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larisa86 [58]
2 years ago
7

Substitute ×=3in the following equation to find y5y - 2x=9​

Mathematics
1 answer:
Alexxx [7]2 years ago
6 0

Answer:

y=3

Step-by-step explanation:

5y-2(3)=9

5y-6=9

+6       +6

5y=15

/5    /5

y=3

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Answers please! I’m a bit confused
scoray [572]

Answer:

all work is shown and pictured

5 0
2 years ago
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HELP ASAP. a kite has diagonals of 18 inches and 21 inches as seen below. what is the perimeter of the kite
timofeeve [1]

Answer:

78 inches

Step-by-step explanation:

perimeter of a kite formula: 2(a+b)

a= 18 inches

b= 21 inches

2(18+21)

2(39)

78 inches

8 0
3 years ago
A manufacturer finds that the revenue generated by selling x units of a certain commodity is given by the function R(x) = 60x −
bonufazy [111]
R(x) = 60x - 0.2x^2

The revenue is maximum when the derivative of R(x) = 0.
dR(x)/dx = 60 - 0.4x = 0
0.4x = 60
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Therefore, maximum revenue is 60(150) - 0.2(150)^2 = 9000 - 4500 = $4,500
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7 0
2 years ago
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Solve using substitution.
alexandr1967 [171]
You take the first equation and make a value for y. So 6x + y =7 change it to :
y = -6x + 7
Now in the second equation replace the “y” with -6x +7 this is what it means to use substitution method . Your combined equation will now be :
8x + 9(-6x + 7) =17
Now do distributive property and you get :
8x + -54x +63 =17
Now combine like terms ;
-46x +63 =17
-46x =-46
x = 1
Now replace 1 for X value and we can get the value of Y .
Y=1
X=1
8 0
3 years ago
I got 121 but im not sure if im right​
Alexeev081 [22]

Answer:

is 121 ........

Step-by-step explanation:

Hope this help

7 0
2 years ago
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