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ikadub [295]
3 years ago
11

How do you find the area of a circle with the diameter of 2?

Mathematics
2 answers:
Alexeev081 [22]3 years ago
4 0

Answer:

value of pi

Step-by-step explanation:

area of circle = pi x r x r

d= 2 x r

r = 1

pi x 1 x 1 = pi

Lady_Fox [76]3 years ago
4 0
The formula of the area of a circle = pi * (radius)^2
Radius is half of the diameter
So radius = 2/2 = 1
Then the area = pi * 1^2 = pi * 1 =pi
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Find the equation of the line passing through point (4,2) and perpendicular to AB
Setler [38]

Answer:

a. -⅓

b. 3

c. y = 3x - 10

Step-by-step explanation:

a. Gradient of line AB:

A(1, 3), B(7, 1)

Gradient = \frac{y_2 - y_1}{x_2 - x_1} = \frac{1 - 3}{7 - 1} = \frac{-2}{6} = -\frac{1}{3}

Gradient (m) = -⅓

b. The of the line that is perpendicular to line AB would be the negative reciprocal of the gradient of line AB.

Thus, the negative reciprocal of -⅓ = 3

Gradient of the line perpendicular to line AB = 3

c. Equation of the line that passes through (4, 2) and is perpendicular to line AB:

We can write the equation using the point-slope form equation, y - b = m(x - a), where,

(a, b) represents a point on the line, and,

m = gradient/slope

We know that the gradient/slope (m) = 3

Also, a point, (a, b) = (4, 2).

Therefore, substitute a = 4, b = 2, and m = 3 into y - b = m(x - a)

Thus:

y - 2 = 3(x - 4)

y - 2 = 3x - 12

Add 2 to both sides

y = 3x - 12 + 2

y = 3x - 10

5 0
3 years ago
Fill in the blank:
sp2606 [1]
<span>I can be wrong, but I think that the answer is: To find the values of p, q, r and s, you should start by finding all factor pairs of the leading coefficiant and constant term. </span>
4 0
3 years ago
A used car already has 40,000 miles on its odometer. The average owner will drive 12,000 miles per year. What function best mode
alina1380 [7]
The answer i got was 28000
7 0
3 years ago
Which graphs represent functions?? please help me
muminat

Answer:

graph D

Step-by-step explanation:

If you want to figure out if a graph is a function, try the vertical line test

The vertical line test is when you are able to draw a vertical line on any point of the graph, and the line you have drawn will only pass through the graph once. if it passes the graph more than one time, it is not a function

4 0
3 years ago
If it takes sound 1 aecond to travel 1.5km how many km will it travel in 3.7 seconds
kiruha [24]

Lets set up an equation to easier understand this.

1/1.5 = 3.7/x   (x represents the unknown km)

We know that whatever you do to the top you do to the bottom.

And we can see that 1 x 1.5 = 1.5

So we can multiply the same thing by 3.7

1.5 x 3.7 = 5.55

<u>So in this case you would travel 5.55 km in 3.7 seconds. </u>

GOOD LUCK :)

7 0
3 years ago
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