There's really nothing to solve, since there's no equation there.
Perhaps you want that expression factored. We can do that.
First, all 3 terms share a common factor of 4. Let's pull that out,
and see what's left to be factored:
4x² + 12x - 40 = 4 (x² + 3x - 10) .
Now, the expression left inside the parentheses looks
like it might be a lot easier to handle.
Here's what the whole expression looks like after the
quadratic inside the parentheses is factored:
4 (x² + 3x - 10) = 4 (x + 5) (x - 2) .
There it is. Understand ... we haven't changed anything,
and we haven't solved anything. We only wrote the original
expression in a different form. It's still just an expression that
stands for a number, and we won't know the number until
somebody tells us the value of 'x' .
idk
Step-by-step explanation:
im to tired this sucks
I think the answer is w=-3,4
Answer:
Explanation: The resistance of an aluminum wire is given by
where:
Since the resistivity is in ohm-meters, we need to convert the length to meters and the area to square meters. But we need to convert mils to cmils first to get the cross sectional area of the wire.
To convert mils to cmils, we get the square of the diameter of the circle in mils because 1 cmil (or circular mil) is the area of the circle whose diameter is 1 mil. So, since the diameter of the wire is 100 mils, the cross-sectional area of the wire in cmils is given by:
Note that we convert the area in terms of scientific notation because the resistivity is expressed in scientific notation and it is easier to multiply very large and very small numbers if they are expressed in scientific notation.
Now, since
, the cross sectional area of the wire is equal to
Since 1 mile = 1,609.344 meters, 2 miles = 2 × 1,609.344 meters = 3,218.688 meters =
. .
Hence the resistance is given by
Answer: A y=4x^2+1
Step-by-step explanation:According to slope A is the answer