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3 years ago

Which function models the area of a rectangle with side lengths of 2x – 4 units and x + 1 units? What is the area when x = 3?

Mathematics

1 answer:

Bingel [31]3 years ago

7 0

Answer:

Step-by-step explanation:

Length = 2x-4

Width = x+1

Let x=3 and find the length and width

Length = 2*3-4 = 6-4 =2

Width = x+1= 3+1 =4

The area is given by

A = l*w = 2*4 = 8

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X2+11x-26=0<br> X2 - 25 = 0

Oksanka [162]

X² + 11x - 26 = 0
x² - 25 = 0

(x + 13)(x - 2) = 0
(x + 5)(x - 5) = 0

x = -13
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Kindly Answer This And Don't Waste My PTS! ☁️

GalinKa [24]

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

$\large \sf \underline{Problems:}$

PROBLEM NUMBER 1: Solve 5x+2=22
PROBLEM NUMBER 2: Solve 2x+5=12
PROBLEM NUMBER 3: Solve 2x-5=7

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

$\large \sf \underline{Answers:}$

$\large \qquad \qquad \bold{ \#1. \: x \: = \: 4}$

$\large \qquad \qquad \bold{ \#2. \: x \: = \: \frac{7}{2} }$

$\large \qquad \qquad \bold{ \#3. \: x \: = \: 6}$

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

$\large \sf \underline{Solutions:}$

<h3>Problem Number 1:-</h3>

$\large\rm{5x \: + \: 2 \: = \: 22}$

$\large\rm{5x \: = \: 22 \: - \: 2}$

$\large\rm{5x \: = \: 20}$

$\large\rm{x \: = \: \frac{20}{5} }$

$\large\rm\green{x \: = \: 4}$

$\therefore$ The answer of you're problem is x = 4.

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

<h3>Problem Number 2:-</h3>

$\large\rm{2x \: + \: 5 \: = \: 12}$

$\large\rm{2x \: = \: 12 \: - \: 5}$

$\large\rm{2x \: = \: 7}$

$\large\rm\green{x \: = \: \frac{7}{2} }$

$\therefore$ The answer of you're problem is 7/2.

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

<h3>Problem Number 3:-</h3>

$\large\rm{2x \: - \: 5 \: = \: 7}$

$\large\rm{2x \: = \: 7 \: + \: 5}$

$\large\rm{2x \: = \: 12}$

$\large\rm{x \: = \: \frac{12}{2} }$

$\large\rm\green{x \: = \: 6}$

$\therefore$ The answer of you're problem is x = 6.

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

Hope this helps!

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