(4x - 1)2 = 11
(4x - 1) = 22
4x - 1 = 22
4x = 23
x = 5.75
Step-by-step explanation:
Draw the triangle formed by the ray.
The hypotenuse of the triangle is:
c² = a² + b²
c² = (-5)² + (2√7)²
c² = 25 + 28
c = √53
Therefore:
cos β = -5 / √53
Or, as a proper fraction:
cos β = -5√53 / 53
Answer:
$221.30
Step-by-step explanation:
Each check or withdrawal reduces (subtracts from) the balance. Each deposit increases (adds to) the balance. The final balance is ...
$85.30 -23.70 -35.63 +325.33 -130.00 = $221.30
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A calculator is a useful tool for this. A spreadsheet or money management program can also do the trick.
If
is a zero of
, then we can write

for another polynomial
.
Note that
. Then

so that
is a root of
.