An equilateral triangle is a triangle where all sides are of equal lengths. So, the angles are of equal values as well which is 60. We use the angle and the height of the triangle to determine the side length. We do as follows:
tan (60) = 15 / base/2
base = 10√3 = side length
The correct answer should be y=4x + 1d where x equals the number of personal pizzas, and d equals the number of drinks.
She didn't account for the number of drinks ordered for more than one meal.
Answer:

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Answer:
C
Step-by-step explanation:
its a wild guess because you didn't add a picture or anything to show the pyramid
Answer:
F, D, E, and B are all correct (10, 8, 7, and 4)
Step-by-step explanation: