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3 years ago

BRAINLIEST for whoever gets this correct!

Mathematics

2 answers:

11111nata11111 [884]3 years ago

7 0

Answer: Graph B

Step-by-step explanation:

ratelena [41]3 years ago

5 0

Answer:

Step-by-step explanation:

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a team of 10 players is to be selected from a class of 6 girls and 7 boys. match each scenario to its probability

mars1129 [50]

Step-by-step explanation:

The selection of r objects out of n is done in

many ways.

The total number of selections 10 that we can make from 6+7=13 students is

thus, the sample space of the experiment is 286

"The probability that a randomly chosen team includes all 6 girls in the class."

total number of group of 10 which include all girls is C(7, 4), because the girls are fixed, and the remaining 4 is to be completed from the 7 boys, which can be done in C(7, 4) many ways.

P(all 6 girls chosen)=35/286=0.12

"The probability that a randomly chosen team has 3 girls and 7 boys."

with the same logic as in A, the number of groups were all 7 boys are in, is

so the probability is 20/286=0.07

"The probability that a randomly chosen team has either 4 or 6 boys."

case 1: the team has 4 boys and 6 girls

this was already calculated in part A, it is 0.12.

case 2, the team has 6 boys and 4 girls.

there C(7, 6)*C(6, 4) ,many ways of doing this, because any selection of the boys which can be done in C(7, 6) ways, can be combined with any selection of the girls.

the probability is 105/286=0.367

since case 1 and case 2 are disjoint, that is either one or the other happen, then we add the probabilities:

0.12+0.367=0.487 (approximately = 0.49)

"The probability that a randomly chosen team has 5 girls and 5 boys."

selecting 5 boys and 5 girls can be done in

many ways,

so the probability is 126/286=0.44

Did this help??

8 0

3 years ago

A product test is designed in such a way that for a defective product to be undiscovered, all four inspections would have to fai

Marina86 [1]

Answer:

d. 99.9%

Step-by-step explanation:

The probability of not catching a defect for each inspection is 100% minus the probability of catching a defect. The probability that a defect is not caught in all four inspections is the product of each inspection's individual probability:

$P(D) = (1-0.9)*(1-0.8)*(1-0.12)*(1-0.95)\\P(D) = 0.0008$

The probability of catching a defect is given by:

$P(C) = 1 - P(D)\\P(C) = 1 - 0.0008\\P(C) = 0.9992 = 99.9\%$

There is a 99.9% probability of catching a defect.

5 0

4 years ago

If y = 4x, what is y if the x = 5?

Helga [31]

Answer:

its should be 20

Step-by-step explanation:

8 0

3 years ago

Help plz:))) I’ll mark u brainliest <br> ASAP!!!

Elodia [21]

Answer:

16=x

Step-by-step explanation:

the two sides are equal, soo i set them equal to each other and add 18 to 16 then divide each side by two and get 16 = x

5 0

3 years ago

The altitude of Death Valley California is 282 ft below sea level of hot air balloon is launched From The Bottom Of Death Valley

asambeis [7]

Answer:

177 ft below sea level.

Step-by-step explanation:

Initial altitude of the hot air balloon = 282 below sea level

Rate of rise of balloon = 10 ft / second

Time = 12 seconds

Total rise in 12 seconds = Rate of rise of balloon $\times$ Time

$\Rightarrow 10 \times 12$ = 120 ft

Now, we will have to subtract to find the new altitude.

New altitude = 282 - 120 = 162 ft

Now, it is given that balloon Captain lowers the balloon 15 ft.

To find the final altitude, we will have to add it to the previous altitude.

Therefore, the final altitude = 162 + 15 = <em>177 ft below sea level </em>

6 0

3 years ago