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2 years ago

15

ASAP PLEASE <3A rectangular garden has length and width as given by the expressions below. Length: 4 − 7(3x + 4y) Width: 3x(−

2y) Write a simplified expression for the perimeter of the rectangle. blank − xblank − y −blank xy

1 answer:

creativ13 [48]2 years ago

4 0

Answer:

8 - 42x - 56y - 12xy

Step-by-step explanation:

<u>Given sides of a rectangle</u>

Length: l =4 − 7(3x + 4y)
Width: w = 3x(−2y)

<u>Perimeter of rectangle</u>

P = 2(l + w)

<u>Using the given values</u>

P = 2( 4- 7(3x + 4y) + 3x(-2y)) =
2( 4 - 21x - 28y - 6xy) =
8 - 42x - 56y - 12xy

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1 year ago

Read 2 more answers

between 1995 and 2006, the population of samburg, usa(in thousands) can be modeled by f(x) = 0.35x(squared) - 2.1x+15.8 where x=

Juli2301 [7.4K]

$\bf f(x)=0.35x^2-2.1x+15.8\qquad 
\begin{cases}
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f(x)=\textit{population amount}
\end{cases}$

the equation is a quadratic one, and it has a positive coefficient on the leading term, meaning, is opening upwards, so it has a "burrow" for the vertex.

the minimum or lowest point for a quadratic opening upwards is, well, the vertex point :), the "x" value is the year, the "y" or f(x) value is the population, we're asked for the year, or the x-coordinate of the vertex

well $\bf \begin{array}{llll}
f(x)=&0.35x^2&-2.1x&+15.8\\
&\quad \uparrow &\quad \uparrow&\uparrow \\
&\quad a&\quad b &c
\end{array}
\\\\

\\\\
\qquad \textit{vertex of a parabola}\\ \quad \\
\qquad 

\left(\boxed{-\cfrac{{{ b}}}{2{{ a}}}}\quad ,\quad {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)$

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3 years ago

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BartSMP [9]

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2 years ago

18 POINTS will rate brainiest 6th grade math

stira [4]

Answer:

18 ft^2

Step-by-step explanation:

The area of a parallelogram is A=bh.

The area would be A = 9*4.

A = 36

To find the area of one trapezoid you divide the area of the parallelogram by 2.

36/2 = 18 ft^2

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2 years ago