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3 years ago

5

A triangle has points A(2,2), B(2,4), and C(6,3) and it's reflected over the x- axis. A'B'C are the coordinates of the reflected

image. What is the A' coordinate?

2 answers:

konstantin123 [22]3 years ago

6 0

The coordinates of A prime won't it's be (-2,-2)

Allisa [31]3 years ago

6 0

(2,-2)
When you are reflecting over the axis switch the y coordinate

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The second side of a triangular deck is 4 feet longer than the shortest side, and the third side is 4 feet shorter than twice th

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We don’t know the value of the shorter side, so we will categorize it as x. Side 2 is just 4 feet longer than x, so we would add 4 on to it. Side 3 has double the x, so we would multiply it be 2 for 2x, and subtract the 4 feet from it.

Side 1: x
Side 2: x + 4
Side 3: 2x - 4

If the perimeter is 64 feet, then all of the sides have to add up to it. Therefore, first we add all of the side lengths up:

x + x + 4 + 2x - 4 = 4x.

Now we put 4x, the amount of all these sides added up, equal to the perimeter of 64.

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Now that we know x is 16, we will substitute it in for all the side lengths’ equations.

We know that Side 1 was just x, so that will be 16. Since Side 2 was 4 more than x, we’d do 16 + 4 = 20. We substitute 16 in for x in Side 3’s equation: 2(16) - 4 = 32 - 4 = 28.

Therefore, the final lengths of all the sides are:

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<em><u>Solution:</u></em>

The product of the original numbers: xy

One number is decreased by 75 %

Let x be the number decreased by 75 %

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Let y be the number decreased by 20 %

new number = y - 20 % of y

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<em><u>Now the product is given as:</u></em>

$product = 0.25x \times 0.8y = 0.2xy$

<em><u>Now we have to find the percent decreased</u></em>

Subtract new product and original product and then divide by original product . Multiply the result by 100 to get percentage

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