-32=2(x^2+10x)
-32=2x^2+20x
-2x^2-20x-32=0
-2(x+2)(x+8)=0
therefore,
x+2=0 or x+8=0
so,...... x= -2 or -8
Where is the plot?
i need to see it to answer your question
Decay expression is stated as follows:
N(t) = N(o)e^(-0.693t/t1/2)
N(t) = Quantity remaining after time, t; N(o) = Initial quantity, t = time, t1/2 = Half life
Therefore,
N(6.55) = 2*e^(-0.693*6.55/5.2) = 0.835 g
Part A: Write an expression that Robie can use to determine how much black pepper is needed for 6 batches.
The first thing you should know in this case is the amount of pepper available and the amount of black pepper in each batches.
Available = s 2/3 teaspoon
Batches = 1/8 teaspoon
Let
x = number of batches:
y = black pepper
The expression is then:
y = 1/8x
0 <= x <= 6
---
Part B: Draw a Model to show how Robbie can find the product from Part A (do not say how to draw the model just say how to solve the expression in Part A.)
You must graph the line of part A:
y = 1/8x
Then, check for x = 6 the value of y to know how much black pepper is needed for 6 batches.
----
Part C: Does Robbie have enough black pepper for 6 batches of the soup? Explain your reasoning. (<--- PLEASE EXPLAIN.)
Substituting x = 6
y = 1/8 (6)
y = 6/8
y = 3/4
3/4> 2/3
Robbie has not enough black pepper for 6 batches of the soup
True. Because if you multiply 440 by 10, the answer is 4,400. So 4,400 is 10 times as much as 440.
To each number multiplied by 10, the answer is the same number with an additional zero to the right.
Hope this Helps! :)