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3 years ago

A) Work out the value of x and give

Mathematics

1 answer:

user100 [1]3 years ago

4 0

Answer:

x = 106°

y = 127°

Step-by-step explanation:

x = 2* 53° = 106°

(Measure of the angle subtended on the center of the circle is twice the measure of inscribed angle)

y = 1/2 ( 360° - 106°)

(By inscribed angle theorem)

y = 1/2 *254°

y = 127°

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Problem 1 [4 pts]: The maintenance cost of machines are uniformly distributed from 0 to 160 (dollars). If a random sample of 75

Andru [333]

Answer:

$6,000

Step-by-step explanation:

The mean value of a sample is assumed to be the same as the mean of the population. The mean of a uniformly distributed variable between 0 and 160 is:

$M = \frac{0+160}{2}\\ M=\$80$

If the mean cost for each machine is $80, the mean aggregate cost for a sample of 75 machines is:

$M_{75}=75*\$80\\M_{75}=\$6,000$

The mean aggregate maintenance cost is $6,000.

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4 years ago

What is 1 and 1/6 minus 7/12 ?

Damm [24]

$1 \frac{1}{6} - \frac{7}{12} \\ 
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 \\ \frac{7x2}{6x2}= \frac{14}{12} \\ 
 \\ \frac{7x1}{12x1}= \frac{7}{12} \\ 
 \\ \frac{14}{12} - \frac{7}{12}= \frac{7}{12} \\ 
 \\ Solution: \frac{7}{12} 
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4 years ago

Which expression is equivalent to

Amiraneli [1.4K]

Answer:

this is a random question so it can not be answer

Step-by-step explanation:

ask a real answer pls

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4 years ago

Why was the parabola feeling down today?

Archy [21]

Answer:

Why was the parabola feeling down today?
Because of negative 'a'

y = ax^2 + bx + c is the formula of parabola

When a > 0, parabola opens up

When a < 0, parabola opens down

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3 years ago

ABC stock sold for $64.50 four days later the same stock sold for $47.10 what is the average change per day?

Masteriza [31]

64.50-.10=64.40
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(my way of working math when i'm not in school is weird, but still accurate)

17.4/4=4.35.

It's average change per day is -4.35.

8 0

4 years ago