Answer:
9
Step-by-step explanation:
f(x) = -x^2
f(3) = -3^2
f(3) = 9
Answer:
that puts the solution in the form ...
variable is ...
Step-by-step explanation:
It isn't always.
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Often, we like to have a solution be in the form ...
variable is ...
So, for an inequality, that puts the variable on the left:
x > 3
y < 27
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Personally, I like to see the answer in a form that has the variable and its values in the same relation as on a number line. This means, my preferred inequality symbols are < or ≤, since those have the smaller numbers on the left. I would write the first example above as ...
3 < x
showing that the shaded portion of the number line (representing possible values of the variable) is to the right of the open circle at 3. For me, it is more mental effort to translate x > 3 to the same image.
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The forms we choose to use are all about making communication as easy as possible.
Answer:
48
Step-by-step explanation:
25% of x = 0.25
12/0.25 = 48
Answer:
22.470
Step-by-step explanation:
In this example you have to use the trigonometric function sine which is defined as 
Plug in known values:
Multiply both sides by 25
Approximate sin(64) using a calculator:
Simplify
Answer:
I believe (D)
Step-by-step explanation:
-5x + 7 = -13
-7 -7
-5x = -20
-5/-5 -20÷-5
x=4
