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Answer:
-2.1
Step-by-step explanation:
We have an equation and the question is asking us to look for x.
To solve, we must isolate x and get it on its own.
2.5(x + 4) = 4.75
Distribute the 2.5 to get rid of the parenthesis :
(2.5(x) + 4(2.5)) = 4.75
2.5x + 10 = 4.75
Subtract ten from both sides :
2.5x = -5.25
Divide 2.5 by both sides to get x alone :
x = -2.1
There are four different ways to fold the square in half, however there are no different ways to fold the letter G.
A square has four symmetry lines.
Each symmetry line splits the square in half.
This indicates that the square can be folded into one half along any of its lines of symmetry.
As a result, there are four different methods to fold the square in half.
There is no symmetry line in the letter G.
This indicates the letter can't be folded such that the two parts are exactly aligned.
As a result, there are no methods to fold the letter G.
Answer:
7. A = π
8. A = 6.25π
9. A = 16π
Step-by-step explanation:
When you have a bunch of similar problems that all use the same formula, it is usually convenient to solve the problem in generic terms, then put in the specific numbers.
You are asked to find A, and you are given the formula ...
To rewrite this as an equation for A, you divide by its coefficient, 4π.
If you like, you can go one step further, replacing C with kπ. Now, you have ...
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7. k=2, A=(2^2)/4·π
A = π
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8. k=5, A=(5^2)/4·π
A = (25/4)π
A = 6.25π
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9. k=8, A=(8^2)/4·π
A = 16π