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SVETLANKA909090 [29]
3 years ago
5

Plz help i need the answer

Mathematics
2 answers:
astra-53 [7]3 years ago
5 0
Part A:
Area of a circle is pi*radius^2
a=3.14*1^2
a=3.14

Part B:
Area of a rectangle is length*width
a=5*7
a=35

Part C:
Area of the shaded part would be the area of the rectangle - the area of the circle
a=35-3.14
a=31.86

Fudgin [204]3 years ago
5 0
Part A:

Area of circle: πr²

Diameter = 2
radius = 2/2 = 1

A = (3.14)(1)²
A = 3.14

Part B:

Area of rectangle: L × W

A = 5 × 7
A = 35

Part C:

Area of shaded region = area of rectangle - area of circle. 

A of shaded region = 35 - 3.14 = 31.86

Hope this helps :)
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\blue\textsf{\textbf{\underline{\underline{Question:-}}}}

Evaluate the expression 4(2x+y)-2y+z for x=-2, y=4 and z=-3

\blue\textsf{\textbf{\underline{\underline{Answer and How to solve:-}}}}

Before inserting the values of the variables, I recommend writing the equation in its simplest form.

First, use the distributive property and distribute 4:-

8x+4y-2y+z

Simplifying,

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Now that the expression is in its simplest form, we can substitute the variables and simplify the expression.

First, write -2 in lieu of x:-

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Now, write 4 in lieu of y:-

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Final step:-

write -3 in lieu of z:-

-8+(-3)

-8-3

-11

<h3>Good luck.</h3>

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

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<h3>Answer: 985</h3>

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

Work Shown:

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--------

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A = 100*9.84973267580762

A = 984.973267580762

A = 985

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