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Leya [2.2K]
3 years ago
7

A baseball player hit the ball 42 times out of the last 150 times at bat. What is the player's experimental probability of getti

ng a hit the next time at bat?
Mathematics
1 answer:
nataly862011 [7]3 years ago
8 0

Answer:

0.28.

Step-by-step explanation:

It is given that a baseball player hit the ball 42 times out of the last 150 times at bat.

Total no of times he bat = 150

No. of times he hit the ball = 42

We need to find the player's experimental probability of getting a hit the next time at bat.

\text{Required Probability}=\dfrac{\text{No. of times he hit the ball}}{\text{Total no of times he bat}}

\text{Required Probability}=\dfrac{42}{150}

\text{Required Probability}=0.28

Therefore, the required probability is 0.28.

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There are a total of 72 students in a drama club and a yearbook club. The drama club has 12 more students than the yearbook club
svetlana [45]
VARIABLES:
[x] Yearbook Club (expression: x)
[y] Drama Club (expression: x + 12)

EQUATIONS:
#1 x + y = 72
#2 y = x + 12

Now we shall use the method of substitution to solve.

FINDING X:
#1 x + (x + 12) = 72
#2 2x + 12 = 72
#3 2x = 60
#4 x = 30

The amount of students in the yearbook club: 30
The amount of students in the drama club: 72 - 30 = 42

If you can, please give me brainliest. Thank you!

5 0
3 years ago
A square of area 36cm is cut out to make two rectangles, which we'll call A and B. The ratio is 2:1 for A: B. Work out the lengt
mr_godi [17]

Answer:

*by length i mean height

Length of A = 6

Width of A = 4

Length of B = 6

Width of B = 2

Step-by-step explanation:

You can approach this question in many different ways, but this is how i did it. I prefer to draw diagrams whenever i can, it just makes it easier, but its your choice what you choose to do.

Since its a square, we know that both the original length and width are 6.

Depending on which way you cut it, either the length or width will stay the same for both rectangles, but you'd still be right. I assumed they were cutting it down the middle, so the length stays 6 for both A and B.

To find the width of A and B:

The width of the square is 6 and i divided that by 3, becauce the ratio is 2:1, which has three "parts" to it (2+1=3).

So now we have 3 parts, each with a width of 2. From the ratio, we know that the width of A has to be double the width of B.

From this i get, width of A = 4 and width of B =2.

If you check this against the ratio 2:1, you'll see its correct because 4:2 simplifies down to 2:1 as well.

* if you want to be extra sure of you answer you can do some trial and error with different values for B and see if it fits the ratio, but theoretically, nothing else should work.

So the final answer is:

Length of A = 6

Width of A = 4

Length of B = 6

Width of B = 2

Hope that helped :)

5 0
3 years ago
The area of a circle is 77.28m2.<br> Find the length of the diameter rounded to 1 DP.
allochka39001 [22]

Answer:diameter=9.92m

Step-by-step explanation:

Area=77.28

π=3.14

Area=π x (d/2)^2

77.28=3.14 x (d/2)^2

Divide both sides by 3.14

77.28/3.14=(3.14x(d/2)^2)/3.14

24.6=(d/2)^2

Take them square root of both sides we get

d/2=√(24.6)

d/2=4.96

d=4.96 x 2

d=9.92

4 0
3 years ago
I need help. I don’t understand this
vredina [299]

Answer:

you divide the composite shape into 2 shapes, one which is 12x10, an one which is 4x5

Step-by-step explanation:

6 0
3 years ago
Diana bought some art supplies the total came to $38.00 there is a 6 1/2 sales tax how much did she pay?
xz_007 [3.2K]

Answer:

Diana payed $31.50 for art supplies without tax.

Step-by-step explanation:

Total = 38.00

Sales Tax = 6.5

38.00 - 6.50 = $31.50

5 0
3 years ago
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