2 years ago

Which of these expressions represents the sum of two rational numbers being rational?

Mathematics

1 answer:

GaryK [48]2 years ago

3 0

Answer:

i think its number 2 hope its correct

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Find cotθ, cosθ, and secθ, where θ is the angle shown in the figure.

Darina [25.2K]

Answer:

$\cos( \theta) = \frac{5}{8} \\ {8}^{2} = {5}^{2} + {opp}^{2} \\ {opp}^{2} = 64 - 25 = 39 \\ opp = \sqrt{39} \\ \sin(\theta) = \frac{\sqrt{39}}{8} \\ \tan(\theta) = \frac{ \sqrt{39} }{5} \\ \cot(\theta) = \frac{1}{\tan(\theta)} = \frac{1}{\frac{ \sqrt{39} }{5}} \\ \cot(\theta) = \frac{5}{ \sqrt{39} } \\ \csc( \theta) = \frac{1}{\sin(\theta)} = \frac{1}{\frac{\sqrt{39}}{8}} \\ \csc( \theta) = \frac{8}{ \sqrt{39} } \\ \sec( \theta) = \frac{1}{\cos( \theta) } = \frac{1}{ \frac{5}{8} } \\ \sec( \theta) = \frac{8}{5}$

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1 year ago

There are 18 students in a class. Each day, the teacher randomly

Maurinko [17]

The answer is (3) 4896.

This number comes from multiplying 18 x 17 x 16

This is because any of the 18 students could be picked as a leader. Then, any of the remaining 17 students could be picked as a recorder. Then, any of the remaining 16 students could be picked as a timekeeper. Therefore, you multiply 18 by 17 by 16 to get 4896 combinations.

8 0

2 years ago

Hi plz answer this I'll give u more points if u do

Brrunno [24]

Answer:

6 feet in the distance

Step-by-step explanation:

6 0

1 year ago

an amusement park charges $6 per student after a $72 fee. what is the total cost and how many students go to the park?

julia-pushkina [17]

72+6x=total cost
x=number of students

5 0

2 years ago

What is the distance between points A and B? A. 1/3 B. 1/2 C. 1 1/3 D. 1 1/2

Savatey [412]

Answer:

A. 1/3

Step-by-step explanation:

From 1 to ___, ____, and 2 is half and half that would be 2 and a half. the only solution would be 1/3

4 0

1 year ago