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3 years ago

Ppllllzzzzz help me plz

Mathematics

1 answer:

Sladkaya [172]3 years ago

7 0

1) a∠12 because this sign means you must be less than 12 years old as a stands for age maybe.
2) it's the 3rd one because always remember that a closed circle is for ≤ or ≥
so now you've to choose between the last two.. always remember if the sign directs right the graph is left and vice versa..Hope this helps:)

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Find the other endpoint of the line segment with the given endpoint and midpoint.

Marat540 [252]

Answer:

(-2,12)

Step-by-step explanation:

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3 years ago

Read 2 more answers

A machine making computer chips isn't working correctly, and 5% of the computer chips it makes are defective. If an inspector ch

Rainbow [258]

Answer:

0.25% probability that they are both defective

Step-by-step explanation:

For each computer chip, there are only two possible outcomes. Either they are defective, or they are not. The probability of a computer chip being defective is independent of other chips. 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.

5% of the computer chips it makes are defective.

This means that $p = 0.05$

If an inspector chooses two computer chips randomly (meaning they are independent from each other), what is the probability that they are both defective?

This is P(X = 2) when n = 2. So

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

$P(X = 2) = C_{2,2}.(0.05)^{2}.(0.95)^{0} = 0.0025$

0.25% probability that they are both defective

4 0

3 years ago

20 POINTS PLZ HELP

ehidna [41]

Answer:

mmm... i think its 6-

Step-by-step explanation:

3 0

3 years ago

Time is now 11:45 AM what is the smaller angle between hour and minute hand on o'clock

Crazy boy [7]

Given that the time now is 11:45 a.m, the smallest and between the hour and minute hand on the o'clock will be given by:
60 min=360 degrees
the time between the min hand and the hour hand is 10 min;
thus the angle will be:
10/60*360
=60 degrees

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4 years ago

Please help!! Sort the fractions from least to greatest: 0.25; 0.10; 0.85; 0.70; 0.45

Svetach [21]

If you have to multiply each decimal by 100 so it’ll make more sense and sort from there :)

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4 years ago