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Novosadov [1.4K]
3 years ago
15

A math class has 12 female students Out of a total of 20 students in the class, what is the probability of randomly selecting a

male student from the class?
12%

the answers are 12%,40%,50%,and 60%

you have to explain your answer to get most Brainly
Mathematics
2 answers:
Pavlova-9 [17]3 years ago
5 0

Answer:

40%

Step-by-step explanation:

8/20 times 5 = 40/100 = 40%

k0ka [10]3 years ago
3 0
40%

If there are 12 girls out of 20 total students in the class, than 12/20 of the class are girls

If there are 8 boys in the class, than 8/20 of the class are boys.

If you randomly picked a student from the class, hypothetically 8 out of 20 times it would be a boy because that is how many boys there are in class versus girls. 8/20 is the probability. To find the percentage, divide 8/20, then multiply that by 100.

8/20 = 0.4
0.4 x 100 = 40%
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Help please inequalities are kicking my butt any help is greatly appreciated thank you in advance
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Answer:

Correct option is (C)

Step-by-step explanation:

we are given that -Tim design a pair of shorts,S, and T-shirts,t.

Tim sell Sorts for $12 and T-shirts for $8 each.

Tim can work atmost 18 hours a day so we can write time\leq 18

Time taken to design a T-shirt is 30 minutes and for Shorts, it is 45 minutes.

\frac{30}{60}t+\frac{45}{60}s\leq   18\\\text{Multiply both the sides by 60}\\30t+45s\leq 1080\\\text{Divide both the sides by 45}\\s+0.66t\leq 24\\\text{Subtract 0.66t from both the sides}\\s\leq 24-0.66t

He must design 12 itesm each day, so we can write t+s\geq 12

Further it can be written as

t+s\geq 12\\\text{Subtract t from both the sides}\\s\geq 12-t

Also Tim can not design more than 30 items in one day, so we can write

t+s\leq 30\\\text{Subtsract t from both the sides}\\s\leq 30-t

Hence from the above equations , its claer that

s\geq 12-t,s\leq 30-t,s\leq 24-0.66t,s\geq 0,t\geq 0

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