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3 years ago

Area of a sector of a circle is 1/6 to the area of circle. Find the degree measure of its min

Mathematics

1 answer:

Inga [223]3 years ago

8 0

Answer:

theta = 60

Step-by-step explanation:

let the radius BE R

and angle be theta

formula

theta/360 x pi r2= 1/6 x pi r2

pi r2 gets canceled on both sides

theta/360 = 1/6

theta = 360/6

= 60

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3 years ago

A math teacher gets a starting salary of $30,000. IF she gets a 1.5% increase in salary each year, what will her total income be

kolezko [41]

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Her Total Income is sum over the thirty 30 year period:

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3 years ago

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3 years ago

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An oven heating element turns on when the internal temperature falls to 20 degrees below the set temperature and turns off when

son4ous [18]

Answer:

The range of the oven is $385\leq T\leq 410$

Step-by-step explanation:

Consider the provided information.

The internal temperature falls to 20 degrees below the set temperature and turns off when the temperature reaches 5 degrees above the set temperature.

You preheat the oven to 405 degrees before putting a cake in and baking it for an hour at 405.

The internal temperature falls to 20 degrees, therefore the lowest set can be:

405-20=385 degree.

The temperature reaches 5 degrees above the set temperature 405, therefore the upper set is: 405+5=410 degree.

Hence, the temperature will be lying between 385 degree and 410 degree.

This can be written as: $385\leq T\leq 410$

Hence, the range of the oven is $385\leq T\leq 410$

4 0

3 years ago