What is the area? Bit confused on this one.

Mathematics

2 answers:

Anestetic [448]2 years ago

8 0

Answer:

For the blue one:

A1=length*breadth

=3*3x^2

=9x^2

For pink:

A2=length*breadth

=3*4x

=12x

So the total area is:

A=A1+A2

=9x^2+12x

Nutka1998 [239]2 years ago

7 0

Answer:

A = 9x² + 12x

Step-by-step explanation:

The area (A) of the rectangle is calculated as

A = height × width

= 3(3x² + 4x) ← distribute parenthesis by 3

= 9x² + 12x

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Write in standard form the equation of a line with a slope of -3/5 and a y intercept of -3

Vlada [557]

Answer:

5y+3x=-9

Step-by-step explanation:

Let us start by the general form of the standard equation, Ax+By=C. One way we can solve this problem is by finding the slope-intercept form of this equation, y=mx+b, and converting it into the standard equation. In the slope-intercept form, m represents the slope, b represents the y intercept.

From this problem, we are given both the slope and the y intercept. We know have the equation:

$y=-\frac{3}{5}x -3$

Great! Now let us rearrange the terms so that the y and x terms are on one side of the equation.

$y+\frac{3}{5} x=-3$

This seems right, but a standard equation must have coefficient values that are real numbers. So, A and B must be real numbers. We can do this by multiplying the entire equation by 5 and ridding the denominator of the A term.

$5y+3x=-9$