38. Slice it by forming a trapezoid on top, a 4x4 square in the middle, and then a triangle at the bottom.
39. Slice it by forming two separate triangles on top, a right triangle, and a scalene triangle. The last figure at the bottom should be another trapezoid with a height of 2.
Answer:

Step-by-step explanation:
<h2>Algebraic expressions</h2>
Difference: should be subtract.
N: should be a number.
Sum: Add
Therefore, the correct answer is 10-N=8+N.
Hope this helps!
I know that one is obtuse and acute
Answer:
B
Step-by-step explanation:
m∠HKF = 87°
Solution:
Given data:
m(ar JF) = 135° and m(ar GH) = 42°
GJ is the diameter of the circle.
<em>Angle in a diameter is 180°.</em>
⇒ m(ar JF) + m(ar FG) = 180°
⇒ 135° + m(ar FG) = 180°
Subtract 135° from both sides of the equation.
⇒ m(ar FG) = 45°
⇒ m(ar FGH) = m(ar FG) + m(ar GH)
⇒ m(ar FGH)= 45° + 42°
⇒ m(ar FGH) = 87°
<em>The measure of the central angle is congruent to the measure of the intercepted arc.</em>
⇒ m∠HKF = m(ar FGH)
⇒ m∠HKF = 87°