Answer:
Is it 11.29
Step-by-step explanation:
Add 5+6.50+7.21 then you get 18.71 then subtract that from 30
Answer:
y - 3x = -10
Step-by-step explanation:
Complete question
<em>Choose the equation below that represents the line passing through the point (2, -4) with a slope of 3</em>
The standard equation of a line in point-slope form is y-y0 = m(x-x0)
Given
x0 = 2
y0 = -4
alope m = 3
Substitute
y - (-4) = 3(x - 2)
y + 4 = 3(x - 2)
y + 4 = 3x - 6
y - 3x = -6 - 4
y - 3x = -10
Hence the required equation is y - 3x = -10
Answer:
Value of equation = 26.25
Step-by-step explanation:
Given:
Equation given
-4a² + 3ab - (2a + 3b)
Given value of a = 1/4
Given value of b = -12
Find:
Value of equation
Computation:
-4a² + 3ab - (2a + 3b)
By putting value of a and b
-4(1/4)² + 3(1/4)(-12) - [2(1/4) + 3(-12)]
-4(1/16) - (36/4) - [2/4 - 36]
-4/16 - 36/4 - [-142/4]
- 0.25 - 9 + 142/4
-0.25 - 9 + 35.5
Value of equation = 26.25
ANSWER
The two lines are perpendicular if 
EXPLANATION
Given two lines:
and
We can tell wether these two lines are perpendicular to each other using their slopes.
If the product of their slopes is -1, the then the two line are perpendicular.
For example:
The line
has slope
and the line
has slope
The product of the two slopes is
This implies that:
Therefore the two lines are perpendicular.
