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gogolik [260]
2 years ago
7

Find the circumference and area of a circle with diameter 22 ft.

Mathematics
2 answers:
Nat2105 [25]2 years ago
8 0
Jsjjduusu cjusuuahd ciusuux
Vlad [161]2 years ago
8 0

Answer:

C ≅ 69.08

a= 380.1 square inches

Step-by-step explanation:

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-3x-y=-17 4x + 2 y equals 20
ExtremeBDS [4]
-3x - y = -17
4x + 2y = 20

multiply one part of the equation so that we can be able to use the process of elimination.

(-3x - y = -17)2
4x + 2y = 20

Now we have:

-6x -2y = - 34
4x+2y= 20
------------------------
-2x = -14

Divide -2 on both sides.

-2x = -14
/-2       /-2

x = -7.


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

To solve for y, we just have to substitute the value of x to any of the equation given above, that we feel comfortable with. And I'm going to choose this equation: 4x + 2y = 20


4x + 2y = 20

4(-7) + 2y = 20

-28 + 2y = 20

Add 28 on both sides

-28 + 2y = 20
+28          +28
---------------------
2y = 48
/2      /2

y = 24.


The last thing you would do is to check if the answers is correct.
All you have to do is plug in the values of x and y into both equations and see if they equal to one another.

You may have to do this by yourself :P

Anyways, if you have any questions about this topic, feel free to PM me or any other users interested. Thank you for being part of Brainly! Have a nice day!










4 0
2 years ago
If the radius of a circle is 4 1/4 feet, what is the diameter
iragen [17]
All i know is that if the radius of a circle is 4 feet, the the diameter is 8 feet. Sorry, I don't know the rest.
4 0
2 years ago
Solve the equation. Explain each step and identify the property used to reach each step.
Tom [10]

To isolate x, we will first subtract 0.8 from both sides.

0.6x + 0.8 = 1.4

-0.8 -0.8

0.6x = 0.6

Now all we have to do is divide both sides by 0.6, because it is the number besides x.

0.6x/0.6 = 0.6/0.6

x = 1

So you get the answer of x = 1.

7 0
2 years ago
Last week, a store sold laptops worth a total of $10,885. Each laptop cost $1,555. Hoy many laptops did the store sell last week
aliina [53]
1,555 x 7 = 10,885 so 7 is the answer
4 0
3 years ago
Read 2 more answers
Which equation represents exponential decay?
melamori03 [73]

Answer: The correct option is the third one; y=10(0.13)^x

5 0
2 years ago
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