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Snowcat [4.5K]
3 years ago
12

PLEASE HELP, WILL GIVE 20 POINTS.

Mathematics
1 answer:
OverLord2011 [107]3 years ago
6 0

Answer: 200cm^{2}

Step-by-step explanation:

To double the dimensions, you must multiply both the length and width by 2, so instead of just l*w=a, you have 2l*2w=b, which can be simplified even further to 2*2*l*w=b

Now, multiply the 2s together to get 4, making the equation 4lw=b. Since lw is a, and b is 4 times as much as a, you just need to multiply the original area by 4 to get the new area.

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slope : 3

y + 3 = 3(x + 5)

y + 3 = 3x + 15

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Finding the vaule of an angle ​
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(3x-5)+(x+1)=180
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Nikki just graduated from high school and would like to buy a car. If she received $3000 in graduation gifts from family friends
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7 0
3 years ago
Which of the following(s) is true of a rectangle?
arsen [322]
<h2>Explanation:</h2>

Let's take a look at all of our options.

A. it is also a square

  • A rectangle is NOT <em>always </em>a square because a square has congruent sides, so that means all four of its sides are <em>always </em>equal.
  • A rectangle <em>can </em>be a square but it can also not be a square, so therefore A cannot be an option because it is not always true about a rectangle.

B. the sum of its angle measures is 360

  • This is true because every quadrilateral's angle measures will add up to 360 degrees, no matter what. This is like how a triangle's angle measures always add up to 180 degrees.
  • B is an option because it is an ALWAYS true statement.

C. it has four congruent angles

  • A rectangle always has 90 degree angles, giving it its shape.
  • Since a rectangle always has the same-degree angles, that means that it DOES have four congruent angles.
  • C is also an option because it is always true.

D. it has four congruent sides

  • A rectangle does not ALWAYS have four congruent sides. Say for example a rectangle has a longer length than its width.
  • A square has four congruent sides, but a rectangle is not always a square, therefore this option is not applicable for a rectangle since it is not always true.
<h2>Answers:</h2>

B and C are always true of a rectangle.

7 0
3 years ago
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