Answer:
Step-by-step explanation:
Volume of the stack of paper is 140.25 cubic inches
The length and width of the stack will be equal to that of a single sheet of paper so
Let be the height of the stack.
Volume of the stack would be
So the stack has a height of 1.5 inches. Now there are 400 sheet of paper in the stack.
Thickness of one sheet of paper is given by
Hence, the height of each sheet of paper is .
B.77 x 7-10
C. 7-2 x 7-5
D. 7-5 x 72
(All expressions have an Integer either negative or positive u just can't type it correctly here and B and D or not 77 or 72 it's 7 and positive 7 and D is 7 positive 2
(b) Find the height above the ground where the plank touches the wall. Round to the nearest foot.
Please someone help
what does ? equal
Answer:
2/81
Step-by-step explanation:
let ? be A,
A×81/2=1
A=1×2/81
A=2/81
The quadratic expression (x+4)² = x² + 8x + 16.
The given expression is,
(x+4)²
The expression (x+4)² represents a mathematical operation called "squaring."
To expand it, we need to multiply the expression by itself.
So, (x+4)² becomes (x+4) * (x+4).
When we multiply these terms, we apply the distributive property and combine like terms.
After simplifying, we get x² + 8x + 16.
Or we can directly use the identity,
(a+b)² = a² + b² + 2ab
Here a = x and b = 4
(x+4)² = x² + 4² + 8x
Hence,
(x+4)² = x² + 8x + 16
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