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3 years ago

13

Amanda Elementary School has 4 sixth grade classrooms. If each classroom can hold 30 kids, how many sixth graders can they hold

in all?

2 answers:

Diano4ka-milaya [45]3 years ago

7 0

Answer: There are 120 sixth graders.

Step-by-step explanation.

Just multiply 30 times 4

Lilit [14]3 years ago

6 0

Answer:

I'm not sure what you're trying to ask. Is there a total number of kids?

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3 years ago

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Jane needs to memorize words on a vocabulary list for Korean class. She has 18 words to memorize, and she is two-thirds done. Ho

alexgriva [62]

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3 0

3 years ago

When you have the number 81 as your median and you have to find the missing number out of the following 82,87,77,70,80,88

Natali5045456 [20]

Uh, so, you're median is 81 already.

Since the middle two numbers are 82 and 80, you have to add them together and then divide by 2.

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6 0

4 years ago

Orlov [11]

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4 0

3 years ago

If sin tetha=root3/2, what is cos tetha?

Minchanka [31]

Answer:

The value of cos Ф is ± $\frac{1}{2}$

Step-by-step explanation:

There are important rules for sin Ф and cos Ф

sin²Ф + cos²Ф = 1

sin²Ф = 1 - cos²Ф

cos²Ф = 1 - sin²Ф

∵ sin Ф = $\frac{\sqrt{3}}{2}$

∴ sin²Ф = $(\frac{\sqrt{3}}{2})^{2}$

∴ sin²Ф = $\frac{3}{4}$

→ By using the third rule above

∵ cos²Ф = 1 - sin²Ф

∴ cos²Ф = 1 - $\frac{3}{4}$

∴ cos²Ф = $\frac{1}{4}$

→ Take square root for both sides

∴ cos Ф = ± $\frac{1}{2}$

∴ The value of cos Ф is ± $\frac{1}{2}$

6 0

3 years ago