F(x) = x² + x - 20 = x² + 5x - 4x - 20 = x(x + 5) - 4(x + 5) = (x + 5)(x - 4)
f(x) = 0 ⇔ (x + 5)(x - 4) = 0 ⇔ x + 5 = 0 or x - 4 = 0 ⇒ x = -5 or x = 4
Answer: C. x = -5 and x = 4.
To find the area that is shaded red, you find the area of the rectangle and subtract it by the area of the triangle.
Area of a rectangle:
A = l × w [ l = 11 in ; w = 6in ] Plug these numbers into the equation
A = 11 · 6
A = 66 in²
Area of a triangle:
[ b = 4 in ; h = 6 in ] Plug these #s into the equation


A = 12 in²
Area of rectangle - Area of triangle = Area of the shaded region
66 in² - 12 in ² = 54 in²
Your answer is B
Answer:
Left box: Outlier in this data set is (57,132)
Right box: because the finish time looks faster than expected for the age.
Step-by-step explanation:
As per the given table shows the
and
of
runners.
It is clear that people of age around
are finishing at around
and person with older age takes longer to finish.
One person of age
finishes in
, that looks as expected.
Another person of same age
finishes it too fast which is unexpected.
Therefore
is an outlier, because it looks a faster finish as per expected.
-18- -27 = -45 -45- -15 = -30
Answer:
THE ANSWER IS THE 1ST,2ND, AND 4TH.
Step-by-step explanation:
i just did this question and this is the answer it gave me! hope this helped!!! have a good day babes!