Answer:
Step-by-step explanation:
this isn’t an answer but did u did the answer to this because i need it. thanks
Answer:
Step-by-step explanation:
item 4 Find the perimeter of the window. Round your answer to the nearest tenth. 90 cm
You did not state the diameter or radius of the window
so, i will use 90cm as the diameter of the window
First, I'd calculate the half circumference of the window.
The formula for circumference is
,
Half of it would just be 
Since our diameter is 90 cm, our radius is 45 cm.
Circumference =

circumference is also the same with perimeter
<h3>so, the answer is 141.37cm</h3><h3>to nearest tenth = 141.4cm</h3>
To calculate what is asked we use the formula for radioactive decay. It is expressed as follows:
An = Ao (e^(-kt))
We calculate as follows:
An = Ao (e^(-kt))
74 = 100 (e^(-k(10)))
k = 0.0301
1/2 = (e^(-0.0301t))
t = 23 hours
Hope this answers the question.
Following numbers are greater than or equal to -12:
-12
-11
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
And so on..................
(Brainiest please!!!!!)