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2 years ago

Find x segments of circles

Mathematics

1 answer:

DerKrebs [107]2 years ago

7 0

Answer:

x = -9

x = 2

Step-by-step explanation:

We can say that:

x (x + 7) = 6*3

x² + 7x = 18

x² + 7x - 18 = 0

Now solving by quadratic formula we get;

x = 2, and -9

if we substitute in -9 for x, let's see what happens:

(-9) (-9 + 7) = 6*3

(-9) (-2) = 6*3

18 = 18

therefore x = -9 works! Let's see what happens if we substitute x in for 2;

(2) (2 + 7) = 6*3

(2) (9) = 6*3

18 = 18

Therefore x = 2 works as well!

The final answer would be;

x = -9

x = 2

Hope this helps!

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Answer:

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Answer:

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Given:

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2 years ago

Read 2 more answers

A magician has a collection of 52 cards, with 26 red and 26 black cards. Four of these cards are classified as 'special', and tw

Brums [2.3K]

Answer:

option B (28/52)

Step-by-step explanation:

from probability

P(A∪B)=P(A)+P(B)-P(A∩B)

where

P(A∪B) = probability that event A or B happen

P(A∩B) = probability that event A and B happen simultaneously

P(A) = probability that event A happen

P(B) = probability that event B happen

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P( special or red)= P(special) + P(red) - P( special and red)

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(option B)

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