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3 years ago

Please help me with #2.

Mathematics

1 answer:

alekssr [168]3 years ago

7 0

Answer:

Step-by-step explanation:

please give me the brainliest answer if you can bc im trying to lvl up

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Lorenzo Neal is a teacher assistant. He earns $15.50 per hour. He is allowed a flexible hours. Lorenzo was only able to work 32.

AleksandrR [38]

Answer:

15.50 x 32.25=499.875

4 0

3 years ago

Can someone please answer. There is one problem. There's a picture. Thank you!

statuscvo [17]

Tan(-180)=0 the answer is 0.

6 0

3 years ago

Please answer as fast as possible

elena-14-01-66 [18.8K]

Answer:

t=29/15

Step-by-step explanations:

subtract 1 so 29=15t, and 29 divided by 15 is 29/15. In decimal however will give you a never ending number. (hope this answered your question.

8 0

2 years ago

an oil company conducts a geological study that indicates that an exploratory oil well should have a 20% chance of striking oil.

bazaltina [42]

Answer:

4.92% probability that the third strike comes on the seventh well drilled

Step-by-step explanation:

For each drill, there are only two possible outcomes. Either it is a strike, or it is not. Each drill is independent of other drills. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

20% chance of striking oil.

This means that $p = 0.2$

What is that probability that the third strike comes on the seventh well drilled

2 stikers during the first 6 drills(P(X = 2) when n = 6)[/tex]

Strike during the 7th drill, with 0.2 probability. So

$P = 0.2P(X = 2)$

In which

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 2) = C_{6,2}.(0.2)^{2}.(0.8)^{4} = 0.2458$

Then

$P = 0.2P(X = 2) = 0.2*0.2458 = 0.0492$

4.92% probability that the third strike comes on the seventh well drilled

3 0

3 years ago

Simplify (3 + √5 )(2 + √5)<br>need the answer ASAP, WILL GIVE BRAINLIEST

d1i1m1o1n [39]

Answer:

11 + 5√5

Step-by-step explanation:

6 + 3√5 +2√5 + 5

11 + 5√5

root n * root n = n , which is why there is a 5 at the end

6 0

2 years ago

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