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Alja [10]
2 years ago
14

Can you show me how you worked this: Evaluate the expression. 9! − 7!

Mathematics
1 answer:
Aloiza [94]2 years ago
3 0
I hope this helps you



9.8.7!-7!


7! (72-1)

7!.71
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The statement that does not match the others is the one at lower right.

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... Volume of triangular prism + Volume of rectangular prism

The volume of a <em>rectangular prism</em> is the product of its dimensions. The dimensions of the rectangular prism portion of the barn's volume are a, b, c, so the volume of that portion is ...

... Volume of rectangular prism = a·b·c

The volume of a <em>triangular prism</em> is the area of the triangular base multiplied by the length of the prism. Here, the triangular base has base dimension b and height (d-c), so its area is ...

... Area of triangular barn end = (1/2)b(d-c)

Since the length of the barn is "a", the volume of the triangular prism is ...

... Volume of triangular prism = (1/2)b(d-c)a = (1/2)·a·b·(d-c)

The <em>total volume</em> is the sum of the volumes of the parts ...

... a·b·c + (1/2)·a·b·(d-c) . . . . . . matches the <em>upper right</em> selection

This can be factored by removing a·b to outside parentheses:

... a·b·((1/2)·(d-c) + c) . . . . . . . . . matches the <em>lower left</em> selection

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Since the two left selections match the one at upper right, the odd one is the one at lower left.

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\int\limits^5_0 {f(x)} \, dx

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