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3 years ago

The radius of a circle is 42 inches. What is the circle's area? Use 3.14 for .

Mathematics

2 answers:

aalyn [17]3 years ago

7 0

Answer:

5,538.96 in

Step-by-step explanation:

A=π r^2

Remember r^2 is r * r.

r^2 = 42*42= 1,764

A= 3.14 * 1,764 = 5,538.96in

Mazyrski [523]3 years ago

3 0

Answer:

A =5538.96 in^2

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

We know the radius is 42 and pi is approximated by 3.14

A = 3.14 * 42^2

A =5538.96 in^2

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Step-by-step explanation:

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4 years ago

Is 18-3(2p+4) -3p equivalent to 3(2-3p)

Murljashka [212]

Answer:

<u>Yes they are equivalent.</u>

Step-by-step explanation:

Use PEMDAS: Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction

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They are equal, hope the helps ;)

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3 years ago

Two points defining a linear function are shown in the table below. x y –14 –18 –10 –12 What is the slope of the function? Two-t

Mazyrski [523]

Answer:

Option B.

Step-by-step explanation:

From the given table it is clear that the linear function passing through the points (-14,-18) and (-10,-12).

The slope of a linear function is

$m=\dfrac{y_2-y_1}{x_2-x_1}$

The given line passing through the points (-14,-18) and (-10,-12), so the slope of the line is

$m=\dfrac{-12-(-18)}{-10-(-14)}$

$m=\dfrac{-12+18}{-10+14}$

$m=\dfrac{6}{4}$

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4 years ago

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What is the distance between the lines y = 2x and y = 2x+5? Round your answer to the nearest tenth.

Ilia_Sergeevich [38]

The distance between both lines is 2.24 units

Step-by-step explanation:

There is no straight method to find the distance between two lines. The distance can be found out by finding a point on one line and then finding the distance of that point from the other line. The y-coordinate of point is obtained by putting any value of x in equation . The x and y combined give us the point.

Given

$y=2x\\Putting\ x=1\\y=2(1)\\y=2\\So, the\ point\ on\ y=2x\ is\ (1,2)$

We have to find the distance of this point from y=2x+5

$y=2x+5\\Subtracting\ y\ from\ both\ sides\\y-y=2x+5-y\\2x-y+5=0$

The formula for finding distance of a point (x,y) from a line is:

$d=\frac{|Ax+By+C|}{\sqrt{A^2+B^2}}$

A=2

B=-1

C=5

Putting the values in the formula

$d=\frac{|(2)(1)+(-1)(2)+5|}{\sqrt{(2)^2+(-1)^2}}\\d=\frac{|2-2+5|}{\sqrt{4+1}}\\d=\frac{|5|}{\sqrt{5}}\\d=\frac{5}{\sqrt{5}}\\d=2.236\ units$

Rounding off will give: 2.24 units

The distance between both lines is 2.24 units

Keywords: Equations of lines

Learn more about distance in lines at:

#LearnwithBrainly

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3 years ago

The radius of a circle is 42 inches. What is the circle's area? Use 3.14 for ​.

The radius of a circle is 42 inches. What is the circle's area? Use 3.14 for .