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azamat
3 years ago
11

I need help on this question

Mathematics
2 answers:
navik [9.2K]3 years ago
8 0
X=0 is the correct line of symmetry
frosja888 [35]3 years ago
4 0

If you look at the figure, you will see that the x-axis is actually the line of symmetry for the trapezoid. The equation of the x-axis can be written as x = 0.

Therefore, the answer is (A), x = 0.

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9+a=23 need to solve this problem​
Pavel [41]

Answer:

a = 14

Step-by-step explanation:

Given

9 + a = 23 ( subtract 9 from both sides )

a = 14

4 0
3 years ago
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The___ of an angle is the ratio of the opposite leg length to the hypotenuse length.
ozzi
The answer would be sine
7 0
2 years ago
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The mean number of words per minute (WPM) typed by a speed typist is 149 with a standard deviation of 14 WPM. What is the probab
Troyanec [42]

Answer:

78.81%

Step-by-step explanation:

We are given;

Population mean; μ = 149

Sample mean; x¯ = 147.8

Sample size; n = 88

standard deviation; σ = 14

Z-score is;

z = (x¯ - μ)/(σ/√n)

Plugging in the relevant values;

z = (147.8 - 149)/(14/√88)

z = -0.804

From z-distribution table attached, we have; p = 0.21186

P(X > 147.8) = 1 - 0.21186 = 0.78814

In percentage gives; p = 78.81%

6 0
2 years ago
What percentage is equal to the fraction 4 over 25?
Vikki [24]
4/25 = 0.16. 0.16 is equal to 16%
5 0
3 years ago
An airplane flying into a headwind travels the 1890-mile flying distance between two cities in 3 hours. On the return flight, th
aksik [14]

Answer:

Velocity (against wind) = 1,890 / 3 = 630 mph

Velocity (with the wind) = 1,890 / 2.5 = 756 mph

Plane speed (still air) = 630 + wind speed

Plane speed (still air) = 756 - wind speed

Adding both equations equals

2 * Plane speed (still air) = 1,386

Plane Speed = 693 mph

Source: https://www.1728.org/veloccal.htm


Step-by-step explanation:


4 0
2 years ago
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