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2 years ago

Hey everybody just checking in if you say hi I’ll give BRAINLIEST!

Mathematics

2 answers:

Brums [2.3K]2 years ago

4 0

Hai UwU,

Hope you have a wonderful day! XD

nordsb [41]2 years ago

3 0

Hi... how are you ?

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what is the sum of the measures of the angles of a convex quadrilateral? will this property hold if the quadrilateral is not con

bonufazy [111]

Answer:

The sum of the measures of the angles of a convex quadrilateral is 360° as a convex quadrilateral is made of two triangles. Yes, this property also holds true for a quadrilateral which is not convex. This is because any quadrilateral can be divided into two triangles.

3 0

2 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

Mr North spent $144,00 to build a fence around the perimeter of bis vegetable garden.He paid $6.oo per yard for fencing a, Draw

DedPeter [7]

The perimeter of his fence is 2400 the steps i took to find this was i divided 14400 by 6 an i got 2400. I can only think of one possible reason I hope the helps, Sorry

3 0

3 years ago

If F(x) = 9x, which of the following is the inverse of F(x)?

Masja [62]

The inverse of this function is f^-1(x)=x/9

8 0

2 years ago

What's 2/3 divided by 5

gtnhenbr [62]

Answer:2/15

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers