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3 years ago

A circle is drawn within a square as shown.

Mathematics

2 answers:

AfilCa [17]3 years ago

6 0

Answer:

okay since there isn't a picture to work with, im going to assume that there is a circle inscribed in a square with a side length of 28, and all the sides of the square are tangent to the circle.

So if you need the area of just the circle, that is 615.75 in^2

If you need the area of the square, but not including the circle 168.25 in^2

And if you need the area of the whole square 784 in^2

Step-by-step explanation:

It is most likely the second one, but answer based what you see in the diagram.

densk [106]3 years ago

4 0

Answer:

hi hi hi

Step-by-step explanation:

hi hi

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Find the absolute value of 7+4|10x-4|>111

Lerok [7]

Answer:

x > 3 or x < -2.2

Step-by-step explanation:

7+ 4|10x-4| > 111

4|10x-4| > 104

|10x-4| > 26

10x-4 > 26 or 10x-4 < -26

10x > 30 or 10x < -22

x > 3 or x < -2.2

8 0

3 years ago

The manager of a fleet of automobiles is testing two brands of radial tires and assigns one tire of each brand at random to the

Feliz [49]

Answer:

a) σ = 4933,64

b) CI 99% = ( - 5746 ; 7194 )

c) No difference in brands

Step-by-step explanation:

Brand 1:

n₁ = 8

x₁ = 38222

s₁ = 4974

Brand 2:

n₂ = 8

x₂ = 37498

s₂ = 4893

As n₁ = n₂ = 8 Small sample we work with t -student table

degree of freedom df = n₁ + n₂ - 2 df = 8 +8 -2 df = 14

CI = 99 % CI = 0,99

From t-student table we find t(c) = 2,624

CI = ( x₁ - x₂ ) ± t(c) * √σ²/n₁ + σ²/n₂

σ² = [( n₁ - 1 ) *s₁² + ( n₂ - 1 ) * s₂² ] / n₁ +n₂ -2

σ² = 7* (4974)² + 7*( 4893)² / 14

σ² = 24340783 σ = 4933,64

√ σ²/n₁ + σ²/n₂ = √ 24340783/8 + 24340783/8

√ σ²/n₁ + σ²/n₂ = 2466

CI 99% = ( x₁ - x₂ ) ± 2,624* 2466

CI 99% = 724 ± 6470

CI 99% = ( - 5746 ; 7194 )

As we can see CI 99% contains 0 and that means that there is not statistical difference between mean life of the two groups

3 0

3 years ago

What does 7 minus the product of 2 and x in algebra?

zmey [24]

7 minus the product of 2 and x in algebra is:

7 - 2x

8 0

4 years ago

The general form of the equation of a circle is x2+y2−4x−8y−5=0.

ludmilkaskok [199]

The general equation of a circle is $(x-a)^{2} + ( y-b)^{2} = r^{2}$ where a and b are the x and y components of the center respectively.

In order to get into this format, we have to use a method that I'm drawing a blank on the same, my apologies about that.

Anyway, what you want is to first isolate the variable on side so now you have: $x^{2} - 4x + y^{2} - 8y = 5$ (you'll see why I rearranged this soon)

Now you have to make it into an equation that can be simplified into the format stated earlier.

So, You have to take the x & y terms (-4x & -8y in this case) divide them each by two, and then square them.

The result of this step is the equation: $x^{2} -4x + 4 + y^{2} - 8y + 16 = 5 + 4 + 16$
Notice the new components that have been added (4 & 16) and how the have been added to both sides. That is an important step.

Now we simplify and get: $(x-2)^{2} + (y-4)^{2} = 25$

So the coordinate of the center is: (2,4) and the radius is 5

6 0

3 years ago

Joey made a deposit of $3,200 into an account that earns 6% simple interest for 3 years. How much does he make in interest?

Mrrafil [7]

Answer:

$576

Step-by-step explanation:

The equation for simple interest is I = PRT, where I is the interest earned, P is the principal/amount deposited, R is the rate as a decimal, and T is time in years.

I = (3200)(0.06)(3)

I = 576

3 0

3 years ago