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3 years ago

The area of the figure. Use 3.14 for pie

Mathematics

1 answer:

balu736 [363]3 years ago

5 0

Answer:

54.5 $ft^{2}$

Step-by-step explanation:

divide it to one rectangle and two different triangles.

Rectangles area: (8+3)*4 = 44 $ft^{2}$

triangle top: 4*3/2 = 6 $ft^{2}$

triangle bottom: 3*3/2= 4.5 $ft^{2}$

sum the all up: 44+6+4.5 = 54.5 $ft^{2}$

don't know how to do it with π though if that's obligatory

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Cal is making energy squares. How many 1/2 cups of peanut butter are used in the recipe

Sever21 [200]

Answer:

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Step-by-step explanation:

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3 years ago

Please tell me an easy explanation on how to answer this correctly.

Pavlova-9 [17]

Answer:

-3 - - 6 = 3

2 - - 8 = 10

Step-by-step explanation:

You use keep change change. When subtracting negative you get the first number change the sign to the opposite, then change the second numbers sign

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2 years ago

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const2013 [10]

Answer: 0.07 (choice B)

===================================================

Explanation:

Let's define two events: B = hitting bullseye, and, T = hitting the third (outermost) ring

To figure out the probabilities of each event happening, we need to find the areas of each region. The bullseye is a circle with radius 6 inches (half of diameter 12), so the area is roughly...

A = pi*r^2 = pi*6^2 = 36pi

The radius of the outermost circle is 6+5+5 = 16 inches, leading to an area of

A = pi*r^2 = pi*16^2 = 256pi

So P(B) = (36pi)/(256pi) = 9/64 is the probability of hitting bullseye

-----------------

The area of the third ring is equal to the difference of the overall largest circle and the second largest circle.

The second largest circle has a radius of 6+5 = 11 inches with area pi*11^2 = 121pi square inches

So the third ring has an area of 256pi - 121pi = 135pi square inches

P(T) = probability of hitting the third ring

P(T) = (135pi)/(256pi)

P(T) = 135/256

-----------------

The last thing to do is to multiply the two probabilities P(B) and P(T). This works because the two events B and T are independent

P(B and T) = P(B)*P(T)

P(B and T) = (9/64)*(135/256)

P(B and T) = 0.07415771484376

P(B and T) = 0.07

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3 years ago

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5 x - 2y equals 10 ; (3,-5)

Sedbober [7]

5(3)-2(-5)
15-(-10)
25

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2 years ago

Hi I really need help with a and b. thank you

Len [333]

A) To solve this equation, you would need to fill in the blank with a substitute. Let x represent the unknown number.
$\frac{27}{45}$ = $\frac{x}{5}$

Next, you would cross multiply.
135 = 45x

Now, the last step would be to isolate the x. To do this, you would divide both sides by 45.
3 = x

$\frac{27}{45}$ = $\frac{3}{5}$

b) To solve this equation, you would need to fill in the blank with a substitute. Let x represent the unknown number.
$\frac{2}{6}$ = $\frac{3}{x}$
Next, you would cross multiply.
18 = 2x

Now, the last step would be to isolate the x. To do this, you would divide both sides by 2.
9 = x

$\frac{2}{6}$ = $\frac{3}{9}$

I hope this helps!

6 0

3 years ago