3 years ago

How can you find the measure of one angle in each regular polygon?

1 answer:

5 0

Polygons have interior, exterior and central angles.
This page explains how to calculate them: http://www.1728.org/polygon.htm

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Can somebody help me. i don't know if these are right or wrong. If they're wrong can you please correct me? appreciate it

notsponge [240]

Step-by-step explanation:

it is right

all are right

3 0

3 years ago

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September 6 is a Read Book Day.Polina read 5 times as many pages as Marcus read.Together,the read 108 pages.How many pages did e

Gemiola [76]

Answer:

The number of pages that Polina read was 90 and the number of pages that Marcus read was 18

Step-by-step explanation:

Let

x -----> number of pages that Polina read

y ----> number of pages that Marcus read

we know that

x+y=108 ----> equation A

x=5y -----> equation B

substitute equation B in equation A and solve for y

$5y+y=108\\6y=108\\y=18$

Find the value of x

$x=5y -----> x=5(18)=90$

therefore

The number of pages that Polina read was 90 and the number of pages that Marcus read was 18

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3 years ago

Write a 3-digit number that is divisible by both 3 and 4. Explain how you know this number is divisible by 3 and 4.

Alexeev081 [22]

Answer:

let us assume the 3 digit number be 984

To check weather the number is divisible by 3 and 4 then when should know the divisibility rule of 3 and 4.

A number is said to be divisible by 3 when the sum of each digit of the number is divisible by 3. Example 9+8+4 = 21 is divisible by 3 hence the number is divisible by 3.

A number is said to be divisible by 4 when the last two digit is divisible by 4 like 84 is divisible by 4 hence 984 is divisible by 4.

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3 years ago

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H. Salaries of Ravi and Sumit are in the ratio 2 : 3. If the salary of each is increased by Rs. 4000, the new ratio becomes 40 :

frutty [35]

Answer:

so here is the answer hope it helps

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3 years ago

Hailey got a grade of 93 on her last math test. However, because she turned it in late her teacher deducted 15 points. What will

igomit [66]

Answer:

i believe 78

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3 years ago