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puteri [66]
3 years ago
13

Someone please help I cannot figure this out PLEASE

Mathematics
1 answer:
sergejj [24]3 years ago
8 0
Let the side of the square = a units,   the area of the square = a^2 sq units

Area of the 4 semicircles  = area of 2 circles = 2 pi r^2 =  2pi (1/2 a)^2
  =   pi a^2 / 2

Probability of a point in the unshaded square being picked)  = area square / area of the total figure  = a^2  / (a^2 * pi/2)   = 1 / pi/2 = 2 /pi

which is approximately  65%
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Johnny is selling tickets to a school play. On the first day of ticket sales he sold 14 senior citizen tickets and 4 child ticke
FrozenT [24]

Johnny is selling tickets to a school play. On the first day of ticket sales he sold 14 senior (S) citizen tickets and 4 child (C) tickets for a total of $200. On the second day of ticket sales he sold 7 senior (S) citizen tickets and 1 child (C) ticket for a total of $92. What is the price of one child ticket?

14S + 4C = 200

14S = 200 - 4C

S = (200 - 4C)/14

7S + 1C = 92

7S = 92 - C

S = (92 - C)/7

(200 - 4C)/14 = (92 - C)/7

7 x (200 - 4C) = 14 x (92 - C)

1400 - 28C = 1288 - 14C

1400 - 1288 = 28C - 14C

112 = 14C

C = 112/14 = 8

the price of one child ticket = $8

8 0
3 years ago
What is the surface area of the triangular prism represented by the net below?
abruzzese [7]
There isnt a image of the shape
7 0
3 years ago
If –y + 2x^2 – x = -5y^3 then find dy / dx in terms of x and y.
vlada-n [284]

Answer:

dy/dx = \frac{4x-1}{1-15y^{2} }

Step-by-step explanation:

-y + 2x²- x = -5y³

2x² - x = y - 5y³

4x - 1 = dy/dx - 15y².dy/dx

dy/dx(1 - 15y²) = 4x - 1

dy/dx = \frac{4x-1}{1-15y^{2} }

8 0
3 years ago
What is the radius of the circle ? (X-3^2+(y-4)^2=49
vodomira [7]

Answer:

7 units

Step-by-step explanation:

The formula for a circle is: (x-x_1)^2+(y-y_1)^2=r^2 , where (x_1, y_1) is the center of the circle and r is the radius.

Right now, we see that r^2 = 49, so to find r, we square root 49 and get 7.

Thus, the answer is 7 units.

Hope this helps!

5 0
3 years ago
Rex earns $9.50 per hour working part-time. He worked 10.5 hours each week for two weeks. What was the total amount rex earned f
agasfer [191]

Answer: 199.5

Step-by-step explanation: 9.5 x 10.5 hours x 2 weeks

3 0
3 years ago
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