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Ludmilka [50]
3 years ago
11

Simplify.(-w^2 + 4w - 7)+(2w+3w+6)​

Mathematics
1 answer:
stiv31 [10]3 years ago
6 0

Answer:

-w2 + 9w - 1

..............

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Mrs. Braddock has a bag containing 6 lipsticks, 4 eye shadows, 6 eye liners, and 5 mascaras. She will randomly choose one item f
Slav-nsk [51]

Answer:

The probability that she will not pull lipstick is 71%.

Step-by-step explanation:

The probability of an event <em>E</em> is the ratio of the favorable number of outcomes to the total number of outcomes.

P(E)=\frac{n(E)}{N}

Here,

n (E) = favorable number of outcomes

N = total number of outcomes

The contents in Mrs. Braddock's bag are:

Number of lipsticks = n (L) = 6

Number of eye shadows = n (S) = 4

Number of eye liners = n (E) = 6

Number of mascaras = n (M) = 5

Total number of items in the bag = N = 21

Consider that the probability of an event occurring is P. Then the probability of the given event not taking place is known as the complement of that event.

Complement of the given event is, 1 – P.

Compute the probability of selecting a lipstick as follows:

P(L)=\frac{n(L)}{N}\\\\=\frac{6}{21}\\\\=\frac{2}{7}

Compute the  probability of not selecting a lipstick as follows:

P(L^{c})=1-P(L)

          =1-\frac{2}{7}\\\\=\frac{7-2}{7}\\\\=\frac{5}{7}

Convert this probability into percentage as follows:

\frac{5}{7}\times 100 = 71.4286\approx 71\%

Thus, the probability that she will not pull lipstick is 71%.

8 0
3 years ago
Solve for x I need help please
olchik [2.2K]
Check the picture below.

bear in mind that, a perpendicular line stemming from the right-angle like so, creates three similar triangles, a large one, containing the other two smaller ones, a medium and a small.

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4 years ago
What is the difference between DEPENDENT and INDEPENDENT probability?
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Answer:

Dependent events influence the probability of other events – or their probability of occurring is affected by other events. Independent events do not affect one another and do not increase or decrease the probability of another event happening.

Step-by-step explanation:

see above

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Answer: 1 13/30

Step-by-step explanation: Turn into a mixed number

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The quality control manager at a factory records the number of equipment breakdown each day . Let the random variable Y represen
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Answer:

On average, the number of breakdowns per day varies from the mean by about 0.28.

Step-by-step explanation:

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