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spin [16.1K]
3 years ago
14

Which statements are true regarding the symmetry of the isosceles trapezoid? Check all that apply.

Mathematics
2 answers:
Ad libitum [116K]3 years ago
7 0

Answer:

1, 3, and 5

Step-by-step explanation:

Natali5045456 [20]3 years ago
6 0

Answer:

1 3 5

Step-by-step explanation:

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Use an algebraic approach to solve the problem.
qaws [65]

Answer:

Her first exam score was a 78, her second exam score was a 89, and his third exam score was a 94.

Step-by-step explanation:

Use the formula for the mean: sum of elements / number of elements

Let x represent her first exam score.

Her second exam score can be represented by x + 11, since it was 11 points better than her first.

Her third exam score can be represented by (x + 11) + 5, since it was 5 points better than her second.

Plug in all of these expressions into the mean formula. Plug in 87 as the mean, and plug in 3 as the number of elements (since there are 3 scores):

mean = sum of elements / number of elements

87 =  ( (x) + (x + 11) + (x + 11) + 5 ) / 3

Add like terms and solve for x:

87 = (3x + 27) / 3

261 = 3x + 27

234 = 3x

78 = x

So, her first score was a 78.

Find her second score by adding 11 to this:

78 + 11 = 89

Find her third score by adding 5 to the second score:

89 + 5 = 94

Her first exam score was a 78, her second exam score was a 89, and his third exam score was a 94.

6 0
3 years ago
Find the equivalent fraction for 10/20
dezoksy [38]
\frac{10}{20} =  \frac{ \frac{10}{10} }{ \frac{20}{10} } =  \frac{1}{2}
6 0
3 years ago
Find the value of the nearest tenth<br> X=
Alex777 [14]

Answer:

12,7

Step-by-step explanation:

use pathogaras theorem

c^2=a^2+b^2

8 0
3 years ago
PLEASE HELP ASAP
Leona [35]

Answer:

5-rl=5

Step-by-step explanation:

rl=5-5= and anawer is=0

7 0
3 years ago
−2(x+1/4)+1=5 ​<br> whats the value of x
harkovskaia [24]

The value of x is: Solve for x by simplifying both sides of the equation, then isolating the variable.

x=−9/4


4 0
3 years ago
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