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3 years ago

For which polygon is the sum of the interior angles equals to 720

Mathematics

1 answer:

Ugo [173]3 years ago

5 0

Answer:

Hexagon

Step-by-step explanation:

180°(n-2)

180°(6sides-2)

180°(4)

720°

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Which set of coordinates represents Figure MNOP reflected across the x-axis?

Dima020 [189]

Answer: 556

Explanation: because coordination of understanding the union is not important for understanding and the circumstances surrounding the revolution and that it will not take a long way tatty the revolution of a primary source carefully to understand what is important for understanding and the union is not a good source for understanding the revolution of a primary source carefully

7 0

3 years ago

−6−1.5(4b+8)=3(−6−2b)

____ [38]

Answer:

-18 = -18 It is true.

Step-by-step explanation:

-6 -1.5(4b+8) = 3(-6 -2b)

-6 -6b - 12 = -18 -6b

-6b -18 = -18 -6b

+6b +6b

-18 = -18

It is true.

4 0

3 years ago

John took all his money from his savings account. He spent $110 on a radio and 4/11 of what was left on presents for his friend

svp [43]

Answer:

$1210

Step-by-step explanation:

Let x be total amount

First John spent $110 on a radio and 4/11 of what was left on presents for his friends so he was left with

$\frac{7}{11}(x-110)=\frac{7}{11}x-70$

Then he put 2/5 of his remaining money into a checking account

$\frac{3}{5}\left(\frac{7}{11}x-70\right)$

Rest he donated to charity

$420=\frac{3}{5}\left(\frac{7}{11}x-70\right)\\\Rightarrow \left(\frac{7}{11}x-70\right)=\frac{2100}{3}\\\Rightarrow \frac{7}{11}x-70=700\\\Rightarrow \frac{7}{11}x=770\\\Rightarrow x=1210$

Hence total amount of money John originally had was $1210

8 0

2 years ago

Is 7x=5x-25+30 no solution,one solution, or all real numbers? Thank you!

viva [34]

One solution let's find that

$\\ \rm\hookrightarrow 7x=5x-25+30$

$\\ \rm\hookrightarrow 7x=5x+5$

$\\ \rm\hookrightarrow 2x=5$

$\\ \rm\hookrightarrow x=5/2$

6 0

2 years ago

The length of each side of a regular pentagon is increased by 8 inches, so the perimeter is now 65 inches. What is the original

evablogger [386]

Here as the Pentagon is regular so it's all sides will be of equal length . And if we assume It's each side be s , then it's perimeter is going to be (s+s+s+s+s) = 5s.And as here , each side is increased by 8 inches and then it's perimeter is 65 inches , so we got that it's side after increament is (s+8) inches and original length is s inches . And if it's each side is (s+8) inches , so it's perimeter will be 5(s+8) and as it's equal to 65 inches . So , 5(s+8) = 65