3 years ago

The measure of angle 1 is 30°, and the measure of angle 2 is 110°. na ofanale 12

Mathematics

1 answer:

LenaWriter [7]3 years ago

3 0

40 is the answer if your asking for the second angle

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When a class took a math test, 15% of the class failed, 25% made some mistakes (but didn’t fail), and 24 students got perfect sc

mart [117]

Answer:

There are 40 students in the class.

Step-by-step explanation:

We are given the following in the question:

Percentage of class that failed = 15%

Percentage of class that made mistakes but did not fail = 25%

Number of students that got perfect score = 24

Percentage of students that got perfect score =

$100\%-\text{Percentage of class that failed}-\text{Percentage of class that made mistakes but did not fail}\\= 100\%-15\%-25\%\\= 60\%$

Let x be the total number of students in the class.

Then, we can write:

$60\% \text{ of } x = 24\\60\% \times x = 24\\\\\displaystyle\frac{60}{100}\times x = 24\\\\x = 24\times \frac{100}{60}\\\\x = 40$

Thus, there are 40 students in the class.

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3 years ago

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2/5 + a/2 = 4/5 + 2a

marin [14]

Answer:

a= -4/15

Step-by-step explanation:

Step one: 4+5a=8+20a

Step two: 5a-20a=8-4

Step three: -15a=4 then divide both sides by 15 to get your answer :)

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3 years ago

I Need Number 4 &' 6

adoni [48]

4 is again c because you should put the 2 here 2a'2-1 so this is 2a'1 and this is 20 so
A2 is 20
Than you should again do this and find a3 ...

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3 years ago

A 1 digit number and a 3 digit number have a sum of 205. The same two number have a difference of 195, a product of 1,000 and a

blagie [28]

It is 200 and 5.that is the answer

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3 years ago

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Fill in the blanks(science)

mamaluj [8]

Here you go!! these are all the ones i know, sorry but i hope you get a A+

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2 years ago