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Iteru [2.4K]
3 years ago
13

Write as a decimal: 31%

Mathematics
1 answer:
algol [13]3 years ago
3 0

Answer: 0.31 is the decimal form of 31%

Step-by-step explanation:

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Given f(x)=7(9−x)−4, what is the value of f(−1) ?<br><br> Enter the answer in the box.
NeX [460]

Solution:

f(x) = 7(9 - x) - 4

f(-1) = 7(9 - (-1)) - 4

f(-1) = 7(10) - 4

f(-1) = 70 - 4

f(-1) = 66

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Eduardwww [97]

Answer:

y = 2x

Step-by-step explanation:

Given y is directly proportional to x then the equation relating them is

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3 years ago
A cone has a radius of 10 cm and and height of 9 cm. What is the approximate volume of the cone? Use 3.14 for π.
astraxan [27]

Answer:

The volume of the cone is 942cm^3

Step-by-step explanation:

The given cone has a radius of 10 cm and and height of 9 cm.

The volume of a cone is given by:

V=\frac{\pi r^2h}{3}

We substitute r=10 and h=9 ,  \pi=3.14 to obtain:

V=\frac{3.14*10^2*9}{3}

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V=\frac{3.14*100*9}{3}

Simplify:

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Therefore the volume of the cone is 942cm^3

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Step-by-step explanation:

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