(85 + 84 + 78 + x) / 4 = 86
(247 + x) / 4 = 86
247 + x = 86 * 4
247 + x = 344
x = 344 - 247
x = 97 <=== her score was 97
Answer:
432 pages.
Step-by-step explanation:
We know Madison reads 24pgs/ per day. She reads for nine days, so she reads 24*9 pages, or 216.
We know also that this is halfway through her book, so 2*216= the whole book, so the book has 432 pages
Answer:
Set
−
3
+
3
√
3
i
equal to
0
.
−
3
+
3
√
3
i
=
0
Since
−
3
+
3
√
3
i
≠
0
, there are no solutions.
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
44 ÷ 11 = 4
Critical points occur when
, which happens for
and
.
Check the sign of the second derivative at each critical point to determine the function's concavity at that point. If it's concave (
), then a maximum occurs; if it's convex (
), then a minimum occurs.
You have
and so
This means a maximum of
and a minimum of
.
