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dimaraw [331]
2 years ago
15

What value of f makes the equation true?

Mathematics
1 answer:
enyata [817]2 years ago
4 0

30.2 would be the answer because you'd have to use addition to move (-18.4) to the other side with 11.8 which would result in 30.2

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It would be 13 hours
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Explain why 4 x 2/5 is the same operation as 2/5 + 2/5 +2/5 + 2/5
wlad13 [49]

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Step-by-step explanation: Multiply both numerators and denominators. Result fraction keep to lowest possible denominator GCD(8, 5)=1. In the next intermediate step the fraction result cannot be further simplified by cancelling. In words - four multiplied by two fifths=eight fifths.

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A farmer is planting a straight row of crops with 3 feet between each plant. If 23 are planted, what is the distance between the
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A closed cylindrical can of fixed volume V has radius r.a) Find the surface area, S, as a function of r.b) What happens to the v
andrey2020 [161]

Answer:

Step-by-step explanation:

This question is incomplete; here is the complete question.

A closed cylindrical can of fixed volume V has radius r. (a) Find the surface area, S, as a function of r. (b) What happens to the value of S approaches to infinity? (c) Sketch a graph of S against r, if  V=10 cm³.

A closed cylindrical can of volume V is having radius r and height h.

a). Surface area of a cylinder is given by

S = 2(Area of the circular sides) + Lateral area of the can

S = 2πr² + 2πrh

S = 2πr(r + h)

b). Since surface area is directly proportional to radius of the can

S ∝ r

Therefore, when r approaches to infinity (r → ∞)

c). If V = 10 cm³ Then we have to graph S against r.

From the formula V = πr²h

10 = πr²h

h = \frac{10}{\pi r^{2}}

By placing the value of h in the formula of surface area,

S = 2\pi r(r+\frac{10}{\pi r^{2}})

Now we can get the points to plot the graph,

r       -2             -1         0       1            2

S    -13.72     -13.72     0    26.28    35.13

7 0
3 years ago
How do I prove this? Help Thanks.​
eimsori [14]

Answer:

Step-by-step explanation:

5 0
3 years ago
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