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Xelga [282]
2 years ago
8

Y = 2x + 5 x + y = 8 Where do the lines intersect?

Mathematics
1 answer:
lapo4ka [179]2 years ago
7 0

Answer:

They intersect at (1,7) :)

Step-by-step explanation:

The website is called desmos, it's a graphing calculator if you need it for future problems :)

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What is (3-4i)^2? In complex numbers?
ANTONII [103]
(3-4i)^2=9-24i-16=-7-24i
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3 years ago
Please help! This is for Algebra 1
kow [346]
The first answer
-40y3/x5
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3 years ago
Solve the following quadratic equation for all values of x in simplest form.<br> 20+ 2x= 28
n200080 [17]

Answer:

x = 4

Step-by-step explanation:

<em>To solve, we need to isolate </em><em>x</em><em>.</em>

<em>Start by moving the </em><em>20</em><em> to the other side by subtracting it from both sides.</em>

2x = 8

<em>Since </em><em>x</em><em> is being multiplied by </em><em>2</em><em>, we need to </em><u><em>divide</em></u><em> both sides by </em><em>2</em><em> to move it to the other side.</em>

x = 4

6 0
2 years ago
An art studio purchased a triangular plot of land in a town and constructed a new building whose base is in the shape of a right
Vinvika [58]

Answer:

The sides are 30 ft, 40 ft and 50 ft.

Step-by-step explanation:

The length of the triangle are as follows x - 4 , x + 6 and 2x - 18 . The hypotenuse should be 2x - 18 . The hypotenuse is the longest side of a right angle triangle.

Using Pythagoras theorem the length of the sides can be found.

a² + b² = c²

(x - 4)² + (x + 6)² = (2x - 18)²

(x - 4)(x - 4) + (x + 6)(x + 6) = (2x - 18)(2x - 18)

x²- 4x - 4x + 16 + x² + 6x + 6x + 36 = 4x² - 36x - 36x + 324

2x² - 8x + 12x + 16 + 36 = 4x² - 72x +  324

2x² + 4x + 52 = 4x² - 72x +  324

2x² - 4x² + 4x + 72x + 52 - 324 = 0

-2x² + 76x - 272 = 0

2x² - 76x + 272 = 0

divide through by 2

x² - 38x + 136 = 0

find the number you can multiply to give you 136 and add to give you - 38. The number are - 34 and - 4.

x² - 4x - 34x + 136 = 0

x(x - 4) - 34(x - 4) = 0

(x - 4)(x - 34 ) = 0

x = 4 or 34

we can only use 34 since using 4 will result to negative number.

x - 4  = 34 - 4 = 30 ft

x + 6 = 34 + 6 = 40 ft

2x - 18 = 68 - 18 = 50 ft

6 0
2 years ago
Which THREE reflective symmetries apply to this square so that it carries onto itself?
valina [46]

Answer:

We need an image of the square.

Step-by-step explanation:

5 0
3 years ago
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