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Sonja [21]
2 years ago
12

Monique is painting a circle on the lunchroom wall. The radius of the circle is 3 feet

Mathematics
2 answers:
worty [1.4K]2 years ago
8 0

Answer:

Step-by-step explanation: find the center of the circle

Gelneren [198K]2 years ago
5 0
1. find the center of the circle
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Express (sin 30 + i cos 30)^18​
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Answer:

-i.

Step-by-step explanation:

Applying DeMoivre' s theorem:

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= sin(18*30) + i cos(18*30)

= sin 540 + i cos 540

= sin (3*180) + i cos (3*180)

= 0 + -1 * i

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3 years ago
There are 20 teachers and 705 students in cory's school. what is the ratio of teachers and students
Aleksandr [31]

We know that ratios can be shown with both fractions and colons.

20:705

or

\frac{20}{705}

It also looks like we can simplify this by dividing by 5.

20/5 = 4

705/5 = 141.

This means that for every 4 teachers, there are 141 students.

The ratio for teachers to students is:

4 : 141

6 0
1 year ago
Find the missing value for the radioactive isotope. (Round your answer to two decimal places.)
Otrada [13]

Answer:

1.1289 grams ( approx )

Step-by-step explanation:

Since, the final quantity of an element which has half life of n periods,

A=P(\frac{1}{2})^{\frac{t}{n}}

Where,

P = initial quantity,

t = total number of periods,

Here, A = 1 gram, t = 1000 years, n = 5715 years,

By substituting the values,

1 = P(\frac{1}{2})^\frac{1000}{5715}

\implies P = 2^\frac{1000}{5715}\approx 1.1289 ( using calculator )

Hence, the initial quantity would be 1.1289 grams ( approx )

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Kofi, Kate and Ladi shared an amount
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Step-by-step explanation:

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