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PilotLPTM [1.2K]
4 years ago
9

R + 4.6 + 9 = 3r - 11.7 - 7r

Mathematics
1 answer:
Tom [10]4 years ago
3 0
R+4.6+9=3r-11.7-7r

combine all like terms on one side of the equal sign

r+4.6-4.6+9=3r-11.7-7r-4.6
r+9-9=3r-11.7-7r-4.6-9
r-3r=3r-3r-11.7-7r-4.6-9
r-3r+7r=-11.7-4.6-9-7r+7r
r-3r+7r=-11.7-4.6-9

add them all into one term on each: 

5r=-25.3

divide by 5 on both sides: 

r= -5.06
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Could someone please help me out? I've tried to solve this but I'm really having some trouble with it. Please try to explain it
guajiro [1.7K]

To find the area of the shaded region you need find the area of the shaded region and subtract the area of the unshaded region.

Area of a rectangle = width x length

A = (x + 10) x (2x + 5)

Next apply FOIL or First Outer Inner Last

A = (x * 2x) (x * 5) (10 * 2x) (10 * 5)

A= 2x2 + 5x + 20x + 50

A= 2x2 +25x +50

 

Area of a square=  sides2

A= (x + 1)2

A= (x+1) (x+1)

Next apply FOIL or First Outer Inner Last

A = (x *x) (1*x) (1*x) (1*1)

A = x2 + 1x + 1x +1

A= x2 + 2x +1

 

A= 2x2 +25x +50 - 2x2 +25x +50

A= 50x + 100





4 0
3 years ago
Wrote and solve an equation to find the number.The difference of twice a number and 7 is 9​
andrew11 [14]

n - 7 = 9

Step-by-step explanation:

so basically just make up a random variable and place it for the "twice a number" then u sovle it as a 2 step equation

6 0
3 years ago
3(d-8) - 5 = 9(d+2) + 1
attashe74 [19]

Answer:

d = - 8

Step-by-step explanation:

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9d - 3d = -29 - 19

6d = - 48

6d / 6 = -48/6

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7 0
3 years ago
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Oxana [17]

Answer:

64

Step-by-step explanation:

7 0
3 years ago
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Umnica [9.8K]

Solution:

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Here, Principal Amount = $6000

Rate of Interest =  6%

Time = 4 years

Simple Interest = 6000 × 6/100 × 4 = <em>$1440</em>

3 0
3 years ago
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