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Slav-nsk [51]
2 years ago
6

Work out the size of angle a and angle b.

Mathematics
1 answer:
kkurt [141]2 years ago
7 0

Answer:

a= 120

b= 60

Step-by-step explanation:

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8. Given the radius and area of the circle, calculate the angle at the centre of the circle.
pav-90 [236]
The answer is c for this problem
5 0
2 years ago
Select the equation of the line that passes through the point (5,7) and is perpendicular to the x = 4
Kamila [148]

Answer:

y= -1*x +12

Step-by-step explanation:

x=4 is a function that always has the value 4 for the x-axis, no matter y variable, this a vertical function.

Perpendicular Lines are those with the following condition:

y=a*x+b (1)

y=c*x+d (2)

Where a and c are the respective slope

If These two lines are perpendicular, then

a=- 1/c

Using those principles we have that the slope for our needed line has to be -1, since the slope for the first line is 1 (the coefficient of x is 1, in the line x=4)

Lets use the given point (5,7) in the equation (2)

7=-1 * 5 + d

resulting d=12

so, our equation for the line is y= -1*x +12

3 0
3 years ago
I dont know the answer i have tried everything
shusha [124]

Answer:

Total area = 12x^2 + 2x

Perimeter = 18x+4

Step-by-step explanation:

Divide the figure into two separate shapes to make the question easier.

Area = lw

Area (bigger shape) = (3x)(3x)

Area (bigger shape) = 9x^2

Area = lw

Area (smaller shape) = (3x+2)(x)

Area (smaller shape) = 3x^2+2x

Add the areas of the bigger and smaller shapes to get the total area:

Total area = 9x^2 + 3x^2 + 2x

Total area = 12x^2 + 2x

To find the perimeter, add the lengths of all the sides.

(3x)+(3x)+(3x)+(3x)+(3x+2)+(3x+2)

(12x)+(6x+4)

perimeter = 18x+4

8 0
2 years ago
Find the coordinates of A if M(6, -1) is the midpoint of AB, and B has the coordinates (8, -7
nadya68 [22]

The coordinate of point A will be (4, 5).

<h3>What is the mid-point of the line segment?</h3>

Let AB be the line segment and C be the mid-point of line segment AB.

Let the coordinate of point A (x₁, y₁), the coordinate of point B (x₂, y₂), and the coordinate of the mid-point (x, y).

Then the coordinate of the mid-point of the line segment is given as,

(x, y) = [(x₁ + x₂) / 2, (y₁ + y₂) / 2]

If M(6, -1) is the midpoint of AB, and B has the coordinates (8, -7).

Then the coordinate of point A will be

(6, -1) = [(x₁ + 8) / 2, (y₁ - 7) / 2]

(12, -2) = [(x₁ + 8), (y₁ - 7)]

(12 - 8, -2 + 7) = (x₁, y₁)

(x₁, y₁) = (4, 5)

The coordinate of point A will be (4, 5).

More about the mid-point of the line segment link is given below.

brainly.com/question/17188072

#SPJ2

7 0
1 year ago
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Seventy-three divided by five-hundred-eighty-four equals 0.125
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3 years ago
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