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Finger [1]
3 years ago
11

A square has an area of 9 cm What is its side length? I got 3

Mathematics
2 answers:
storchak [24]3 years ago
5 0

Answer:

3cm.  area = L x W If the area is 9 we know 3x3 = 9 and squares side length are the same so 3x3= 9cm!

Step-by-step explanation:

Zina [86]3 years ago
3 0

Answer:

you're right it is 3 cause a squares sides are all equal and the only number that can multiply by itself to get 9 is 3.

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Simplify the trigonometric expression sin(4x)+2 sin(2x) using Double-Angle
drek231 [11]

Answer:

{ \bf{ =  \sin(4x)  + 2 \sin(2x) }} \\  = { \bf{2 \sin(2x) \cos(2x)   + 4 \sin(x)  \cos(x) }} \\  { \bf{ = 4 \sin(x) \cos(x) . ({ \cos }^{2}  x -  { \sin}^{2} }x) + 4 \sin(x) \cos(x)  }  \\  = { \bf{4 \sin(x) \cos(x)  ( { \cos }^{2}x -  { \sin }^{2}x + 1)  }} \\  = { \bf{4 \sin(x) \cos(x)  }(2 { \cos }^{2} x)} \\  = { \bf{8 \sin(x)  { \cos}^{3}x }}

8 0
3 years ago
Can please help!
sukhopar [10]
Answer:
equation is: width = area / length
width = 62.5 yd

Explanation:
For the first rectangle:
We have:
length = 75 yd and width = 60 yd
Therefore:
area = length * width 
area = 75 * 60
area = 4500 yd²

For the second rectangle:
We have:
area = area of first rectangle = 4500 yd²
length = 72 yd
area = length * width
width = area / length ............> The required equation
width = 4500 / 72
width = 62.5 yd

Hope this helps :)
5 0
3 years ago
Percent change from 100 to 160​
Oxana [17]

Answer:

60%

Step-by-step explanation:

100 is the entire thing and if you convert it into a percentage it is 100%. But the difference between 100% to 160% is 60%.

7 0
3 years ago
F(x)=4x2+6 what is the answer
Tanya [424]
The answer is 14 even
3 0
3 years ago
Can 3 and 3/5 also be rewritten as 3 and 15/20?
mario62 [17]
No,because your supposed to multiply it by the same number.
7 0
3 years ago
Read 2 more answers
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