We can get the tax pay by multiplying the total cost times the tax rate, and take into account that 7.375% = 7375/100000 that huge denominator comes from adding 100 more zeroes as the decimal places in the tax amount has, so we do have:
(7.375%)(625)
= (<span>7375/100000)(625)
= 46.09
therefore, the 7.375% out of $625 is $46.09</span>
Answer:
--9x^3+12x^2-x-2
Step-by-step explanation:
(2-3x)(3x^2-2x-1)
6x^2-4x-2-9x^3+6x^2+3x
-9x^3+6x^2+6x^2+3x-4x-2
-9x^3+12x^2-x-2
2 * (2a + b) + 8 = 4a + 2b + 8
------------------------------------------
A. =
B. =
C. ≠ 4* (a + b + 2) = 4a + 4b + 8
D. =
You only have two observations to work the equation for the velocity.
You only can assume a linear relation.
Part a.
Calling x the independent variable (time in hours) and y the dependent variable (velocity in km/h) =>
x (time in hours) y (velocity in km/h)
1 5
2 3
Now you use the linear relation:
slope: (3 - 5) km/h/ (2 - 1)h = - 2 km/1h^2 = - 2 km/h ^2
Equation:
y - 3 = slope * (x - 2)
=> y - 3 = - 2 ( x - 2)
=> y - 3 = - 2x + 4
=> y = 3 - 2x + 4
=> y = - 2x + 7
that is the slope-intercept form.
the standard form is y + 2x - 7 = 0
part B.
to draw the graph you can make a table with the points for the first four hours:
x (time in hours) y (velocity in km/h)
-2x + 7
1 -2(1) + 7 = 5
2 -2(2) + 7 = 3
3 -2(3) + 7 = 1
4 -2(4) + 7 = - 1
The graph, of course, is a straight line, because we started from that assumption.
