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andrew11 [14]
3 years ago
9

PLS HELPPPPPPPPPPPPPPPPPPPPPPP

Mathematics
1 answer:
frosja888 [35]3 years ago
8 0
You would use the semicircle formula which is 1/2(pi)r^2, plug it in, the answer would be 8(pi)
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The savings in a bank account can be modeled using S = 1250e^0.45t, where t is the number of years the
morpeh [17]

Using the given exponential function, it is found that it will take 1.5 years for the  amount of savings to double from the initial amount deposited of $1250.

<h3>Exponential function:</h3>

The <em>exponential function</em> that models the savings in the bank account is given by:

S(t) = 1250e^{0.45t}

  • In which t is the time in years that the money has been in the account.

The time to double from the initial amount deposited of $1250 is t for which S(t) = 2(1250) = 2500, hence:

S(t) = 1250e^{0.45t}

2500 = 1250e^{0.45t}

e^{0.45t} = \frac{2500}{1250}

e^{0.45t} = 2

\ln{e^{0.45t}} = \ln{2}

0.45t = \ln{2}

t = \frac{\ln{2}}{0.45}

t = 1.5

It will take 1.5 years for the  amount of savings to double from the initial amount deposited of $1250.

To learn more about exponential functions, you can take a look at brainly.com/question/14855561

8 0
3 years ago
How do you solve [x^2(2x+3)]^3 ?
Bond [772]

Answer:

here's the steps

Step-by-step explanation:

first of the numbers inside the [ ] is always positive.Now since the 3 is outside the [ ] you use it like a tool and don't change it, so nothing happen to it.since ^3 is missing a base (variable, cannot remember exact name) but is not missing ^3, which make them alike enough to multiply because 3 is outside of () nut the ^3 will stay the same (don't know why but that's how math works)

8 0
3 years ago
A truck can be rented from company A for $100 a day plus $0.20 per mile. Company b charges $80 a day plus $0.30 per mile to rent
Fittoniya [83]

Answer:

2000

Step-by-step explanation:

A(m) = 100 + 0.20m

B(m) = 80 + 0.3m

---------------------------

For company A to have a better deal, the truck must be driven more than __ miles per day.

Solve::

100 + 0.2m < 80 + 0.3m

-------

20 < 0.1m

m > 2000/1 = 2000 miles

---------------

2500 mi

4 0
3 years ago
The point (-1,4)is translated five units right and three units down.which rule describes the translation
xz_007 [3.2K]

Answer:

(x, y ) → (x + 5, y - 3 )

Step-by-step explanation:

5 units right means add 5 to the x- coordinate

3 units down means subtract 3 from the y- coordinate

the translation rule is

(x, y ) → (x + 5, y - 3 )

5 0
3 years ago
Find the center of a circle with the equation: x^2 + y^2 - 2y - 8x - 19 = 0
777dan777 [17]

Answer:

(4, 1)

Step-by-step explanation:

x^2 + y^2 - 2y - 8x - 19 = 0

We rearrange the terms and complete the square twice.

x^2 - 8x + y^2 - 2y = 19

x^2 - 8x + 16 + y^2 - 2y + 1 = 19 + 16 + 1

(x - 4)^2 + (y - 1)^2 = 6^2

The center is (4, 1)

3 0
3 years ago
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