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3 years ago

What is 140 squared pleas help me i am dumb

Mathematics

1 answer:

Fed [463]3 years ago

7 0

Answer:

19600

Step-by-step explanation:

140 squared = 140 x 140 = 19600

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Find the value of x. Then find the missing angle measures of the polygon.

Naily [24]

The sum of the angles equals 540

There are 3 angles that measure (x - 30) and 2 angles that measure (x)

3(x - 30) + 2(x) = 540

3x - 90 + 2x = 540

5x - 90 = 540

5x = 630

x = 126

x - 30 = 126 - 30 = 96

Answer: x = 126, x-30 = 96

8 0

3 years ago

Write $3.9 out of $60 as percentage

Norma-Jean [14]

Answer:

Step-by-step explanation:

$\frac{3.9}{60}*100=\frac{13}{2}$

= 6.5%

4 0

2 years ago

An angle measures 40° less than the measure of its supplementary angle. What is the measure of each angle?

Vilka [71]

Step-by-step explanation:

(180-x)-40=X

140 -x=X

140= 2x

x=140/2

x=70

the answer is 70 degree

4 0

1 year ago

Anyone knows the answer

jarptica [38.1K]

It's C)

the graph is decrasing, so the variable rate is negative (-2/3)

the rest was quite easy, you just take a look at where the graph cuts the y-axis and determine the rest from the rate of going up or down (increase/decrease)

4 0

3 years ago

Read 2 more answers

Answer the following questions and round your answers to 2 decimal places. 84% of all Americans live in cities with population g

nignag [31]

Answer:

15.23% probability that exactly 42 of them live in cities with population greater than 50,000 people.

Step-by-step explanation:

For each American, there are only two possible outcomes. Either they live in cities with population greater than 50,000 people. Or they do not. The probability of a person living in a city with population greater than 50,000 people is independent of any other person. 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.

84% of all Americans live in cities with population greater than 50,000 people.

This means that $p = 0.84$

If 50 Americans are selected at random, Find the probability that Exactly 42 of them live in cities with population greater than 50,000 people.

This is P(X = 42) when n = 50. So

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

$P(X = 42) = C_{50,42}.(0.84)^{42}.(0.16)^{8} = 0.1523$

15.23% probability that exactly 42 of them live in cities with population greater than 50,000 people.

4 0

2 years ago