Math Question. I need help. Please help me.
2 answers:
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Answer:
Length of AB = 4.4721
Equation of line BC: y = -2x + 6
Step-by-step explanation:
To find the length of the line AB, we just need to find the distance between the points A and B.
We can find distance with the equation:
To find the equation of the line BC, first let's find the slope of the line AB.
This slope is given by:
The line AB is perpendicular to the line BC (because mB = 90°), so the slope of line BC is:
so the line BC is:
To find the value of b, we can use the point B (1,4):
So we have:
A graph shows the solutions to be
(x, y) = (-6, 312) or (6, 312)
To solve algebraically, remove a factor of 2 from the second equation and use that expression to substitute for y in the first equation.
10x^2 -(8x^2 +24) = 48
2x^2 = 72
x = ±√(72/2) = ±6
y = 8*36 +24 = 312
(x, y) = (-6, 312) or (6, 312)
To solve algebraically, remove a factor of 2 from the second equation and use that expression to substitute for y in the first equation.
10x^2 -(8x^2 +24) = 48
2x^2 = 72
x = ±√(72/2) = ±6
y = 8*36 +24 = 312
Answer:
c).
Step-by-step explanation:
It's a right triangle with equal sides (DE == EF).
We know that