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fiasKO [112]
3 years ago
14

Ig u could say free points. just answer this. and happy birthday to those like me in april. this picture is us

Mathematics
2 answers:
Kamila [148]3 years ago
8 0

Answer:

The answer is 405

Step-by-step explanation:

kotykmax [81]3 years ago
3 0

The answer is 405

Explanation Hope yall have a  great day

                                     

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A meal cost $18.50 at a restaurant, including the 9% tax and the 20% tip.
OverLord2011 [107]
The original price of the meal was $13.47 because 20% of 18.50 is 3.7 you subtract it from 18.50 and then you get 14.8 then you do 9% of 14.8 and get 1.332 and subtract that from 14.8 and get 13.468 and round to the nearest hundred.
6 0
3 years ago
A population of insects increases at a rate 230 + 8t + 0.9t2 insects per day (t in days). Find the insect population after 6 day
____ [38]

Answer:

The insect population after 6 days is of 1639 insects.

Step-by-step explanation:

A population of insects increases at a rate 230 + 8t + 0.9t2 insects per day

This means that r(t) = 230 + 8t + 0.9t^2

The population of insects after x days is given by:

P(t) = \int_{0}^{x}r(t)dt

So

P(x) = \int_{0}^{x} (230 + 8t + 0.9t^2)

P(x) = 230t + 4t^2 + 0.3t^3 + K|_{0}^{x}

P(x) = 230x + 4x^2 + 0.3x^3 + K

In which K is the initital population(which is 50). So

P(x) = 230x + 4x^2 + 0.3x^3 + 50

After 6 days:

P(6) = 230*6 + 4*6^2 + 0.3*6^3 + 50 = 1638.8

Rounding to the nearest insect, 1639

The insect population after 6 days is of 1639 insects.

7 0
3 years ago
What is the exact circumference of a circle with a radius of 15 cm?
Alex777 [14]

Answer:

C:30π cm  

Step-by-step explanation:

The formula for the circumference of a circle is

C = 2πr

Since the radius is 15 cm, this makes 2r = 2(15) = 30 cm.  This makes the circumference

C = 30π cm

7 0
3 years ago
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Find the value of y.
Kaylis [27]

Answer: 4.3

Step-by-step explanation:

11x2=22

22/3= 7.3

7.3-3= 4.3

4 0
3 years ago
What does a skew line look like
Yanka [14]
They are lines or planes that do not intersect.
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3 years ago
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