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Tamiku [17]
3 years ago
14

Farmer Ellie has another circular field for crops. This one has a diameter of 35 meters. What is the area of the field?

Mathematics
1 answer:
slava [35]3 years ago
3 0

Area of a circle = pi × r^2.

r = radius.

Diameter / 2 = radius

35 / 2 = 17.5m

Plug this value into our area formula.

A = pi(17.5)^2

A = 962.11

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ElenaW [278]
First term: a1 = 151
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nth term of this arithmetic sequence is...
an = a1+d(n-1)
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This will be used in the formula below

Sn = n*(a1+an)/2
<span>Sn = n*(151+(-14n+165))/2
</span><span>S26 = 26*(151+(-14*26+165))/2 ... replace every n with 26
</span>S26 = -624

The final answer here is choice C) -624
<span>
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Jobisdone [24]

The question is:

Check whether the function:

y = [cos(2x)]/x

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Answer:

To check if the function y = [cos(2x)]/x is a solution of the differential equation xy' + y = -2sin(2x), we need to substitute the value of y and the value of the derivative of y on the left hand side of the differential equation and see if we obtain the right hand side of the equation.

Let us do that.

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Now,

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Which is the right hand side of the differential equation.

Hence, y is a solution to the differential equation.

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Have a lovely day! <3
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