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3 years ago

Why can a square never be a trapezoid

Mathematics

2 answers:

skelet666 [1.2K]3 years ago

7 0

A square can never be a trapezoid because a trapezoid is a completely different shape with slanted sides.

Karolina [17]3 years ago

4 0

Because a trapezoid has a diffrent kind of shape its side and the square is straight

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In order for RECT to be a rectangle, what must the value of x be?

Readme [11.4K]

Answer:

x = 21

Step-by-step explanation:

If RECT is a rectangle, each of its interior angles are right angles, 90°. Since ∠RTC is split into two angles, the sum of the two angles must be 90°. (Angles that add to 90° are called complementary angles).

∠RTC = ∠RTE + ∠ETC Formula for complementary angles

90 = 2x + 6 + 42 Substitute the angles

90 = 2x + 48 Combined like terms to simplify

Now isolate "x" to solve

90 - 48 = 2x + 48 - 48 Subtract 48 from both sides

42 = 2x

42/2 = 2x/2 Divide both sides by 2

x = 21

Therefore x is 21.

6 0

3 years ago

A rectangular parking lot is enclosed by concrete barriers 5 feet long. There are 160 barriers in total. Determine the maximum a

LuckyWell [14K]

Well you just multiply 5 by 160 and get 800ft

6 0

3 years ago

Please need help on this!

GrogVix [38]

F(x) = x(x -1)

f(3) = 3*2 = 6
f(6) = 6*5 = 30

so f(f(3)) = 30 . . . . . selection A

8 0

3 years ago

2 3/4 Super Sammy ate 13/5 slices of pizza for lunch and 2 2/10 slices for dinner. How much pizza did Super Sammy eat altogether

MaRussiya [10]

Answer:

19 pizza

Step-by-step explanation:

4+5+10=19 pizza

7 0

3 years ago

Sisters Amilia and Bianca play games together often. Let A represent the number of games Amilia wins monthly, and let B represen

Harman [31]

Using addition of variables, it is found that the mean of S is of 73 and the standard deviation is of 8.5.

<h3>What happens to the mean and the standard deviation when two variables are added?</h3>

The mean is the sum of the means.

The standard deviation is the square root of the sum of variances.

In this problem, for variables A and B, we have that:

$\mu_A = 35.5, \sigma_A = 5.1$

$\mu_B = 37.3, \sigma_B = 6.8$

Variable S is the sum of A and B, hence:

$\mu_S = \mu_A + \mu_B = 35.5 + 37.3 = 73$

$\sigma_S = \sqrt{\sigma_A^2 + \sigma_B^2} = \sqrt{5.1^2 + 6.8^2} = 8.5$

The mean of S is of 73 and the standard deviation is of 8.5.

More can be learned about addition of variables at brainly.com/question/26156502

7 0

2 years ago