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3 years ago

Suppose m:angle a =77 degrees what is the measure of a complement of a complement of angle a

1 answer:

6 0

Two Angles are Complementary when they add up to 90 degrees (a Right Angle). They don't have to be next to each other, just so long as the total is 90 degrees.

So measure of angle complentaary to angle a is

X = 90 – 77

X = 13 degrees

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Cindy earned $618.00 on her last paycheck. Two-thirds of what she earned was commission, How much did Cindy earn in commission o

Arisa [49]

Cindy earned $412.00 in commission on the paycheck.
Explanation:
Divide 618 by 3 to split the money into thirds.
618/3 = 206
1 third of 618 = 206
Since her commission was two thirds of 618, multiply 206 by 2.
206 x 2 = 412
Your answer is $412

7 0

3 years ago

What is the perimeter of 5,7 and 10,12

ANEK [815]

24 and 42, I got this by multiplying 5 and 2 then doing the same thing to 7 and adding the sums. I used this method to find the perimeter of 10 and 12 as well.

4 0

3 years ago

a student either knows the answer or guesses. Let 3434 be the probability that he knows the answer and 1414 be the probability t

Arlecino [84]

Answer: $\dfrac{12}{13}$

Step-by-step explanation:

Let A = he known the answer then A' = he guess the answer.

B = he answered it correctly

As per given , we have

$P(A)=\dfrac{3}{4}\ \ ,\ \ P(A')=\dfrac{1}{4}$

$P(B|A)=1$

$P(B|A')=\dfrac{1}{4}$

By Bayes theorem , we have

$P(A|B)=\dfrac{P(B|A)P(A)}{P(B|A)P(A)+P(B|A')P(A')}\\\\ P(A|B)=\dfrac{1\times\dfrac{3}{4}}{1\times\dfrac{3}{4}+\dfrac{1}{4}\times\dfrac{1}{4}}\\\\= \dfrac{12}{13}$

The probability that the student knows the answer given that he answered it correctly is $\dfrac{12}{13}$ .

6 0

3 years ago

Find the length of arc XPY. Leave your answer in terms of pi.

PIT_PIT [208]

Answer:

2π m.

Step-by-step explanation:

Arc XY is 1/4 of the circumference of the circle

= 1/4 * 2π * r

= 1/2 π * 4

= 2π m.

8 0

2 years ago

Which of the following behaviors would best describe someone who is listening and paying attention? a) Leaning toward the speake

nataly862011 [7]

Answer:

Step-by-step explanation:

If you ask questions while their speaking it shows that you are paying attention to them. Avoiding eye contact could mean your thinking about something else or you aren't interested. Interrupting them is just being disrespectful. Leaning towards them doesn't really do anything other than you moving.

7 0

3 years ago