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Andreyy89
3 years ago
13

(2x+4)(x-2) please help

Mathematics
1 answer:
777dan777 [17]3 years ago
8 0

Answer:

2x squared - 8

Step-by-step explanation:

For this kind of equation, we use the distributive property

So in the image below I used a box method (that's how I learned it in school)

So since -4x and 4x cancel each other out, or amount to 0, we don't put anything for those. So the equation left is 2x squared - 8

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prisoha [69]

Answer:

<h2>18) 50.43 m²</h2><h2>19) 252 cm²</h2><h2>11) 6</h2>

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Which one of the following formulas will find the sum of interior angles of a polygon with n sides
Travka [436]
Every added angle to a polygon adds another 180 degrees to the sum of the angles. The starting point is 180 degrees for a triangle (n=3). So the general formula is 180*(n-2). Fill in n=3 to test if 180 comes out, it does!!
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3 years ago
Read 2 more answers
A food cooperative is a business that usually offers special prices on locally grown food and produce. Some are clubs and some a
Hoochie [10]

Answer:

The indifference point is 8 weeks.

Step-by-step explanation:

<u>First, we establish the total cost formula for each:</u>

x= number of weeks

Club:

Total cost= 20 + 15*x

Retail:

Total cost= 17.5*x

<u>Now, we equal both formulas and isolate x:</u>

20 + 15x = 17.5x

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The indifference point is 8 weeks.

<u>Prove:</u>

Total cost= 20 + 15*8= $140

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3 0
3 years ago
1. 2y2 =1.44 please explain how i got my answer
SSSSS [86.1K]

2y^2=1.44\qquad\text{divide both sides by 2}\\\\y^2=\dfrac{1.44}{2}\to y=\pm\sqrt{\dfrac{1.44}{2}}\\\\y=-\dfrac{\sqrt{1.44}}{\sqrt2}\ \vee\ y=\dfrac{\sqrt{1.44}}{\sqrt2}\\\\y=-\dfrac{1.2}{\sqrt2}\ \vee\ y=\dfrac{1.2}{\sqrt2}\\\\y=-\dfrac{1.2\cdot\sqrt2}{\sqrt2\cdot\sqrt2}\ \vee\ y=\dfrac{1.2\cdot\sqrt2}{\sqrt2\cdot\sqrt2}\\\\y=-\dfrac{1.2\sqrt2}{2}\ \vee\ y=\dfrac{1.2\sqrt2}{2}\\\\\boxed{y=-0.6\sqrt2\ \vee\ y=0.6\sqrt2}

5 0
3 years ago
What is the equation for the line of best fit for the following data? Round the slope and y intercept of the line to three decim
vesna_86 [32]

The line of best fit is given by the equation y = 1.56x - 4.105

<h3>Linear equation</h3>

A linear equation is in the form:

y = mx + b

where y, x are variables, m is the rate of change (slope) and b is the y intercept.

Plotting the points on a graph using geogebra online tool:

The line of best fit is given by the equation y = 1.56x - 4.105

Find out more on Linear equation at: brainly.com/question/13763238

3 0
3 years ago
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