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lilavasa [31]
3 years ago
11

Find the area of a circle with a diameter of 2

Mathematics
2 answers:
Sophie [7]3 years ago
6 0

Answer:

22/7

Step-by-step explanation:

d=2

i.e r=d/2=1

then area of circle=πr^2

=22/7 *1

=22/7 i.e 3.1415

dlinn [17]3 years ago
6 0

Answer:

Area: 3.14

Step-by-step explanation:

The diameter of the circle is 2.

We need to find the radius and to find it, we need to divide the diameter by 2 (since that's the formula)

2/2

/ = divided

radius: 1

The formula of an area of a circle is:

A: π r²

pi times the radius basically

Pi: 3.14

3.14 * 1 = 3.14

* = multiply

So the area of the circle is 3.14.

Hope this helped :)

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A random sample of of 100 voters in a town is selected, and 24 are found to support an annexation suit. Find the 96% confidence
lbvjy [14]

Answer: 0.24 +/- 0.088 = (0.152, 0.328)

Step-by-step explanation:

The point estimate p is given by;

p= 24/ 100 = 0.24

Z value for 96% confidence interval is 2.05

The solution for the given confidence interval is derived using the equation

p +/- z√(pq/n)

Where p = 0.24 q= 1-p = 0.76, n=100 z= 2.05

= 0.24 +/- 2.05√(0.24×0.76/100)

= 0.24 +/- 2.05(0.0427)

=0.24 +/- 0.088

= ( 0.152, 0.328)

6 0
4 years ago
Which equation has no solution?
kherson [118]
A because absolute values are always more than or equal to 0
7 0
3 years ago
Plz prove this for me.....
s344n2d4d5 [400]

I've answered your other question as well.

Step-by-step explanation:

Since the identity is true whether the angle x is measured in degrees, radians, gradians (indeed, anything else you care to concoct), I’ll omit the ‘degrees’ sign.

Using the binomial theorem, (a+b)3=a3+3a2b+3ab2+b3

⇒a3+b3=(a+b)3−3a2b−3ab2=(a+b)3−3(a+b)ab

Substituting a=sin2(x) and b=cos2(x), we have:

sin6(x)+cos6(x)=(sin2(x)+cos2(x))3−3(sin2(x)+cos2(x))sin2(x)cos2(x)

Using the trigonometric identity cos2(x)+sin2(x)=1, your expression simplifies to:

sin6(x)+cos6(x)=1−3sin2(x)cos2(x)

From the double angle formula for the sine function, sin(2x)=2sin(x)cos(x)⇒sin(x)cos(x)=0.5sin(2x)

Meaning the expression can be rewritten as:

sin6(x)+cos6(x)=1−0.75sin2(2x)=1−34sin2(2x)

3 0
3 years ago
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Olin [163]

Answer:

3

Step-by-step explanation:

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4(x+1)/4 = 16/4

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7 0
3 years ago
Juanita ran 8.3 miles in Week 1 and 12.09 miles in Week 2. She used the subtraction below to determine how much farther she ran
AfilCa [17]

Step-by-step explanation:

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The error that Juanita made is that she made a computational error when subtracting.

7 0
3 years ago
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