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Natasha_Volkova [10]
3 years ago
7

How much is two thousand three hundred and five-tenths, plus one hundred twenty-five and one-hundredth, plus five thousand ten a

nd fifteen-hundredths?
A. 7,435.21
B. 7,435.66
C. 7,485.25
D. 7,590.1
Mathematics
2 answers:
mrs_skeptik [129]3 years ago
7 0
The answer is B. 

Hope that helps, if you need any more help, just ask : )
ArbitrLikvidat [17]3 years ago
5 0
The answer is B 7,453.66
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Solve the system of equations using substitution y=x-1 and y=-2x+5
pav-90 [236]
Since the two equations equal y, set them equal to each other.

x-1=-2x+5

From there, solve for x.

First get x on one side, by using the addition property of equality.

x-1=-2x+5
3x-1=5

Isolate x by adding 1.
3x=6

Lastly get x all by itself by dividing each side by 3.
x=2

You can now substitute your x-value, 2, into one of the equations (or both, if you wish; either one will result in the same answer.)

y=x-1
y=2-1
y=1

OR

y=-2x+5
y=-2(2)+5
y=-4+5
y=1

Final answer:
x=2 and y=1

Any questions or anything you would like me to clarify, feel free to ask :)
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Step-by-step explanation:

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Step-by-step explanation:

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4 a + 5 b when a = 4 and b = - 1.2

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