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iragen [17]
3 years ago
6

Which expression is equivalent to 20 + 64

Mathematics
2 answers:
olga2289 [7]3 years ago
7 0
20+64=84    40+44=84       74+10=84           30+54=84 
          
dedylja [7]3 years ago
4 0
Anything that equals 84 would be correct
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What is 1/2 divided by 3 i got my Awncer but it says I got it wrong:(​
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Answer: A.

Step-by-step explanation:

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3 years ago
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For f(x) = 4x+ 1 and g(x) = x2 - 5, find (f+ g)(x).
horrorfan [7]

Answer:

x^2+4x-4

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A box with a square base and open top must have a volume of 32,000 cm3. find the dimensions of the box that mini- mize the amoun
zmey [24]
Alrighty


squaer base so length=width, nice


v=lwh
but in this case, l=w, so replace l with w
V=w²h

and volume is 32000
32000=w²h


the amount of materials is the surface area
note that there is no top
so
SA=LW+2H(L+W)
L=W so
SA=W²+2H(2W)
SA=W²+4HW

alrighty

we gots
SA=W²+4HW and
32000=W²H

we want to minimize the square foottage
get rid of one of the variables
32000=W²H
solve for H
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subsitute

SA=W²+4WH
SA=W²+4W(32000/W²)
SA=W²+128000/W

take derivitive to find the minimum
dSA/dW=2W-128000/W²
where does it equal 0?

0=2W-1280000/W²
128000/W²=2W
128000=2W³
64000=W³
40=W

so sub back
32000/W²=H
32000/(40)²=H
32000/(1600)=H
20=H

the box is 20cm height and the width and length are 40cm
7 0
3 years ago
If the #2 pencil is the most popular, why’s it still #2?
JulsSmile [24]
Never thought of that
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3 years ago
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