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Law Incorporation [45]
3 years ago
15

Anna earned 22 points on her last test. If there were 40 possible points, what was her percent grade?

Mathematics
1 answer:
dimulka [17.4K]3 years ago
6 0

Answer:

55%

Step-by-step explanation:

Since Anna earned 22 points, and there was a total of 40 points, this means that she scored 22 out of 40 points. You can simplify this by dividing the denominator and numerator by 2. Then, you can multiply both the numerator and denominator by 5 to get a number out of 100.

\frac{22}{40} = \frac{11}{20}=\frac{55}{100}*100%=55%

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barxatty [35]

Answer:

see explanation

Step-by-step explanation:

Using the identity

cosecx = \frac{1}{sinx} and the exact values

cos45° = \frac{\sqrt{2} }{2}, sin30° = \frac{1}{2}

Given

cos45° × sin30° + cosec30°

= \frac{\sqrt{2} }{2} × \frac{1}{2} + \frac{1}{\frac{1}{2} }

= \frac{\sqrt{2} }{4} + 2

= \frac{\sqrt{2} }{4} + \frac{8}{4}

= \frac{1}{4}(\sqrt{2} + 8 ) ← exact value

≈2.354 ( 3 dec. places )

7 0
3 years ago
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Gemiola [76]
AB = 56 because the bigger triangle is 2 times the smaller one.
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3 years ago
A bus leaves Dhaka on Saturday night and is supposed to arrive at Cox’s Bazar at 08 17
guajiro [1.7K]

Answer:

9:34 pm

Step-by-step explanation:

First:

8:17 am

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8:17 pm

Round to 8:20

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Answer:

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babunello [35]

Answer:

This proof can be done by contradiction.

Let us assume that 2 - √2 is rational number.

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Since, a and b are integers 2 - \dfrac{a}{b} is also rational.

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This contradicts the fact that √2 is irrational number.

Hence our assumption that 2 - √2 is rational number is false.

Therefore, 2 - √2 is irrational number.

3 0
3 years ago
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