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2 years ago

13 cm L 5 cm Calculate the perimeter

2 answers:

7 0

36 because in order to calculate it you have to plus the all together and for area you have to times two of them together

aksik [14]2 years ago

5 0

Answer:

Step-by-step explanation:

permeter is solved by doing length+length+width+width so therefore you would do 13+13+5+5 which equals 36 as your answer

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Question number 8. Prove that 3 + √5 is an irrational number.

Marina86 [1]

Answer :

Let's assume the opposite of the statement i.e., 3 + √5 is a rational number.

$\\ \sf \: 3 + \sqrt{5} = \frac{a}{b} \\ \\ \qquad \: \tiny \sf{(where \: \: a \: \: and \: \: b \: \: are \: \: integers \: \: and \: \: b \: \neq \: 0)} \\$

$\\ \sf \: \sqrt{5} = \frac{a}{b} - 3 = \frac{a - 3b}{b} \\$

Since, a, b and 3 are integers. So,

$\\ \sf \: \frac{p - 3b}{b} \\ \\ \qquad \tiny \sf{ \: (is \: \: a \: \: rational \: \: number \:) } \\$

Here, it contradicts that √5 is an irrational number.

because of the wrong assumption that 3 + √5 is a rational number.

$\\$

Hence, 3 + √5 is an irrational number.

7 0

3 years ago

What is the area of the surface cone rounded to the nearest tenth?

EleoNora [17]

Answer:

A = 422.4

i promise it's right :)

4 0

2 years ago

What is one way of writing 10-3?

Grace [21]

Greetings!

"10-3" can also be written as:
1) -3+10
2)10+(-3)

Hope this helps.
-Benjamin

4 0

2 years ago

Read 2 more answers

What is the simplified form of the expression?

RSB [31]

The 404 wasnt found... private message me and ill help you out<span />

8 0

2 years ago

How do you turn this equation into y=Mx+b form?

lana66690 [7]

Answer:

y= -4x + 54

Step-by-step explanation:

4x + y =54

-4x -4x

y = -4x +54

3 0

2 years ago