Answer:
x = 4 or x = -10 for equation x^2 + 6x = 40
Step-by-step explanation:
x^2 + 6 = 40
x^2 = 40 - 6
x^2 = 34
x = root(34) or x = -root(34) but this is not in the answer choice.
is it x^2 + 6x = 40
x^2 + 6x + 9 = 40 +9
(x + 3)^2 = 49
x + 3 = 7 or x + 3 = -7
x = 4 or x = -10
Both sides were multiplied by 3 to get Step 1, so the property is the Multiplication Property of Equality. Choice D.
As an improper fraction, the simplified answer would be 9/7 after you divide both top and bottom by 10
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If you need a mixed number, then 9/7 converts to 1 & 2/7 because
9/7 = 1 remainder 2
If you had 9 cookies and 7 friends, then each friend gets 1 whole cookie, and there will be 2 left over.
Result: 4020342569677260278
Answer:
The angle between any two faces of this pyramid is equal to 
Step-by-step explanation:
we know that
An equilateral triangle has three equal sides and three equal internal angles of measure 60 degrees
In this problem
All the faces in the regular triangular pyramid are equilateral triangles.
therefore
The angle between any two faces of this pyramid is equal to
