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denis-greek [22]
3 years ago
7

During an exploratory activity, a student measured the diameter and circumference of several circular objects. She recorded her

data in the table below. What equation best represents this data?
y = 6.28x
y = 3.14x + 6.28
y = 3.14x
y = 6.28x + 3.14

Mathematics
2 answers:
Nostrana [21]3 years ago
7 0

Answer:

y=3.14x

Step-by-step explanation:

if you graph this on a calculator you can just visually see what line lines up with all the points. but you can also plug in one of the points into the equations to see if its true or not and if its true choose that equation. like use the first points (2, 6.28) and plug them into the equations and see which one is true.

Juli2301 [7.4K]3 years ago
7 0

I’m pretty sure it is the 3rd one

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andreev551 [17]
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4 0
3 years ago
Suppose m = 2 + 6i, and | m + n | = 3√10, where n is a complex number.
Ksju [112]

Answer: a) √50

b) n = 1 + 7i

Step-by-step explanation:

first, the modulus of a complex number z = a + bi is

IzI = √(a^2 + b^2)  

The fact that n is complex does not mean that n doesn't has a real part, so we must write our numbers as:

m = 2 + 6i

n = a  + bi

Im + nI = 3√10

Im + n I = √(a^2 + b^2 + 2^2 + 6^2)= 3√10

            = √(a^2 + b^2 + 40) = 3√10

             a^2 + b^2 + 40 = 3^2*10 = 9*10 = 90

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            √(a^2 + b^2 ) = InI = √50

The modulus of n must be equal to the square root of 50.

now we can find any values a and b such a^2 + b^2 = 50.

for example, a = 1 and b = 7

1^2 + 7^2 = 1 + 49  = 50

Then a possible value for n is:

n = 1 + 7i

6 0
3 years ago
Find an ordered pair , x y that is a solution to the equation.x-3y=6
a_sh-v [17]
Hi there!

Let x=1

X-3y=6
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Therefore a point would be (1, -5/3)

Hope this helps!
6 0
3 years ago
(17+4) + 9 = 17 + (4+9)
valina [46]
That's the associative property of addition

it is normally written as
(a+b)+c=a+(b+c)
which is like what you have
(17+4)+9=17+(4+9)
6 0
3 years ago
If cheese is $4.40 per kg, what should I pay for 200 g?
Ilya [14]

Answer:I don't know

Step-by-step explanation:

Sorry

7 0
2 years ago
Read 2 more answers
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