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Step2247 [10]
3 years ago
9

If the vertices of triangle QRS have coordinates Q(1, −2), R(3, −2), and S(2, −4), which coordinates are the coordinates of the

vertices of triangle QꞌRꞌSꞌ when triangle QRS is reflected across the x-axis?
A. Qꞌ(−1, −2), Rꞌ(−3, −2), Sꞌ(−2, −4)
B. Qꞌ(1, 2), Rꞌ(3, 2), Sꞌ(2, 4)
C. Qꞌ(2, 1), Rꞌ(2, 3), Sꞌ(4, 2)
D. Qꞌ(2, −4), Rꞌ(6, −4), Sꞌ(4, −8)
Mathematics
1 answer:
Artist 52 [7]3 years ago
8 0
B
The value of x does not change in reflection across the x axis while the sign of the value of y is reversed because it travels a distance equal to its distance from the x-axis in the negative y-axis.
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3 years ago
(−4)−(−2)–{(−5)–[(−7)+(−3)–(−8)]}
garik1379 [7]

Answer:

1

Step-by-step explanation:

(−4)−(−2)–{(−5)–[(−7)+(−3)–(−8)]}

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worty [1.4K]

Let's carry this math sentence over to its natural, "shapey" element. We're going to look at each term not as an ordinary number, but as <em>the area of some shape</em>.

x² (read as "x <em>squared"</em>) can be seen as the area of a square with side lengths of x. 2x can similarly be seen as the area of a <em>rectangle </em>with a length of x and a width of 2. (Picture 1)

What's our question actually asking, though? Something about <em>perfect squares</em>. More specifically, we're looking for something to add on that'll <em>make this thing a perfect square</em>. We're trying to find a missing piece we can slot in to make a square, in other words. Problem is, our shapes don't look much like a square if we put them together right now. We need to do a little cutting and gluing first.

First, we're gonna cut the 2x rectangle lengthwise, getting two rectangles with an area of x, a length of 1, and a width of x. Next, we're going to attach them to the x² square, creating this shape that looks, strangely, like a square with a little bit missing from it (picture 2). What we're trying to do is <em>complete this square, </em>to find the area of that little missing chunk.

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5 0
3 years ago
Read 2 more answers
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Maksim231197 [3]
<h3>Answer:  18 miles</h3>

Reason:

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The difference of those results is 44-26 = 18 miles.

If you wanted to do the full calculation in one line, then it would be

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ser-zykov [4K]

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Step-by-step explanation:

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