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Leno4ka [110]
3 years ago
12

What is the probability of correctly guessing at random exactly 5 correct answers?round your answer to the nearest whole number.

Mathematics
1 answer:
Reil [10]3 years ago
8 0

Answer: There are 20 sets of numbers in the picture, one set is all 1's, which would be having all 5 answers correct.

Divide 1 by 20 to get 5%.

The answer is A.

Step-by-step explanation:

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4. Uncle Rick, who is numbering seats at a wrestling arena, is assigned a section of 12 rows of
nydimaria [60]

Answer:

Step-by-step explanation:

Each rows contain 12 seats.

No.of seats in 12 rows = 12 *12  = 144 seats

5 0
3 years ago
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A group of 2 adults and 4 children spent $38 on tickets to a museum. A group of 3 adults and 3 children spent $40.50 on tickets
mrs_skeptik [129]

Answer:

adult $8.00

child $5.50

Step-by-step explanation:

Let the price of 1 adult ticket = x.

Let the price of 1 child ticket = y.

2x + 4y = 38

3x + 3y = 40.5

Multiply the first equation by 3. Multiply the second equation by -2. Then add them.

         6x + 12y = 114

(+)      -6x - 6y = -81

-----------------------------

                  6y = 33

y = 33/6

y = 5.5

2x + 4y = 38

2x + 4(5.5) = 38

2x + 22 = 38

2x = 16

x = 8

Answer:

adult $8.00

child $5.50

4 0
3 years ago
Read 2 more answers
List least to greatest <br> -3/8, 5/16, -0.65, 2/4
amid [387]
-0.65
-3/8
2/4
5/16
I hope this is right, the negatives should go first because you are taking away, then positives 
8 0
3 years ago
How do you do this problem?
faust18 [17]

The volume of the original cylinder is

... V = π·r²·h

For r=1 and h=1, this is

... V = π·1²·1 = π

For the new cylinder, the volume is 1.089 times that amount.

... V = 1.089π = π·1.1²·(1-k)

... 1.089/1.21 = 1-k

... k = 1 - 1.089/1.21 = 1 - 0.9 = 0.1 = 10%

The appropriate choice is (B) 10.

7 0
3 years ago
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Solve it<br><img src="https://tex.z-dn.net/?f=%20%5Csf%20%5C%3A%205%28x%20-%209%29%20%2B%203%28x%20%20%2B%204%29%20%3D%202%28x%2
JulsSmile [24]

Answer:

5x - 45 + 3x + 12 = 2x - 12 \\ 8x  -  33 = 2x - 12 \\ 6x = 21 \\ x = 3.5

6 0
3 years ago
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