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3 years ago

What is the value of the expression shown below? 8 + (7 + 1) 2 ÷ 4 ⋅ 2

Mathematics

1 answer:

Leni [432]3 years ago

6 0

The answer is 10

8+(8)2÷4·2
8+16÷4·2 4·2=8 then 16÷8
8+2=10

just use PEMDAS

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Abe, Bob, Carl, Dan and Earl are going to stand in line for a photo. What is the probability that the boys will stand in alphabe

Levart [38]

Answer:

0.0083 = 0.83% probability that the boys will stand in alphabetical order from left to right in the picture

Step-by-step explanation:

Probability:

A probability is given by the number of desired outcomes divided by the number of total outcomes.

Arrangments of x elements:

The total number of arrangments of x elements is given by:

$A_{x} = x!$

Desired outcomes:

Standing in alphabetical order, so only 1 possible outcome, which means that $D = 1$

Total outcomes:

Arrangments of 5 people, so

$T = A_{5} = 5! = 120$

Probability:

$p = \frac{D}{T} = \frac{1}{120} = 0.0083$

0.0083 = 0.83% probability that the boys will stand in alphabetical order from left to right in the picture

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3 years ago

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disa [49]

To find this simply do 5!, or 5×4×3×2×1. That equals 120,

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3 years ago

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tia_tia [17]

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