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viktelen [127]
3 years ago
15

Evaluate the expression. Will choose brainliest

Mathematics
2 answers:
const2013 [10]3 years ago
8 0

Answer:

-213

Step-by-step explanation:

=3|x+y|²-(xy)²

<u>S</u><u>u</u><u>b</u><u>t</u><u>i</u><u>t</u><u>u</u><u>t</u><u>e</u><u> </u><u>v</u><u>a</u><u>l</u><u>u</u><u>e</u><u> </u><u>o</u><u>f</u><u> </u><u>x</u><u> </u><u>a</u><u>n</u><u>d</u><u> </u><u>y</u><u> </u><u>a</u><u>b</u><u>o</u><u>v</u><u>e</u><u>:</u>

=3(|3+-5|)²-(3×-5)²

=3(|-2|)²-(-15)²

=3(2)²-(225)

=3(4)-225

=12-225

=-213

<u>N</u><u>o</u><u>t</u><u>e</u><u>:</u><u> </u><u>I</u><u>f</u><u> </u><u>y</u><u>o</u><u>u</u><u> </u><u>n</u><u>e</u><u>e</u><u>d</u><u> </u><u>t</u><u>o</u><u> </u><u>a</u><u>s</u><u>k</u><u> </u><u>q</u><u>u</u><u>e</u><u>s</u><u>t</u><u>i</u><u>o</u><u>n</u><u>,</u><u>I'll</u><u> </u><u>g</u><u>l</u><u>a</u><u>d</u><u>l</u><u>y</u><u> </u><u>g</u><u>i</u><u>v</u><u>e</u><u> </u><u>y</u><u>o</u><u>u</u><u> </u><u>a</u><u>n</u><u>s</u><u>w</u><u>e</u><u>e</u><u>.</u><u>T</u><u>h</u><u>a</u><u>n</u><u>k</u><u>s</u>

svet-max [94.6K]3 years ago
3 0

Answer:

-213

Step-by-step explanation:

3|3-5|^2-(-15)^2

3(4)-225

=12-225= -213

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Answer:

(x + 6, y + 0), 180° rotation, reflection over the x‐axis

Step-by-step explanation:

The answer can be found out simply , a trapezoid has its horizontal sides usually parallel meanwhile the vertical sides are not parallel.

The horizontal parallel sides are on the x-axis.

Reflection over y- axis would leave the trapezoid in a vertical position such that the trapezoid ABCD won't be carried on the transformed trapezoid as shown in figure.

So option 1 and 2 are removed.

Now, a 90 degree rotation would leave the trapezoid in a vertical position again so its not suitable again.

In,The final option (x + 6, y + 0), 180° rotation, reflection over the x‐axis, x+6 would allow the parallel sides to increase in value hence the trapezoid would increase in size,

180 degree rotation would leave the trapezoid in an opposite position and reflection over x-axis would bring it below the Original trapezoid. Hence, transformed trapezoid A`B`C`D` would carry original trapezoid ABCD onto itself

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3 years ago
The shorter leg of a right triangle is 14 feet less than the other leg. Find the length of the two legs of the hypotenuse is 25
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Answer:

  9.233 ft, 23.233 ft

Step-by-step explanation:

If the shorter leg is x, then the longer leg is x+14 and the Pythagorean theorem tells you ...

  x^2 + (x +14)^2 = 25^2

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The two leg lengths are √263.5 ± 7 feet, {9.23 ft, 23.23 ft}.

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Step-by-step explanation:

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Step-by-step explanation:

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