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3 years ago

True or false need help asap 67% 33% 32% which one is true

Mathematics

2 answers:

Ulleksa [173]3 years ago

6 0

Answer:

You need to attach something to this?

Step-by-step explanation:

I could help you but theres nothing here to see?

NikAS [45]3 years ago

3 0

I don’t seeeeee a picture I only seeeeee percents

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How much of earth's surface is cover by land? write your answer in scientific notation

sp2606 [1]

(5.1x10^8) - (3.61x10^8)

(5.1-3.61) x 10^8

1.49 x 10^8 = Final answer

7 0

3 years ago

The Blair family was one of the first to come to the original 13 colonies (now part of the USA). They had 4 children. Assuming t

Mumz [18]

Answer:

31.25% probability that the Blair family had at least 3 girls

Step-by-step explanation:

For each children, there are only two possible outcomes. Either it was a girl, or it was not. The probability of a child being a girl is independent of any other children. 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.

They had 4 children.

This means that $n = 4$

The probability of a child being a girl is 0.5

This means that $p = 0.5$

Probability of at least 3 children:

$P(X \geq 3) = P(X = 3) + P(X = 4)$

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

$P(X = 3) = C_{4,3}.(0.5)^{3}.(0.5)^{1} = 0.25$

$P(X = 4) = C_{4,4}.(0.5)^{4}.(0.5)^{0} = 0.0625$

$P(X \geq 3) = P(X = 3) + P(X = 4) = 0.25 + 0.0625 = 0.3125$

31.25% probability that the Blair family had at least 3 girls

3 0

3 years ago

Determine whether the given length can be side lengths of a right triangle. 12m, 60m, 61m

Ne4ueva [31]

Answer:

Step-by-step explanation:

Using the converse of Pythagoras' identity.

If the longest side squared is equal to the sum of the squares of the other 2 sides then the triangle is right.

The longest side = 61, thus

61² = 3721

12² + 60² = 144 + 3600 = 3744 ≠ 3721

Thus these sides do not form a right triangle.

3 0

3 years ago

What is the answer to -4(5x6)

Softa [21]

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3 years ago

Find the distance between point a and point b

gulaghasi [49]

Answer:

5 units

Since they both have the same y value, just subtract the a value's x from the b's x value

3 0

3 years ago