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IceJOKER [234]
3 years ago
13

A hummingbird may flap its wings anywhere from 64,800 to 280,800 times in an hour. Find the difference between the larger and sm

aller number. Then, round the answer to the nearest ten thousands place.
Mathematics
1 answer:
shutvik [7]3 years ago
6 0
280,800 - 64,800 = 216,000

Rounded = 
220, 000

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~~~30 POINTS!!!!! WILL CHOOSE BRAINLIEST ANSWER!!!! <3 <3<3<3~~~
NeTakaya
Ok assuming that when he buys the fabric, he cuts pieces off to make it fit, but doesn't sow them in other places to make up the lost area

so
first find the area of tablecloth he needs to buy
area=pir^2
diameter=32
d=2r
r=d/2
r=32/2=16
adds 5 inches extra
16+5=21
r=21
area of cloth=pi21^2
are of cloth=441pi
aprox pi=3.14
area=441 tmes 3.14
area=1384.74


buys cloth with width of 50 and legnth of x
so we need 2 things
1. area of cloth bought>area of tablecloth
2. legnth &width must both be greater or equal to the diameter of the tablecloth (so we can make a circle fit)

new diameter=32+5+5=42 (2 sides)
so
l and w must both be greater than or equal to 42
 
50l>1384.74
divide both sides by 50 to find legnth
l>27.6948
but the legnth must be also greater than or equal to 42
so make l=42 for min legnth
area of cloth bought=lw=42 by 50=42 times 50=2100

so we do

area wasted=area bought-area needed
area needed=area of tablecloth=1384.74
area bought=2100
area wasted=2100-1384.74
area wasted=715.26 in^2


answer is wasted area=715.26 square inches




4 0
3 years ago
Dennis collected a total of 1712 stamps over the past 16 years At this rate how many stamps would he collect in 21 years
Marat540 [252]

2,247

Step-by-step explanation:

you take 1712 and divide that by 16 which is 107 and then you multiply 107 by 21 thus you get 2,247.

4 0
3 years ago
6.
sladkih [1.3K]

Answer:

\frac{1}{5}

Step-by-step explanation:d=-1\frac{1}{5}-(-2) =-1\frac{1}{5}+2=\frac{1}{5}

7 0
3 years ago
I need help with this
omeli [17]

sorry i don't know this one wish i could help

7 0
3 years ago
The students at George's school recently raised money to help the victims of the hurricane in Puerto Rico. George's sixth grade
Nikitich [7]

Answer:

the answer would be 1060

Step-by-step explanation:

all you have to do is multiply 260 by four and then you have your answer

5 0
3 years ago
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