Answer:
Since a triangle has 180 interior degrees, and 81+57=138, and 180-138=42, you need to find _*2+18=42. (Hint, you can subtract the 18 from the 42, and find _*2=24).
Step-by-step explanation:
The equation that relates x and y :
y = kx , where k is the proportionality constant.
For given question,
y varies directly as x
Also, y= 12.4 when x= 4
So, for x = 1 the value y is,
y = 12.4/4
y = 3.1
As y is directly proportional to x, the equation that relates x and y is,
y = kx
where k is the proportionality constant.
We know that when two values or quantities are directly proportional to each other then one value decreases at the same rate that the other increases.
Therefore, the equation that relates x and y :
y = kx , where k is the proportionality constant
Learn more about the directly proportional here:
brainly.com/question/2548537
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Answer:
3
Step-by-step explanation:
No solution
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The lines are parallel
eg
y = 2x + 3; y = 2x + 5
Infinite solutions
============
When one equation reduces to the second one.
2y = 10x + 6
y = 5x + 3 When you divide the first one by 2, you get the second one.
(6 - 4i)²
use square of difference;
6² - 2 × 6 × 4i + (4i)²
use multiplication distributive property;
36 - 2 × 6 × 4i + 4²i²
36 - 2 × 6 × 4i + 16i²
36 - 2 × 6 × 4i + 16 × -1
36 - 48i + 16 × -1
36 - 48i - 16
(36 - 16) - 48i
20 - 48i
hope that helps, God bless!
