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Dmitriy789 [7]
3 years ago
7

Use addition to solve the linear system of equations. y=-3x+1 y+2x-4

Mathematics
1 answer:
Anastasy [175]3 years ago
4 0
The solution is (1, -2)
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Time = Distance/Speed

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From Alexa's eyesight to the top of the tree has an angle of 56.789 degrees and its distance of 23.45 feet. Match the following
Marat540 [252]

Answer:

Distance between Alexa and tree = 12.844 ft

Height of tree = 19.620 + height of eyesight from ground

Perimeter of triangle formed = 55.914 ft

Step-by-step explanation:

From the given data, the attached image is drawn ( refer attachment)

Assume

Height of eye line as h_{A}, height of tree as  h_{T}, distance of tree from Alexa as X and vertical distance between eye line and top of tree is y.

To find: distance of tree from Alexa

consider triangle ATE. Here

X = 23.45 * cos (56.789^{o}) = 12.844 ft

y = 23.45 * sin (56.789^{o}) = 19.620 ft

Hence distance of tree from Alexa = 12.844 ft

Height of tree  h_{T} = y + h_{A}

                               = 19.620 + h_{A}

Perimeter of triangle = X + Y + 23.45 ft

                                     = 12.844 ft +19.620 ft + 23.45 ft

                                     = 55.914 ft

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3 years ago
Simplify the expression (2 + 6i)(4 - 2i)
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Your answer would turn out to be

D. 20+21i

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Collin is making a bulletin board and note center. He is using square cork tiles and square dry-erase tiles. One of every 3 squa
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Well 12 divided by 3 is 4 so there will be 4 cork squares.
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