Answer: the answer is 6x³ + 24x² + 18x - 12!
Step-by-step explanation:
Answer:
36 White cars
Step-by-step explanation:
total of 40 white cars and yellow cars" means 40 = W + Y
"9 times as many white cars as yellow cars" means 9Y = W
9W + 9Y = 360 (first equation; multiply (W+Y=40) by 9 to eliminate Y)
W - 9Y = 0 (carefully revise the second equation)
------------------- (Elimination method: add the equations)
10W = 360
W = 36 Ans: 36 White cars
Checking (very important):
40 = W + Y
40 = 36 + Y
4 = Y
is 9(4) = 36
36 = 36
Sub in 3 for all the x: =(3)³ - 19(3) +30
Expand the brackets: =27 - 57 + 30
Solve the equation: =0
Say you've solved it: QED
The solution in slope-intercept form for:
y + 7 = -3(x - 1) is y = -3x - 4
3x + y = -4 is y = -3x - 4
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Solution:</u></h3>
We have been given two equations
y + 7 = -3(x - 1) and 3x + y = -4
we have been asked to simplify these equations in slope intercept form.
The slope intercept form can be written as follows:
y = mx + b
Where, m is the slope of the line and b is the y-intercept.
The y-intercept of this line is the value of y at the point where the line crosses the y axis
Now, let us write the first equation in slope intercept form as follows:
y + 7 = -3(x - 1)
y + 7 = -3x + 3
y = -3x + 3 - 7
y = -3x - 4
The slope intercept form for the first equation is y = -3x - 4
Now, let us write the second equation in slope intercept form.
This can be done as follows:
3x + y = -4
y = -3x - 4
Therefore, the slope intercept form for the second line is y = -3x - 4