MATHEMATICS MIDDLE SCHOOL

X^2=3x+3 in standard form

Answers

Answer 1

Answer:

Answer:

x^2-3x-3=0

Step-by-step explanation:

x^2=3x+3

x^2-3x-3=0

440 square units

Step-by-step explanation:

We can find half of a side of the pentagon with the expression

$tan(36\°)=(s_(half) )/(11)$

Because, as a regular polygon, all its sectors have the same central angle, and the apothem divides equally each sector in two equal parts.

$s_(half) \approx 8$

Therefore, half of a side is 8 units long, which means each side measures 16 units.

Now, the area of a penthagon is defined by

$A=(p * a)/(2)$

Where $p$ is the perimeter and $a$ is the apothem. Where the perimeter is the sum of all sides, which is 80 units.

$A= (80 * 11)/(2) =440 \ u^(2)$

Therefore, the right answer is the second choice.

Help & what is pi×pi?

Answers

pi = 3.14

3.14 * 3.14 = 9.86

3.14x3.14=9.8596 pi= 3.14 so multiply it by itself

the price of a tv was originally 374.99 and reduced to 299.50. what was the percent decrease of the price of the tv round your answer to the nearest tenth

Answers

first you should say:
374.99 - 299.50 = 75.49
so now you should say:
75.49/374.99 = ?/100
so ? is the percent:
? = (75.49*100)/374.99 = 20.131 % :)))
i hope this is helpful
have a nice day

Answer: 20.13% decrease

Step-by-step explanation:

First, you should do: 374.99 - 299.50 = 75.49

After that, you should divided 75.49 by 374.99 =

(75.49 x 100)/374.99 = 20.131%

Use Order of Operations to simplify. 42 – (28 ÷ 7) + 111