A tetrahedron is a shape made out of four triangular faces, and it has a total of <span>six edges
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Answer:
Is that the whole question or....
Combine like terms
-7y² + 6y² - 2y² = -3y²
4y + (-5y) - (-9y) = 4y - 5y + 9y = 8y
9 + 9 - (-2) = 9 + 9 + 2 = 20
-3y² + 8y + 20 is your answer
hope this helps
Perimeter is the sum of all the sides of the shape
do you know the length of each side of the parallelogram?
Answer:
14,400
Step-by-step explanation:
Hope this helpfull..but if it's not,im so sorry