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andrezito [222]
3 years ago
7

PLEASE HELP! I need both and can’t figure out the answer!

Mathematics
1 answer:
zhuklara [117]3 years ago
3 0

Answer:

a) 11.75 * 10^6

b) 1.35 * 10^-7

Step-by-step explanation:

Here, we want to find the sum and the difference

a) That would be;

(3.48 + 8.27) * 10^6

= 11.75 * 10^6

b) That would be;

(9.58-8.23) * 10^-7 = 1.35 * 10^-7

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diamong [38]
The given equations are:

5x - 2y = 88
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Multiplying the 1st equation by 2, we get the new set of equations as:

10x - 4y = 176
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Adding the two equations, we get:

10x - 4y + 3x + 4y = 176 + 58
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Using the value of x in 1st equation, we get:

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Alla [95]

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