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Stella [2.4K]
3 years ago
7

The value of the function f(x) = 3x squared minus 2x for x =4

Mathematics
1 answer:
goldenfox [79]3 years ago
7 0

Answer:

Answer is 40.

Step-by-step explanation:

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Mnenie [13.5K]

Answer:

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Step-by-step explanation:

5 0
3 years ago
In a recent survey, 60% of the community favored building a health center in their neighborhood. If 14 citizens are chosen, find
andreev551 [17]

Answer:

Probability that exactly 5 of them favor the building of the health center is 0.0408.

Step-by-step explanation:

We are given that in a recent survey, 60% of the community favored building a health center in their neighborhood.

Also, 14 citizens are chosen.

The above situation can be represented through Binomial distribution;

P(X=r) = \binom{n}{r}p^{r} (1-p)^{n-r} ; x = 0,1,2,3,.....

where, n = number of trials (samples) taken = 14 citizens

         r = number of success = exactly 5

        p = probability of success which in our question is % of the community

              favored building a health center in their neighborhood, i.e; 60%

<em>LET X = Number of citizens who favored building of the health center.</em>

So, it means X ~ Binom(n=14, p=0.60)

Now, Probability that exactly 5 of them favor the building of the health center is given by = P(X = 5)

        P(X = 5) = \binom{14}{5} \times 0.60^{5} \times (1-0.60)^{14-5}

                      = 2002 \times 0.60^{5} \times 0.40^{9}

                      = 0.0408

Therefore, Probability that exactly 5 of them favor the building of the health center is 0.0408.

4 0
3 years ago
PLEASEEE!!! HELP ME!! ​
sdas [7]

Answer:

A). 23

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
The expression cos(A-B) - cos(A+B) is equal to
olchik [2.2K]
Cos (A-B) - cos (A+B) 
= (cosAcosB +sinAsinB) - (cosAcosB - sinAsinB)
=2sinAsinB

Ans: 4
6 0
3 years ago
Read 2 more answers
Find the perimeter of a rectangle with a length of 12 feet and a width of 6 feet.
jeka57 [31]
Perimeter= 2 ( length + width)
2×(12+6)
2×18
=36
3 0
3 years ago
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