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solmaris [256]
3 years ago
6

What is the value of x in the figure ?

Mathematics
2 answers:
bekas [8.4K]3 years ago
5 0
You’d have to take the equation and set it equal to 145. So 2x+15=145 and solve it.
2x=130
x=65
morpeh [17]3 years ago
3 0

Step-by-step explanation:

2x+15= 145°

( vertically opposite angles)

2x=145-15 = 130

x =  \frac{130}{2}

x = 65

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The ages of the winners of a cycling tournament are approximately bell-shaped. The mean age is 27.2 years, with a standard devia
elena-14-01-66 [18.8K]

Answer:

a. z-score = -1.2

b. The age 23 years old is -1.2 standard deviations below the mean

c. The age is not unusual

Step-by-step explanation:

a. Transformation to z-score

Mathematically;

z-score = (x - μ)/σ

where σ and μ are the standard deviation and the mean respectively.

From the question, x = 23, μ = 27.2 and σ = 3.5

Let’s put these into the equation;

z-score = (23-27.2)/3.5 = -1.2

b. Interpretation of result

The interpretation is that 23 years old is -1.2 standard deviations below the mean

c. Determination

The age is not unusual. This is because any z-value below -2 or above 2 is considered unusual

-1.2 is above -2 and thus it is not unusual

7 0
3 years ago
Finding the area of this parallelgram
Shkiper50 [21]

The area of the parallelogram with a height of 13cm and base 20cm is 260cm².

<h3>How to find area of a parallelogram?</h3>

A parallelogram is simply a quadrilateral with two pairs of parallel sides.

The area of a parallelogram is expressed as;

A = base × height

Given the data in the diagram;

  • Height of the parallelogram = 13cm
  • Base of the parallelogram = 20cm
  • Area of the parallelogram = ?

Plug the given values into the equation above and solve for A.

A = base × height

A = 20cm × 13cm

A = 260cm²

The area of the parallelogram with a height of 13cm and base 20cm is 260cm².

Learn more about parallelogram here: brainly.com/question/1563728

#SPJ1

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Answer:

Step-by-step explanation:

1/2k - 3/8k.....lowest common denominator is 8

4/8k - 3/8k = 1/8k <===

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vlabodo [156]
Subtraction, you’d -6 to the other side and m=-10
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Before the 1936 US presidential election, a popular poll predicted that Alfred Landon would comfortably win against Franklin D.
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Answer:

wrong subject

Step-by-step explanation:

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