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Brilliant_brown [7]
3 years ago
8

Two math questions

Mathematics
1 answer:
Ivenika [448]3 years ago
5 0
1. Substitute y in the first equation into the second one.
x+4=-2x-2

Add 2x to both sides
3x+4=-2

Subtract 4 from both sides
3x=-6

Divide both sides by 3
x=-2

Plug in the x value
y=-2+4
y=2

Final answer: (-2,2)

2. There are 0 solutions because the lines are parallel and will never cross each other
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What is the sum of 6dm, 40mm, 2m and 10cm in meters?
sveticcg [70]

Answer:

<h2><u><em>2.74 m</em></u></h2>

Step-by-step explanation:

<u><em>convert to meters</em></u>

6 dm = 0.6 m

40 mm = 0.04 m

2 m = 2 m

10 cm = 0.1 m

sum

0.6 + 0.04 + 2 + 0.1 =

2.74 m

7 0
2 years ago
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Semmy [17]

Answer:

y = -x + 4

Step-by-step explanation:

(x₁,y₁)= (5, - 1)    & (x₂,y₂)= (2 , 2)

Slope = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}

         \frac{2-[-1]}{2-5}\\\\=\frac{2+1}{-3}\\\\=\frac{3}{-3}\\\\= -1

m = -1

Equation of the line y - y₁ = m(x - x₁)

y  - [-1] = (-1)*(x - 5)

y + 1 = -x + 5      {-1 is distributed}

y = -x + 5 - 1

y = -x + 4

8 0
3 years ago
PLEASE HELP I DONT UNDERSTAND
Stella [2.4K]

Answer:

B.

-4, 1, 5, 8

Step-by-step explanation:

Your domain is your set of x values.

Your points are as follows:

(-4, 8)

(8, 10)

(5, 4)

(1, 6)

(5, -9)

Your x-values here are -4, 8, 5, 1, and 5. Your domain only consists of unique x-values, so your domain consists of -4, 8, 5, and 1.

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4 years ago
PLEASE HELP! Which of the following is the best definition of a Linear pair of angles?
galina1969 [7]
A pair of angles with a common vertex and sides that are opposite rays
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3 years ago
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Svetlanka [38]

Answer:

20 cups

Step-by-step explanation:

64/16=4

4 x 5 = 20

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