints made of rest half of pictures = 18*1 = 18

Total prints made = 36 + 18 = 54.

Thus, Paul made 54 prints in all.

8 0
2 years ago
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