Answer:
-70
Step-by-step explanation:
This is not an expression due to the =, because that makes it an equation. So I will assume the = is a +, to make it an expression.
1. Combine all negative numbers: -68 - 4 - 3 = -75
2. Add to 5, -75 + 5 = -70
Volume of square pyramid can be calculated by the formula :
V=
a is the length of base and h is the height of the pyramid.
In the given figure a= x in.and h =
in.
Volume of pyramid given V =486 cubic inches.
Substituting these values in volume of pyramid we have:
486=
÷ 3
Or 486=
486= 
Multiplying both sides by 12
5832 =

Or x= 18 in.
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Answer:
See explanation
Step-by-step explanation:
Triangle ABC ahs vertices at points A(-4,-4), B(-1,-2) and C(-1,-4).
<u>1 way:</u> First reflect this triangle across the y-axis to form the triangle A''B''C'' which vertices are at points A''(4,-4), B''(1,-2) and C''(1,-4).
Then translate this triangle 7 units up to form the triangle A'B'C' with vertices:

<u>2 way:</u> First translate this triangle 7 units up to form the triangle A''B''C'' which vertices are at points A''(-4,3), B''(-1,5) and C''(-1,3).
Then reflect this triangle across the y-axis to form the triangle A'B'C' with vertices:

-5x^4(-3x^2 + 4x -2)
Multiply the number on the outside by each number inside the parentheses:
-5x^4 x -3x^2 = 15x^6
-5x^4 x 4x = -20x^5
-5x^4 x -2 = 10x^4
Now combine them in order of exponents:
15x^6 - 20x^5 + 10x^4