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4 years ago

mr yosgi has 75 papers he graded 60 of them and let a student grade the rest what percent if the papers did each person grade?

Mathematics

1 answer:

Alika [10]4 years ago

6 0

He graded 60/75 papers.

If you divide these numbers instead of trying to simplify it equals the decimal 0.8.

If you move the decimal point two places to the right it's 80%.

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Simplify the expression ?

melomori [17]

Answer:

The answer is cscx(cscx - 1) ⇒ the second answer

Step-by-step explanation:

∵ csc²x = cot²x + 1

∴ $\frac{cot^{2}x+1-1 }{1+sinx}=\frac{cot^{2}x }{1+sinx}$

Multiply the fraction by its conjugate 1 - sinx (up and down)

∴ $\frac{cot^{2}x }{1+sinx}*\frac{1-sinx}{1-sinx}=\frac{cot^{2}x(1-sinx) }{1-sin^{2}x}$

∵ 1 - sin²x = cox²x

∴ $\frac{cot^{2}x(1-sinx) }{cos^{2}x }$

∵ cot²x = cos²x/sin²x

∴ $\frac{1-sinx}{sin^{x}}=\frac{1}{sin^{2}x}-\frac{sinx}{sin^{2}x}=csc^{2}x-cscx$

Take cscx as a common factor

∴ cscx(cscx - 1)

7 0

3 years ago

1. Decide if the following is a properly formed syllogism. If you are going to wrap Holly’s gift, you need wrapping paper. If yo

goblinko [34]

This is not a syllogism. Hence option B is correct.

<h3>What is a syllogism?</h3>

A logical structure for a formal argument that includes a major, minor, and conclusion.

This syllogism cannot be concluded without a given statement.

You'll need wrapping paper if you're going to wrap Holly's present. To get wrapping paper, you must visit a store.

Therefore, you will wrap Holly's present if you visit the store. This isn't a syllogism

Hence option B is correct.

To learn more about the syllogism refer to;

brainly.com/question/21635821

#SPJ1

8 0

2 years ago

A triangle has side lengths 32, 45 and 18. What type of triangle is it?

sergejj [24]

Answer:

Part A) Option C. obtuse

Part B) Option B. acute

Step-by-step explanation:

we know that

Applying the Pythagoras Theorem

if $c^{2}=a^{2}+b^{2}$ ----> is a right triangle

if $c^{2}>a^{2}+b^{2}$ ----> is an obtuse triangle

if $c^{2}$ ----> is an acute triangle

where

c is the greater side

Part A) A triangle has side lengths 32, 45 and 18. What type of triangle is it?

we have

$c^{2}=45^{2}=2,025$

$a^{2}+b^{2}=32^{2}+18^{2}=1,348$

therefore

$c^{2}>a^{2}+b^{2}$

Is an obtuse triangle

Part B) A triangle has side lengths 44, 36 and 30. What type of triangle is it?

we have

$c^{2}=44^{2}=1,936$

$a^{2}+b^{2}=36^{2}+30^{2}=2,196$

therefore

$c^{2}< a^{2}+b^{2}$

Is an acute triangle

8 0

3 years ago

What is 20% of 55? (show work)

SCORPION-xisa [38]

I know that 20% is out of 100.If I changed this problem to be a fraction problem,I would change that percent to 20/100.55 would be the denominater of the other fraction.Right now we're trying to find the numerator for the denominator of 55 to make this a complete fraction.Secondly,I would try to find a common denominator to get my answer.I'm going to make the common denominator......5500.As my teacher always said what you do to the bottom you do to the top and it goes the other way around too.So, i will times 20*55 to get my numerator.This equals 1100.Now I would divide this fraction by 100 to get my finished answer.The answer is 11 is 20% of 50.

4 0

3 years ago

Need help with number 5

Nitella [24]

Answer:

Step-by-step explanation:

because there are 2 sides of the wide sides and one of length so tou would subtract 82 from 164 and get 82 then divide 82 by 2 because you have two width ends so it would be 41.

6 0

3 years ago