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8090 [49]
3 years ago
11

(3x + 1/2 ) + ( 7x - 4 1/2 ) simply the expression

Mathematics
1 answer:
ololo11 [35]3 years ago
5 0

(3x + 1/2 ) + ( 7x - 4 1/2 )

3x+7x + 1/2 - 4 1/2

10x -4

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Could someone help me understand how to solve this?
monitta

Answer:

Amount in 4% account: $550

Step-by-step explanation:

Use simple interest formula I=P\cdot r\cdot t, where

I = interest

P = principal

r = rate (as decimal)

t = time.

<u>4% account:</u>

P_1=x\\ \\r_1=0.04\\ \\t_1=1,

then

I_1=x\cdot 0.04\cdot 1=0.04x

<u>5% account:</u>

P_2=1,500-x\\ \\r_2=0.05\\ \\t_2=1,

then

I_2=(1,500-x)\cdot 0.05\cdot 1=0.05(1,500-x)

You have earned $69.50 in total, so

I_1+I_2=69.50\\ \\0.04x+0.05(1,500-x)=69.50\\ \\4x+5(1,500-x)=6,950\\ \\4x+7,500-5x=6,950\\ \\4x-5x=6,950-7,500\\ \\-x=-550\\ \\x=550\\ \\1,500-x=1,500-550=950

Amount in 4% account: $550

Amount in 5% account: $950

8 0
3 years ago
Gerald has a garden in the shape of a square. The area, in square feet,
victus00 [196]

Answer:

x - 3

Step-by-step explanation:

We know that the area of a square is length times width.

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(x - 3)²

So if each side is (x - 3), then when we do length times width, we get x² - 6x + 9. So our answer is choice D.

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Incline Electronics produces three different products in a plant that is open 40 hours per week. Each product requires the follo
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is thier any way you can take a picture of what the problem is cause alot of the equation are not adding up the way you put them

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What is the property to this problem ab+ac=(b+c)a
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Distributive Property of Multiplication

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3 years ago
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romanna [79]

That particular binomial expression can be simplified to . . . . . <em>1.03 t</em>


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