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Otrada [13]
3 years ago
6

Three students wrote expressions on their dry-erase boards.

Mathematics
1 answer:
OlgaM077 [116]3 years ago
3 0

Answer:

Student 2 and Student 3

Step-by-step explanation:

Student 2

-(5r - 3s + 1)

= - 5r +3s - 1

Student 3

= - 5r +3s - 1

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1.Name 4 other angles whose cosine is the same as cos pi/3 . Explain using mathematical language how you know this is true.
krok68 [10]

The trigonometry illustrates that the four angles whose cosine is the same as cos pi/3 will be 7∏/3, 13∏/3, 19∏/3, and 31∏/3

<h3>How to illustrate the information?</h3>

From the information, given cos (x), the value that is similar to cos x will be the sum of the angle and multiple of 360.

Therefore, for the angle cos(∏/3), the angles that are similar to this angle will be expressed as Cos(2∏n + ∏/3) where n is any positive integer.

Then the other four angles will be 7∏/3, 13∏/3, 19∏/3, and 31∏/3. Also, the statement that all angles that have the same cosine will have the same sine is false. The sine of an angle is simply equal to the cosine of the complementary angle.

Learn more on trigonometry on: brainly.com/question/7331447

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3 0
2 years ago
Directions: What does each of the following mean? Write out in words and phrases.
Iteru [2.4K]

Answer:

1. eleven plus t

2. seven times r times s times t

3. t minus seventeen

4. bracket ten times bracket n

5. 15 asterisk y

6. four times X

7. a plus b

8. fourteen times x plus three times y

4 0
3 years ago
5 out of nine students in the sophomore class in musicians if there are 450 students in the sophomore class for many of them are
Anarel [89]

Answer:

250 Students are musicians, 200 are not.

Step-by-step explanation:

Decimal Version:

If we take "5 out of every nine students are musicians" and make this a fraction we get 5/9. 5/9 as a decimal is approximately 55.555555555556. 55.555555555556% of 450 = 250. So that means 250 students are musicians.

Fraction Version : See attached image.

3 0
3 years ago
Solve for 9x-12=24!!!!!!!
dangina [55]

Answer:

<em>The value of x is 4. Hope this helps you.</em>

8 0
3 years ago
Read 2 more answers
Mathhh helppp meeee fast
Semmy [17]

the answer shoulldd be 136°

8 0
3 years ago
Read 2 more answers
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