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3 years ago

Solutions to the equation (x - 21)2 = 25?

Mathematics

1 answer:

WITCHER [35]3 years ago

6 0

Answer:

First of all use 2 to multiply the numbers in the bracket which will be 2x-42=25....then collect like terms which will be 2x=25+42 which will be 2x=67 then 67/2=33.5 or 33whole number 1/2.

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Answer:

$- \frac{2}{13}$

Step-by-step explanation:

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4 years ago

Two dice are rolled. What is the probability that the sum of numbers rolled is either 5 or 12?

Maksim231197 [3]

<u>ANSWER: </u>

The probability that sum of numbers rolled is either 5 or 12 is $\frac{5}{36}$

<u>SOLUTION: </u>

Given, Two dice are rolled.

We have to find what is the probability that the sum of numbers rolled is either 5 or 12

We know that, probability of an event = $\frac{\text { favourable outcomes }}{\text { total outcomes }}$

Now, total outcomes for two dices = 6 for 1st dice x 6 for 2nd dice = 6 x 6 = 36.

Now, favourable outcomes = sum is 5 + sum is 12

= 4[(1,4), (2,3), (3, 2), (4, 1)] + 1[(6,6)]

= 5 total favourable outcomes.

Now, probability = 5/36

Hence, the probability that sum is either 5 or 12 is 5/36.

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3 years ago

Solutions to the equation (x - 21)2 = 25?​

Solutions to the equation (x - 21)2 = 25?