In this case, I say the answer is A because most short studies dont create valid samples. It all depends on what the short study was about...
Mary is wrong because ∠A = ∠B = 63°, while ∠C = x ≠ 63°
<h3>What is a
triangle?</h3>
A triangle is a polygon with three sides and three angles. Types of triangles are equilateral, isosceles and right angled.
An isosceles triangle is a triangle in which two sides and two angles are equal.
From the diagram:
∠A = ∠B (base angles)
Mary is wrong because ∠A = ∠B = 63°, while ∠C = x ≠ 63°
Find out more on triangle at: brainly.com/question/17335144
Formula: (cost of ticket + cost of popcorn) * # of friends = total cost
Which would give us (8 + x) * 5 = 62.5
Solve for x.
8 + x = 12.5 {divide each side by 5}
x = 12.5 - 8
x = 4.5
Each small bag of popcorn costs $4.50.
Answer:
v = 1
Step-by-step explanation:
-6(9-9v)
-6*9 = -54
-6*(-9v) = 54v
-54+54v = 0
+54 +54
54v = 54
divide both sides by 54
v = 1
Answer: a= (4x-1)(6x+9)
Step-by-step explanation:
area= length x width