Answer:
The top middle, top right, and bottom left shapes all have obtuse angles.
Step-by-step explanation:
Obtuse angles are greater than 90 degrees, so just look for the angles that don't look like 90 degrees.
I hope this helps!
Answer:
E = 56
Step-by-step explanation:
Given that E varies directly with
then the equation relating them is
E = k
← k is the constant of variation
To find k use the condition E = 40 when C = 25
k =
=
=
= 8, thus
E = 8
← equation of variation
When C = 49, then
E = 8 ×
= 8 × 7 = 56
Answer:
65
Step-by-step explanation:
(4-7i)(4+7i) =16 + 28i-28i -49i^2 ➡16 - 49i^2
16 + 49 = 65
the fault here is i^2= -1 and -1 multiplied by -49 is +49 not -49