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horsena [70]
3 years ago
8

A ray cannot be perpendicular to a line. true or false? no guesses please

Mathematics
2 answers:
galina1969 [7]3 years ago
8 0

Answer:

TRUE

Step-by-step explanation:

PtichkaEL [24]3 years ago
3 0
That is false a ray can be perpendicular to a line :)
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If the spinner is spun once, then P (landing on test postponed) is...
Scrat [10]

Answer:A

Step-by-step explanation:

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2 years ago
We want to determine if the probability that a student enrolled in an accelerated math pathway is independent of whether the stu
Molodets [167]

Answer:

The correct option is (c).

Step-by-step explanation:

The complete question is:

The data for the student enrollment at a college in Southern California is:

                    Traditional          Accelerated            Total

                  Math-pathway     Math-pathway

Female              1244                       116                   1360

Male                  1054                       54                    1108

Total                  2298                     170                  2468

We want to determine if the probability that a student enrolled in an accelerated math pathway is independent of whether the student is female. Which of the following pairs of probabilities is not a useful comparison?

a. 1360/2468 and 116/170

b. 170/2468 and 116/1360

c. 1360/2468 and 170/2468

Solution:

If two events <em>A</em> and <em>B</em> are independent then:

P(A|B)=P(A)\\\\\&\\\\P(B|A)=P(B)

In this case we need to determine whether a student enrolled in an accelerated math pathway is independent of the student being a female.

Consider the following probabilities:

P (F|A) = \farc{116}{170}\\\\P(A|F)=\frac{116}{1360}\\\\P(A)=\frac{170}{2468}\\\\P(F)=\frac{1360}{2468}

If the two events are independent then:

P (F|A) = P(F)

&

P (A|F) = P (A)

But what would not be a valid comparison is:

P (A) = P(F)

Thus, the correct option is (c).

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3 years ago
A number of eggs ,e, divide by 12
Arada [10]
1÷[email protected]
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3 years ago
Does anyone know how to change their username for Brainly????? If so HELP!!!!!!!!!! Will give 20 points to anyone I really don't
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8 0
2 years ago
Read 2 more answers
Three rays have a common vertex on a line. Write and solve equations to find the measures of m and n
lukranit [14]

Answer:

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n = 28º

m = 180 - (62 + n + 27)

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m = 180 - 117

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5 0
3 years ago
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