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3 years ago

Simplify 3m + 3 What is the answer please

Mathematics

2 answers:

zaharov [31]3 years ago

7 0

$\rm \large \implies \: \: 3m \: + \: 3m$

$\rm \large \implies \: \: 6m$

kozerog [31]3 years ago

4 0

Answer:

Step-by-step explanation:

those are like terms so you just have to add them

3m+3m=6m

i hope this helps

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3 years ago

The quantity demanded x of a certain brand of DVD player is 3000/week when the unit price p is $485. For each decrease in unit p

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a) Demand equation : $y=-\frac{2}{25}x+725$

b) Supply equation : $y=\frac{7}{100}x+350$

C) The equilibrium quantity and the equilibrium price are 2500 and $ 525 respectively

Step-by-step explanation:

We are given that For each decrease in unit price of $20 below $485, the quantity demanded increases by 250 units.

Since decrease in unit price of $20 increase demand by 250 units

So, Slope = $\frac{-20}{250}=\frac{-2}{25}$

We are given that The quantity demanded x of a certain brand of DVD player is 3000/week when the unit price p is $485.

Now for demand equation:

Use point slope form : $y-y_1=m(x-x_1)$

So, $y-485=\frac{-2}{25}(x-3000)\\y=-\frac{2}{25}x+725$

a)So, Demand equation : $y=-\frac{2}{25}x+725$

Now to find supply equation

We have two points (0,350) and (2500,525)

$(x_1,y_1)=(0,350)\\(x_2,y_2)=(2500,525)\\y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)\\y-350=\frac{525-350}{2500-0}(x-0)\\y-350=\frac{7}{100}x\\y=\frac{7}{100}x+350$

b) So, Supply equation : $y=\frac{7}{100}x+350$

Now to find equilibrium quantity and price equate demand and supply equation

$-\frac{2}{25}x+725=\frac{7}{100}x+350\\725-350=\frac{7}{100}x+\frac{2}{25}x\\x=2500$

So, equilibrium quantity = 2500

To find equilibrium price substitute equilibrium quantity in any equation

$y=\frac{7}{100}x+350\\y=\frac{7}{100}(2500)+350\\y=525$

C) The equilibrium quantity and the equilibrium price are 2500 and $ 525 respectively

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