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fgiga [73]
3 years ago
13

Olivia Mae 14 3/4 cups of Trail Mix for a trip her sister and brother ate 4/5 of the mix how much do her sister and brother eat

Mathematics
1 answer:
ozzi3 years ago
4 0

Answer:

11 4/5

Step-by-step explanation:

First, I would start off by turning that dreadful mixed number into an improper fraction (it's just easier).

Multiply the whole number by the denominator and then add the numerator.

14 x 4 + 3 = 59   (this becomes your new numerator)

So what is 4/5 of 59/4?

4/5 = .8         so multiply 59/4 by .8 to get 11.8

This would be 11 4/5 as a mixed number and 59/5 as an improper fraction

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yes and yes.

you're told ∠A=∠B. this means angle A and B are equal. so the value you get for cos A will be the same as the value you'll get for cos B

also, the value you get for tan A will be the same as the value you'll get for tan B


if that doesn't make sense you could also draw the triangle and solve for A and B.

you're told it's a right angled triangle meaning one of the angles = 90

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  • A and B could be any value but you're told angle A = angle B

        angle A+ angle B = 90

        you can divide 90 by 2 because A and B are equal. that will give you 45 for A and 45 for B

or

  • angle A+ angle B = 90

        since angle A = angle B,

1. you can substitute angle A with angle B like this

  angle B+ angle B = 90

  2 angle B = 90

  angle B = 90/2

  angle B=45; ∴ angle A is also 45 ( because angle A= angle B)

2. or you could substitute angle B with angle A

   angle A+ angle A = 90

2 angle A = 90

  angle A = 90/2

  angle A =45; ∴ angle B is also 45 ( because angle A= angle B)


Now you know what A and B are,

sin A = sin 45; sin B = sin 45

sin 45 = sin 45

tan A = tan 45; tan B = tan 45

tan 45 = tan 45

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ok no prob ...........lolllllll

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