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photoshop1234 [79]
3 years ago
14

WILL GIVE BRAINLIEST ANSWER TO WHOEVER ANSWERS FIRST

Mathematics
1 answer:
NNADVOKAT [17]3 years ago
7 0

Answer:

C

Step-by-step explanation:

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All but B, as on B an a can be factored out
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At the beginning of a 10-hour experiment,a substance has an initial temperature of 19.7 degrees C. The substance is cooled at a
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-6.3

Step-by-step explanation:

2.6 * 10 (10 hours and 2.6 degrees) = 26

19.7 - 26 = -6.3



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I) Find the volume in terms of pie
SVETLANKA909090 [29]

Answer:

i) pi×4500 cm³

ii) pi×600 cm²

iii) 14 liters

Step-by-step explanation:

in general : the diameter is 30 cm, the radius is half of that (15 cm)

i)

the volume of a cylinder is base area times height.

Vc = pi×r²×h = pi×15²×20 = pi×225×20 = pi×4500 cm³

ii)

similar to volume, the side "mantle" area of the cylinder is the circumference of the base area times height.

surface area of the cylinder mantle is

Scm = 2×pi×r×h = 2×pi×15×20 = pi×30×20 = pi×600 cm²

iii)

for this we need now to do the multiplication with pi and then convert the cm³ to liters.

1 liter = a cube of 10 cm side length = 10×10×10 = 1000 cm³

pi×4500 = 14137.17 cm³ = 14.13717 liters or rounded 14 liters

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3 years ago
The dad has a son and a daughter. The daughter is 19 years younger than the son. The son is 13 years younger than the dad (Don't
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53

Step-by-step explanation:

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2 years ago
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