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Firdavs [7]
2 years ago
7

Please help me with this question....

Mathematics
1 answer:
AVprozaik [17]2 years ago
7 0

Answer:

63.63 {m}^{2}

Step-by-step explanation:

area \:  = \pi {r}^{2}  \\  = 3.142(4.5) {}^{2}  \\ = 63.63m {}^{2}

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Oxford currently generates 45,000 tons of garbage per year. but the city is launching some recycling initiatives to bring that n
barxatty [35]

Answer:

-Exponential Decay

-Decay factor is (1-0.05)

Step-by-step explanation:

-Given that the number decreases by a defined rate each year from the initial size by 5%,

-This is an exponential decay function of the form:

y=Ae^{-rt}

Where:

y is the quantity/size after time t

A is the initial size

r is the rate of decay

-Our function can the be written as

y=45000e^{-0.05t}

Hence, the decay rate/factor is 0.05

#Alternatively

The exponential decay can be of the form:

y=ab^x

Where:

y is the size at time x, a is the initial size, x is time and b is the decay factor.

b is of the form b=(1-r),\ \  r=decay\  rate

y=ab^x\\\\y=45000(1-0.05)^x

Hence, the decay factor is (1-0.05)

8 0
2 years ago
Determine whether it’s always, never, or sometimes true. <br> I put never true. Is that right?
DiKsa [7]

Answer:

yes the answer is never true

Step-by-step explanation:

as the correct answer is

\sqrt{2x}

4 0
3 years ago
ANYBODY? EASY MATH!
ad-work [718]
Well per dozen they are making 8$ per dozen cupcakes, and 7$ per dozen brownies

7 0
3 years ago
Are two cubes always similar
Ann [662]
Yes, because similar means same shape same angles different size!!
3 0
3 years ago
Simplify this problem
andrey2020 [161]

Answer:

-22 1/2

Step-by-step explanation:

-2 1/2 *s

Let s = 9

-2 1/2 (9)

Change to an improper fraction

-5/2 *9

-45/2

Change back to a mixed number

-22 1/2

8 0
3 years ago
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