A bag of marbles contains 2 gold marbles, 10 silver marbles, and 30 black marbles. You decide to play the following game: Random
2 answers:
Answer:
-71 cents
Step-by-step explanation:
The total number of balls is 2 + 10 + 30 = 42 balls
The probability of getting gold marble
The probability of getting silver marble
The probability of getting black marble
With the price for each case, we can calculate the expected value of the game by multiplying the price money by the probability and sum them up
dollar
or -71 cents.
So expect to lose 71 cents everytime you play this game
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9514 1404 393
Answer:
- ∠QSR = 78°
- ∠SQR = 51°
Step-by-step explanation:
The measure of an inscribed angle (QTR) is half the measure of the arc it intercepts. The measure of an arc is the same as the measure of the central angle it intercepts. So, we have ...
∠QSR = 2×∠QTR
∠QSR = 2×39°
∠QSR = 78°
__
Sides SQ and SR are radii of circle S, so are the same length. That means triangle QRS is an isosceles triangle and the base angles SQR and SRQ are congruent. The sum of angles in a triangle is 180°, so we have ...
∠QSR + 2(∠SQR) = 180°
78° + 2(∠SQR) = 180° . . . . fill in the value we know
2(∠SQR) = 102° . . . . . . . . . subtract 78°
∠SQR = 51° . . . . . . . . . . . . .divide by 2
Answer:
(3x + 4)(2x - 5)
<em> = (3x + 4)(2x - 5)</em>
Hope this helped! Have a great day!
