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3 years ago

What is the axis of symmetry of the function f(x)= -(x+9)(x-21)

Mathematics

1 answer:

Vinil7 [7]3 years ago

6 0

Answer:

The axis of symmetry is x = 6

Step-by-step explanation:

To find this, first find the two x-intercept values and then take the average. This will always be the line of symmetry.

x + 9 = 0

x = -9

x - 21 = 0

x = 21

Now take the average of these two numbers.

(-9 + 21)/2

12/2

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Answer:

If both sides are integers, one side will be 4 feet and the other will be 6 feet. The other solution is the symmetrical solution (4 feet instead of 6 feet, and 6 feet instead of 4 feet).

Step-by-step explanation:

We have a rectangular blanket, that has a diagonal that measures h=7.21 feet.

The two sides of the rectangle a and b can be related to the diagonal h by the Pithagorean theorem:

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2 years ago

a pair of pants that regularly costs $55 are on sale for 35% off the regular price what is the sale price?

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Source:
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valentinak56 [21]

You would form this inequality:

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So, 2x is less than or equal to 128.
Divide 128 into two to get 64.

The height of the frame must be 64 inches.

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