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Brilliant_brown [7]
2 years ago
8

Two math questions

Mathematics
1 answer:
Ivenika [448]2 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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Find the factors of each expression. x^2+36​
OleMash [197]

Answer:

<h2>x²+36+2(x)(6).. is the correct answer.. </h2>

4 0
2 years ago
How many different triangles can be constructed with three sides, each measuring 5 centimeters?
Akimi4 [234]
The first thing we will do is define an equilateral triangle:
 In geometry, an equilateral triangle is a regular polygon with three equal sides. In traditional Euclidean geometry, equilateral triangles are also equiangular, that is, the three internal angles are also congruent to each other, each angle with a value of 60 °
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5 0
3 years ago
Area of the triangle defined by the coordinates (-3, -4), (-7, 0), and (-3, 4).
qwelly [4]
Here: (Aₓ, Ay) = (-3,-4), (Bₓ, By) = (-7,0), (Cₓ, Cy) = (-3, 4)
Now, Formula of area of triangle is:

area = [Aₓ(By - Cy) + Bₓ(Cy - Ay) + Cₓ(Ay - By)] / 2

Substitute the values in to the expression, 
area = [-3(0-4) - 7(-4-(-4)) - 3(-4-0)] / 2
area = [-3(-4) -7(0) -3(-4)] / 2
area = [12-0+12] / 2
area = 24 / 2
area = 12

Final answer would be 12 units.

Hope this helps!
5 0
3 years ago
Write the equation for:
xenn [34]

Answer:

\frac{1}{2} x +x = 2 (x-4)

Step-by-step explanation:

Suppose number is x

Following equation can be written from question statement

\frac{1}{2} x +x = 2 (x-4)

Simplifying it further

\frac{3}{2} x = 2x-8

\frac{3}{2} x -2x=-8

\frac{3x-4x}{2}= -8

-x= -16\\x=16

7 0
2 years ago
Select the correct answer from each drop-down menu.
blagie [28]

Answer:

divide, 2x+9

Step-by-step explanation:

got it right

6 0
3 years ago
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