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3 years ago

5

there are 18 bikes in a rack. there are 4 more blue bikes than yellow, and 2 less yellow bikes than green bikes. how many bikes

of each color are in the rack?

1 answer:

Dmitry [639]3 years ago

7 0

6 yellow 2 blue 8 green

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REY [17]

<u>Answer:</u>

The correct answer option is B. 0.21.

<u>Step-by-step explanation:</u>

We are to find the value of $cos \theta$ using the law of cosines.

We know that the formula of the cosine rule is given by:

$c ^ 2 = a ^ 2 + b ^ 2 - 2 a b cos C$

So substituting the given values in the above formula:

$10.9 ^ 2 = 5.8 ^ 2 + 10.5 ^ 2 - 2 (5.8) (10.5) cos C$

$118.81=33.64+110.25-121.8cosC$

$118.81 - (33.64+110.25) = -121.8cosC$

$118.81-143.86=-121.8cosC$

$cosC=\frac{-25.05}{-121.8}$

cos C = 0.21

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3 years ago

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raketka [301]

Answer:

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Step-by-step explanation:

The difference of -3 to -4

-4 + -3 = -1

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3 years ago

9x - 3y = -2<br> -3x + y = -3

morpeh [17]

Multiply 2nd equation by 3 and add to first
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0=-7
false
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