Answer:
it has 11 faces 10 sides for the decagon + 1 for the base
It does have one face that is a decagon, which is the base, the rest are triangles
it has 20 edges
Step-by-step explanation:
The answer is 30 I’m sure of it
Answer:
y =84
Step-by-step explanation:
25/100*Y = 21
100/25 * 25y/100 =21 *100/25
y = 2100/25
y = 84
The expression that shows the surface area of the pyramid is (2 * 2) + 4(0.5 * 2 * 3)
<h3>What is an
equation?</h3>
An equation is an expression that shows the relationship between two or more variables and numbers.
The surface area of pyramid = sum of individual area of the surface
Surface area = (2 * 2) + 4(0.5 * 2 * 3)
The expression that shows the surface area of the pyramid is (2 * 2) + 4(0.5 * 2 * 3)
Find out more on equation at: brainly.com/question/13763238
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Answer:
simplified: 3x^2+7x+5y-4
Step-by-step explanation:
all you gotta do is you add -5x and 12x
