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stealth61 [152]
2 years ago
8

What is the exact circumference of a circle with a diameter of 18cm? *

Mathematics
1 answer:
Delvig [45]2 years ago
3 0
9pi trust me is the answer
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HELP ME PLEASE!!! I DON'T UNDERSTAND!
Rama09 [41]

Answer: 12

Step-by-step explanation:

this is a right angled triangle so you use the pythagorean theory

which is a^2 + b^2 = c^2

you have c and b already. c is the hypotenuse.

a^2 + 16^2 = 20^2

a^2 + 256 = 400

a^2 = 400 - 256

a^2 = 144

then you square root 144 and get..

a = 12

3 0
3 years ago
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How do you write the algebraic notation when the scale factor is 3 ​
Alja [10]

Answer:

(x,y) = (3x,3y)

Step-by-step explanation:

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3 years ago
#9 please help<br><br> I’ll give brainlylist in return
9966 [12]
Factored form: (-x-4) (x-6)
Standard form: y= −x^2 + 2x + 24
Zeros: -4, 6
5 0
3 years ago
I need answer please​
zhenek [66]

Answer:

We know that lines <em>l</em><em> </em>and <em>m</em><em> </em>are parallel. The alternate interior angles rule states that the alternate interior angles formed by parallel lines are equal. So let's equate them.

2x + 22 = 4x

putting variables on one side,

22 = 4x - 2x

Thus 2x = 22

x becomes 22÷2

Therefore,<u> x = 11.</u>

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3 years ago
Michael has 5 boxes. There are 5kg of apples in each box. When empty, a box weighs 5-2 kg.
Sphinxa [80]
As I understand from the given above, each box when empty weighs 5-2 kg or 3 kg. To determine the total weight of Michael's boxes when empty, we just have to multiply 3 kg by 5. This gives us an answer of 15 kg. Thus, the total mass of Michael's boxes is 15 kg. 
3 0
3 years ago
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