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Natalka [10]
2 years ago
12

Whatis the value of the expression 2(x + 4) - (y-8)

Mathematics
1 answer:
valentina_108 [34]2 years ago
8 0

Answer:

16 1/16

Step-by-step explanation:

  • x = ⅛
  • y = 3/16

= 2(x + 4) - (y - 8)

= 2(⅛ + 4) - (3/16 - 8)

= 2(4⅛) - (3/16 - 8/1)

= 2(33/8) - (3/16 - 128/16)

= (2 . 33/8) - (-125/16)

= 33/4 + 125/16

= 132/16 + 125/16

= 257/16

= 16 1/16

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Answer:

  • <u>14.4 mile</u>²

Explanation:

1. By driving 6 miles each, the cars will be 6 miles + 6 miles = 12 miles appart.

2. When one car stops and the other car makes a 90° left-hand turn and drive 8 miles, you can model the situation with a right triangle, where one leg is 12 miles, the other leg is 8 miles, and the hypotenuse is the distance that separates the cars.

Hence, you must use Pythagoras to find that distance.

3. Pythagoras

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  • hypotenuse = (12 mile)² + (8 mile)² = 144 mile² + 64 mile² = 208 mile²

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irina1246 [14]

Answer:

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Step-by-step explanation:

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Let's start with the triangles.

1. To find the area of a triangle, the formula is  \frac{1}{2} b*h. It is given that the base of one triangle is equal to 1.1 in and the height is equal to 3.8 in., so in the equation, it would look like:

\frac{1}{2} * 1.1 * 3.8 = 2.09 in²

2. So now that we know one triangle is equal to 2.09 in², we now know that the other triangle is equal to the same area. To find the total of the two triangles you need to multiply the area by 2:

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Moving on to the rectangle...

1. To find the area of the rectangle we need to use the formula base times height or b x h. It is given that the height is 3.8 in while the length is 4.6 in. So in the equation it would look like:

4.6 * 3.8 = 17.48 in²

Now to find the total area of all shapes combined...

1. To do this, we just need to add up all the areas we found, so...

17.48 + 4.18 = 21.66 in²

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