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USPshnik [31]
3 years ago
5

A teacher randomly selects one student from a group of students where 12 are wearing a black shirt, 8 are wearing a red shirt, a

nd 12 are wearing a blue shirt.
What is the probability that the selected student is wearing a blue shirt?

Enter your answer as a fraction, in simplified form, in the box.
Mathematics
2 answers:
Ket [755]3 years ago
6 0
Probability=number of specific outcomes/number of possible outcomes...

P(B)=B/T=12/(12+12+8)

P(B)=12/32

P(B)=3/8
Art [367]3 years ago
6 0

Answer:

3/8 is the most likly answer

Step-by-step explanation:

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Jamie put 2 3/12pounds of green apples
yawa3891 [41]

Answer:

5 3/4

Step-by-step explanation:

So, lets add the whole numbers together and the fractions together.

2+3=5

3/12+5/12=8/12

8/12 can be simplified to 3/4

so 5 3/4

(Please give brainliest if this helped you, I'm trying to get an achievement)

5 0
3 years ago
Anna wants to take fitness classes. She compares two gyms to determine which would be the best deal for her. Fit Fast charges a
mestny [16]
Fit Fast: a set feet per class => y = Ax

Stepping Up: a monthly fee plus an additioal fee per class => h = Bx + C

You can discard the second and the fourth systems because  they do not have the form established from the statement.

The first system produce an obvious result given that is represents an option that is always better than the other 5.5x will be lower than 7.5x + 10 for any positive value of x, and so there is no need to make any comparission.

The third system is

y = 7.5x and y = 5.5x + 10 which need to be solved to determine when one rate is more convenient than the other.

Answer: y = 7.5x and y = 5..5x + 10



4 0
3 years ago
Read 2 more answers
Use completing the square to solve for x in the equation (x minus 12) (x + 4) = 9. x = –1 or 15 x = 1 or 7 x = 4 plus-or-minus S
Scrat [10]

Answer:

x = 4 ± \sqrt{73}

Step-by-step explanation:

Given

(x - 12)(x + 4) = 9 ← expand the left side using FOIL

x² - 8x - 48 = 9 ( ad 48 to both sides )

x² - 8x = 57

To complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(- 4)x + 16 = 57 + 16

(x - 4)² = 73 ( take the square root of both sides )

x - 4 = ± \sqrt{73} ( add 4 to both sides )

x = 4 ± \sqrt{73}

4 0
3 years ago
Read 2 more answers
Please help me guys​
seraphim [82]

Area of pond:

A=\pi r^{2}

r=1,5m

A=3,142*1,5*1,5=7,0695

Area of pond with path

B=\pi r^{2}

r=50 cm+1,5m=0,5m+1,5m=2m

B=3,142*2*2=12,568

Area of path:

12,568-7,0695=5,4985=5,50

8 0
3 years ago
Read 2 more answers
Numbers that are easy to compute using mentally are called?
SVEN [57.7K]
The answer of that is called a compatible number. I hope this helps! :)
8 0
3 years ago
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