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2 years ago

PLEASE HELP

Mathematics

1 answer:

Lena [83]2 years ago

3 0

Answer:

11.4 cm

Step-by-step explanation:

Using pythagoras theorem,

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Does this graph represent a function? Why or why not?

aksik [14]

Answer:

Step-by-step explanation:

It is a function because it passes the vertical line test... (There is no vertical line you can draw that will go through 2 or more than 2 points.)

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3 years ago

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Two professors at a nearby university want to co-author a new textbook in either economics or statistics. They feel that if they

WARRIOR [948]

Answer:

0.3 or 30%

Step-by-step explanation:

The professors will only seek a smaller publisher if they cannot place the statistics book with a major publisher. If the probability of getting a major publisher is 40% and the probability of getting a smaller publisher is 50%, then the probability that the statistics book would wind up being placed with a smaller publisher is given by:

$P=(1-P(major))*P(minor)\\P=(1-0.4)*0.5\\P=0.3$

The probability is 0.3 or 30%.

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3 years ago

Guysss my little sis has been using my brainly account just to let yall know :)

STatiana [176]

Answer:

oof why tho :)

Step-by-step explanation:

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3 years ago

The sum of the three interior angles of a triangle is 180 degrees.

Sladkaya [172]

It can be b), c) and d).

b) because it says the sum of three angles — this one’s the most obvious, as we can look at x, y and z as three different angles that sum up to 180.

c) works because 3a is, in essence, a + a + a, which we can look at as the sum of 3 angles that adds up to 180.

d) because we already have 2 angles, and “a” is just an unknown angle. It all sums up to 180.

a) and e) dont work because they involve multiplying (x*y*z and x*x*x) and the problem says we need to look for the sum of angles, not the product. :)

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3 years ago

(a) Suppose one house from the city will be selected at random. Use the histogram to estimate the probability that the selected

Lera25 [3.4K]

Answer:

a. 0.71

b. 0.9863

Step-by-step explanation:

a. The mean of the distribution is given as $403,000 and the standard deviation is $278,000.

-To estimate the probability that a randomly selected house has a value less than $500,000:

$P(X$

Thus, the probability that a randomly selected house has a value less than $500,000 is 0.71

b. -since 40 is larger than or equal to 30, we assume normal distribution.

-The probability can therefore be calculated as:

$P(\bar X)=P(z$

Hence, the probability that the mean value of the 40 houses is less than $500,000 is 0.9863

3 0

3 years ago