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3 years ago

A pair of dice is rolled 20 times. what is the probability that a sum of 5 is rolled at least r times

1 answer:

8 0

The probability of the sum of 5 is 5/20 or 1/4.
Solution:
Formula: P(A) = No. of favorable outcomes / Total no. of possible outcomes
P(A) = 5/20
P(A) = 1/4

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-2/3- (-3/4) Simplify if needed Brainliest Also, 5/6+5/12

bazaltina [42]

Answer:

$-\frac{2}{3} - (-\frac{3}{4}) = \frac{1}{12}$

$\frac{5}{6} + \frac{5}{12} = \frac{5}{3}$

Step-by-step explanation:

Given

$-\frac{2}{3} - (-\frac{3}{4})$

Required

Solve:

$-\frac{2}{3} - (-\frac{3}{4})$

Open bracket

$-\frac{2}{3} - (-\frac{3}{4}) = -\frac{2}{3} +\frac{3}{4}$

Take LCM

$-\frac{2}{3} - (-\frac{3}{4}) = \frac{-8+9}{12}$

$-\frac{2}{3} - (-\frac{3}{4}) = \frac{1}{12}$

$\frac{5}{6} + \frac{5}{12}$

Take LCM

$\frac{5}{6} + \frac{5}{12} = \frac{10+5}{12}$

$\frac{5}{6} + \frac{5}{12} = \frac{15}{12}$

Divide by 3/3

$\frac{5}{6} + \frac{5}{12} = \frac{5}{3}$

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3 years ago

Which of the following substances has molecules that are spread the furthest apart?

sasho [114]

Answer:

gas it's gas

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2 years ago

Please help me give brainliest

Cloud [144]

Answer:

d and b

Step-by-step explanation:

the minimums and maximums of each make the most sense so it'd be d for the first and b for the second

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2 years ago

5. Determine the length of side y to the nearest hundredth.

KonstantinChe [14]

Answer:

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Step-by-step explanation:

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2 years ago

Starts at 12 and ends at 6

Oksanka [162]

Answer:

126

Step-by-step explanation:

i don't know if it's correct or not

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2 years ago

Read 2 more answers