<span>Subtract 7 from both sides of the equation. Check: Substitute -4 for x in the original equation. If, after the substitution, the left side equals the right side, your answer is correct. ( -4 ) + 7 = 3 </span>
First, use division to determine the unit rate of one cookie (sorry if terminology is wrong, but i do know how to do it).
Little town = 9/$8 = $1.125 per cookie
College town = 30/$13 ≈ $2.3076 per cookie
Now we are sure of how much each costs and can determine how much she would have spent at each place.
Little town= $1.125*10= $11.25
College town= $2.3076*10≈ $23.08
Now, subtract little town from college town to figure out the savings.
23.08-11.25= $11.83
Thus, she saved $11.83.
Answer:
x³ sin(x)
Step-by-step explanation:
Tabular method is a special form of integration by parts. It works by taking derivatives of u and integrals of dv. You multiply diagonally, then sum the results, alternating the signs.
The important thing to note is that this will produce an antiderivative only if the derivatives of u eventually become 0. So the correct choice is x³ sin(x), because the derivatives of x³ eventually becomes 0:
d/dx (x³) = 3x²
d/dx (3x²) = 6x
d/dx (6x) = 6
d/dx (6) = 0
Let the number of blue marbles be x
number of yellow marbles = x/3
number of green = x- 90
ATQ
x + x/3 + x - 90 = 694
2x + x/3 = 784
(6x + x)/3 = 784
7x/3 = 784
x = 784 x 3/7
x = 112 x 3
x = 336
number of blue marbles = 336
