Answer:
you owe her 4.28
Step-by-step explanation:
30.00-25.75= 4.28
The ' c ' in 'gcf' and in 'lcm' stands for 'common'. 'Common' means 'same for all of them'. There's nothing common until you have at least two things. There's no such thing as the gcf or the lcm of only one number.
Davids walked 2 miles per hour (his velocity was 2mph)
Answer:
Simplifying
x2 + bx + 9 = 0
Reorder the terms:
9 + bx + x2 = 0
Solving
9 + bx + x2 = 0
Solving for variable 'b'.
Move all terms containing b to the left, all other terms to the right.
Add '-9' to each side of the equation.
9 + bx + -9 + x2 = 0 + -9
Reorder the terms:
9 + -9 + bx + x2 = 0 + -9
Combine like terms: 9 + -9 = 0
0 + bx + x2 = 0 + -9
bx + x2 = 0 + -9
Combine like terms: 0 + -9 = -9
bx + x2 = -9
Add '-1x2' to each side of the equation.
bx + x2 + -1x2 = -9 + -1x2
Combine like terms: x2 + -1x2 = 0
bx + 0 = -9 + -1x2
bx = -9 + -1x2
Divide each side by 'x'.
b = -9x-1 + -1x
Simplifying
b = -9x-1 + -1x
Step-by-step explanation:
Answer:
y = 3x
Step-by-step explanation:
1) Identify the slope of the given equation. We can see that the y is isolated in the equation 
, so it is in slope-intercept form, or 
format. When an equation is in slope-intercept form, the 
, or the coefficient of the x-term, represents the slope, thus 
is the slope of the given equation. Lines that are perpendicular to each other have slopes that are opposite reciprocals, so the slope of the new line would be 3.
2) Now, use the point-slope formula 
to write the equation of the new line. Substitute values for , 
, and 
in the formula.
Since represents the slope, substitute 3 for it. Since and represent the x and y values of a point the line intersects, substitute the x and y values of (3,9) for those places in the formula as well. Then, with the resulting equation, isolate y to find an answer in slope-intercept form:
