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melamori03 [73]
2 years ago
15

If the odds against​ Deborah's winning first prize in a chess tournament are 1 to 7, what is the probability of the event that s

he will win first​ prize?
Mathematics
1 answer:
mart [117]2 years ago
5 0

Answer:

7/8

Step-by-step explanation:

Odds against are the ratio between losses and wins.

odds against = L / W

Probability of winning is the ratio between wins and all games.

probability = W / games

probability = W / (W + L)

The odds against are 1 to 7.

1/7 = L / W

W = 7 L

The probability is therefore:

P = (7 L) / (7 L + L)

P = 7/8

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Brian flips a fair coin 3 times. What is the probability of getting exactly 2 tails?
sammy [17]

Answer:

3/8

Step-by-step explanation:

The possible outcomes

TTT TTH THT THH  HHH HHT HTH HTT  = 8 outcomes

There are TTH THT HTT  3 with exactly two tails

P ( exactly 2 tails) = 3/8

7 0
3 years ago
Read 2 more answers
Can someone help me answer this question asap
dsp73
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3 years ago
SOLVE THESE 3 QUESTIONS WILL GIVE BRAINLIEST ASAP!
Fofino [41]

Answer:

A: Neither is a better deal, they cost the same person cubic foot

------

B: The large truck's volume is 2.3 times greater than the small truck's

C: At least: three vans, or two small trucks, or one large truck

Step-by-step explanation:

V=Lhw R=$/ft³

Vv=10.5(6)(6)

Vv=378 ft³

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7 0
3 years ago
light travels at 3x10 to the power of 8 meters per second. there are 8.64x10 to the power of 4 seconds in 24 hours. how many met
Vaselesa [24]
Distance = velocity * time

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6 0
3 years ago
Write the equation of a circle with a center at (-1,2) and a radius of 7
Sever21 [200]

Answer:

(x+1)^2+(y-2)^2=49

Step-by-step explanation:

The standard form for the equation of a circle is (x-h)^2+(y-k)^2=r^2 where  r  is the radius, and the center is (h, k).

(h, k) = (-1, 2),  r = 7

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5 0
3 years ago
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