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3 years ago

Find the measure of angle A. Round your answer to the nearest whole number

Mathematics

1 answer:

ArbitrLikvidat [17]3 years ago

5 0

Answer:

∠ A ≈ 53°

Step-by-step explanation:

Using the tangent ratio in the right triangle

tan A = $\frac{opposite}{adjacent}$ = $\frac{BC}{AC}$ = $\frac{12}{9}$ , then

∠ A = $tan^{-1}$ ( $\frac{12}{9}$ ) ≈ 53° ( to the nearest whole number )

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Jenn has 13 fewer marbles then Marty.she has 20 marbles.which equation can be solved to find how many marbles Marty has?

faust18 [17]

If jenn has 13 fewer marbles than marty and we know she has 20 marbles, you would add 13 to 20 (33) to find how many marbles marty has. the equation would be 13+20=33 (or any variable depending on the context of the question.)

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4 years ago

The sum of three consecutive integers is 189 . What are the integers?

velikii [3]

Answer:

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3 years ago

A single card is drawn from a standard 52-card deck. Let D be the event that the card drawn is a black card, and let F be the

Svetllana [295]

Answer:

$\dfrac{25}{26}$

Step-by-step explanation:

Let

D be the event that the card drawn is a black card
F be the event that the card drawn is a 10 card
F' be the event that the card drawn is not a 10 card

The probability

$Pr(D\cup F')=Pr(D)+Pr(F')-Pr(D\cap F')\\$

Note that

$Pr(D)=\dfrac{26}{52}=\dfrac{1}{2}\\ \\Pr(F)=\dfrac{4}{52}=\dfrac{1}{13}\\ \\Pr(F')=1-\dfrac{1}{13}=\dfrac{12}{13}\\ \\Pr(D\cap F')=\dfrac{24}{52}=\dfrac{6}{13}$

So,

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3 years ago

In each turn of a game you toss two coins. if 2 heads come up, you win 2 points and if 1 head comes up you win 1 point. if no he

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The expected value of the number of points for each turn is 0.25

<h3>What is expected value?</h3>

Expected value describes the long term average level of a random variable based on its probabilty distribution.

Now, Probability that 2 heads come up is

P(2 is H) = 1/4

Probability that 1 heads come up is

P(1 is H) = 2/4

⇒P(1 is H) = 1/2

Probability that no head will come up

P(no H's) = 1/4

Hence, the expected value for winning of 2points, 1point and lose of3 points is given as-

Expected value = 2 * P(2 is H) + 1 * P(1 is H) - 3 * P(no H's)

⇒Expected value = 2 * 1/4 + 1 * 1/2 - 3 * 1/4

= 0.5 + 0.5 - 0.75

⇒Expected value = 0.25

More about Expected value :

brainly.com/question/22715250

#SPJ1

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1 year ago

Select the four choices below that are equal to 2 × 3 × 4.

horrorfan [7]

Answer:

Step-by-step explanation:

2*3*4=6*4=24

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3 years ago

Find the measure of angle A. Round your answer to the nearest whole number​

Find the measure of angle A. Round your answer to the nearest whole number