Answer:
∠ EFA
Step-by-step explanation:
complementary angles sum to 90°
∠ EFA and ∠ EFA form a right angle ad sum to 90°
Answer:
Step-by-step explanation:
We can observe the figures are mirrored over y- axis.
<u>This is a reflection and the rule is:</u>
Answer:what equation
Step-by-step explanation:
Answer:
(A) 165
(B) 330
Step-by-step explanation:
Total number of students in the class = 11
(A) How many different combinations of 3 selected students can he create?
ⁿCₓ = n! ÷ [(n - x)! x!]
n = 11, x = 3
11! / [8! 3!] = 165
<em>HINT: 8! or 8 factorial represents [8x7x6x5x4x3x2x1]</em>
(B) How many different combinations of 4 selected students can he create?
ⁿCₓ = n! ÷ [(n - x)! x!]
n = 11, x = 4
11! / [7! 4!] = 330
<em>Same hint applies here, for all numbers with the factorial sign.</em>
Answer: The answer is 0.625 (the height of the cylinder is not needed!)
