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bagirrra123 [75]
2 years ago
5

Find the probability that a randomly

Mathematics
1 answer:
Lerok [7]2 years ago
4 0

Fine the area of the circle:

Area of a circle = pi x r ^2

Area of the circle = 3.14 x 4^2 = 50.24 square cm

Find the area of the triangle:

Area of triangle = 1/2 x base x height

Area =1/2 x 8 x 4 = 16 square cm

Find the area of the white part by subtracting the area of the triangle from the circle:

50.24 - 16 = 34.24 square cm.

The probability of landing in white is the area of white/ area of circle:

34.24/50.24 = 0.682

Multiply by 100 to get percent:

0.682 x 100 = 68.2%

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Which of these lines is perpendicular to the line y = 3x + 2?
Morgarella [4.7K]

Answer:

(c)  y=\frac{-1}{3}x+4  will be perpendicular to the line y = 3x+2

Step-by-step explanation:

We have given the the equation of line as y = 3x+2

We know the equation of line as y = mx+c , here m is slope and c is intercept

On comparing with standard equation of line m = 3

We know that slope of perpendicular line is =\frac{-1}{m}

So the slope of the line which is perpendicular to y = 3x+2  will be =\frac{-1}{3}

Now (a) Line is given as y=\frac{1}{3}x+3 its slope is \frac{1}{3} so it will be not perpendicular

(b)  Line is given as y=\frac{1}{3}x+2 its slope is \frac{1}{3} so it will be not perpendicular

(c)  Line is given as y=\frac{-1}{3}x+4 its slope is \frac{-1}{3} so it will be perpendicular to the line y = 3x+2

(d) Line is given as y=3x+\frac{1}{2} its slope is 3 so it will not perpendicular to the line y = 3x+2

3 0
2 years ago
WILL MARK BRAINLEST TO THE CORRECT ANSWER (55 POINTS!!!)
nikitadnepr [17]

Answer:

y=20

Step-by-step explanation:

6 0
2 years ago
Question #7multiplechoice score: in a certain candy store, 3 pounds of candy and 2 pounds of mints cost $10.80, and 1 pound of c
irga5000 [103]
Let the cost of one pound of candy be x and one pound of mint be y.

3x+2y=10.8 a 
x+3y = 5.35  b 
 B*3 = 3x+9y = 16.05 b
 
b-a = 7y = 16.05-10.8= 5.25
           y = 5.25/7 = 0.75 

The cost per pound of mints is $0.75 


6 0
3 years ago
Find the area and the circumference of a circle with diameter 4 ft
GenaCL600 [577]

Answer:

Circumference is 12.56

Area is 6.28

Step-by-step explanation:

4×3.14=12.56

2×3.14=6.28

5 0
2 years ago
You ask your friend which U.S. states have the greatest population densities. Your friend says it must be California and Texas b
Brilliant_brown [7]
"<span>-No, because California and Texas also have two of the greatest areas, so they may not have the greatest population densities." 

This is correct as the states such as New Jersey may not have as large as a population as Texas and California but, have a significantly less land than those states. Population density refers to people per km squared, which takes both land and population into account.

Hope this helps!
-Benjamin</span>
6 0
3 years ago
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