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Vera_Pavlovna [14]
3 years ago
13

Simplify 7(n+2) A 7n-14 B -7n+14 C n+9 D 7n+14

Mathematics
1 answer:
zzz [600]3 years ago
5 0

The answer is D, 7n + 14.

⭐ Please consider brainliest! ⭐

✉️ If any further questions, inbox me! ✉️

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yuradex [85]
Well, a distance-preserving transformation is called a rigid motion, and the name suggests that it <em>moves the points of the plane around in a rigid fashion.</em>

A transformation is distance-preserving if the distance between the images of any two points and the distance between the two original points are equal.

If that's confusing, I get it; basically if you transform something, the points from the transformation are image points. Take the distance from a pair of image points, and take the distance from a pair of original points, and they should be the same for a <em>rigid </em>motion.

I keep emphasizing this b/c not all transformations preserve distance; a dilation can grow or shrink things. But if you didn't go over dilations, don't say nothin XD
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Can a right triangle be formed using these squares
Ilya [14]

Yes. The two smaller squares have a sum of 169 which is the value of the larger square.

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25 + 144 = 169

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3 years ago
I’m having trouble finding angle DCE, I figured out the angles in the kite (I hope), how do I find the angle next to it, it does
Rasek [7]

Answer:

180 -angle BCD

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if you've found angle BCD you should be able to find angle DCE as angles on a straight line equal 180°

7 0
3 years ago
Whitney read a total of 4 books over 2 months. if whitney has read 16 books so far, how many months has she been with her book c
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8 0
3 years ago
Select the correct answer from each drop-down menu.
erik [133]

Answer:

Grades 6 and 8

Step-by-step explanation:

If the relationship of girls to boys in two different grades are proportional, <u>they must have the same ratio</u>. To tackle this problem, we can find the <u>ratios</u> of genders in each grade and compare them.

Step 1, finding ratios:

Finding ratios is just like <u>simplifying fractions</u>. We will reduce the numbers by their<u> greatest common factors</u>.

  • GRADE 6:

9:12=\\3:4

  • GRADE 7:

12:18=\\2:3

  • GRADE 8:

15:20=\\3:4

  • GRADE 9:

25:36

<u>Can't be simplified!</u>

<u />

Step 2:

Notice how grades 6 and 8 both had a ratio of 3:4. We can conclude that these two grades have a proportional relationship between girls and boys.

<em>I hope this helps! Let me know if you have any questions :)</em>

<u />

8 0
3 years ago
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