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3 years ago

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If f(x) = -5, find the value of x in the function f(x) = 6x + 1.

1 answer:

Debora [2.8K]3 years ago

5 0

Answer:

X = -1

Step-by-step explanation:

f(-1) = 6(-1) + 1

6 * -1 = -6

-6 + 1 is equal to -5

I hope this helps (:

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<u>QUESTION 2a</u>

We want to find the area of the given right angle triangle.

We use the formula

$Area=\frac{1}{2}\times base\times height$

The height of the triangle is $=a cm$ .

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We substitute the given values to obtain,

$Area=\frac{1}{2}\times 12\times a cm^2$ .

This simplifies to get an expression for the area to be

$Area=6a cm^2$ .

<u>QUESTION 2b</u>

The given diagram is a rectangle.

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$Area=length \times width$

The length of the rectangle is $l=7cm$ and the width of the rectangle is $w=ycm$ .

We substitute the values to obtain the area to be

$Area=7 \times y$

The expression for the area is

$Area=7y$

<u>QUESTION 2c.</u>

The given diagram is a rectangle.

The area of a rectangle is given by the formula

$Area=length \times width$

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We substitute the values to obtain the area to be

$Area=2x \times 4$

The expression for the area is

$Area=8x$

<u>QUESTION 2d</u>

The given diagram is a square.

The area of a square is given by,

$Area=l^2$ .

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The expression for the area is

$Area=b^2 m^2$

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$Area=\frac{1}{2}\times base\times height$ .

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The base of the triangle is $6a cm$ .

The expression for the area is

$Area=\frac{1}{2}\times 6a \times 4cm^2$

$Area=12a cm^2$

<u>QUESTION 3a</u>

Perimeter is the distance around the figure.

Let P be the perimeter, then

$P=x+x+x+x$

The expression for the perimeter is

$P=4x mm$

<u>QUESTION 3b</u>

The given figure is a rectangle.

Let P, be the perimeter of the given figure.

$P=L+B+L+B$

This simplifies to

$P=2L+2B$

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$P=2(L+B)$

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The given figure is a parallelogram.

Perimeter is the distance around the parallelogram

$Perimeter=3q+P+3q+P$

This simplifies to,

$Perimeter=6q+2P$

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$Perimeter=2(3q+P)$

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The given figure is a rhombus.

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This simplifies to,

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We simplify to get,

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The figure is an isosceles triangle so two sides are equal.

We add all the distance around the triangle to find the perimeter.

This implies that,

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The given figure is a scalene triangle.

The perimeter is the distance around the given triangle.

Let P be the perimeter. Then

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This simplifies to give us,

$P=3x+2x+4x+5-1+1$

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The given figure is a trapezium.

The perimeter is the distance around the whole trapezium.

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This will simplify to give us the expression for the perimeter to be

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The area of a square is given by the formula;

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The given figure is a rectangle.

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