3 years ago

What is the number of 20% of 40

Mathematics

1 answer:

mote1985 [20]3 years ago

3 0

Answer:

Step-by-step explanation:

40 x 0.20

= 8

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Subtract and reduce to lowest terms: 4 - 5/8

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Answer: 3 3/8

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A football player lost 10 yards when he was tackled. a 10 b -10

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A bucket of paint has spilled on a tile floor. The paint flow can be expressed with the function p(t) = 6t, where t represents t

Neko [114]

Answer:

A) A[p(t)] = 36πt²

B) 7234.56 square units

Step-by-step explanation:

Given functions:

$\begin{cases}p(t)=6t \\ A(p)=\pi p^2 \end{cases}$

Part A

To find the area of the circle of spilled paint as a function of time, substitute the function p(t) into the given function A(p):

$\begin{aligned}A(p) & = \pi p^2\\\\ \implies A[p(t)] & = \pi [p(t)]^2\\& = \pi (6t)^2\\& = \pi 6^2 t^2\\& = 36\pi t^2\end{aligned}$

Part B

Given

t = 8 minutes
π = 3.14

Substitute the given values into the equation for A[p(t)} found in part A:

$\begin{aligned}A[p(8)] & = 36\pi t^2\\& = 36 \cdot 3.14 \cdot 8^2\\& = 36 \cdot 3.14 \cdot 64\\& = 113.04 \cdot 64\\& = 7234.56\:\: \sf square\:units\end{aligned}$

Therefore, the area of spilled paint after 8 minutes if 7234.56 square units.

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Lesechka [4]

Answer:

x = 30

Step-by-step explanation:

A triangle's angles add up to 180

Also, angles on a straight line add up to 180

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3 years ago

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3249 <img src="https://tex.z-dn.net/?f=3249%20%5Ctimes%2022" id="TexFormula1" title="3249 \times 22" alt="3249 \times 22" ali

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What is the number of 20% of 40￼

What is the number of 20% of 40