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Anna11 [10]
3 years ago
10

Given the system of equations 4x - 5y=-11 and 2x + y = 5, which equation and which variable would you solve for and why?

Mathematics
1 answer:
Morgarella [4.7K]3 years ago
5 0

Answer:

Answer is below

Step-by-step explanation:

I would use 2x + y = 5 to solve for y since there are no numbers attached to y. Then when I solve for y, I would plug that value into the other equation to solve for x.

If this answer is correct, please make me Brainliest!

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Jim Tree sells trees. The mean length of the trees purchased was 68 inches with a standard deviation of 10 inches. Jim wants to
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Step-by-step explanation:

We know that,

Z=\dfrac{X-\mu}{\sigma}

Where,

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μ = mean = 68

σ = standard deviation = 10

Putting the values,

Z=\dfrac{84-68}{10}=1.6

The percent of his sales that were less than or equal to 84 inches, is

P(Z\leq 1.6)=0.9452=94.52\%\approx 94.5\%

Therefore, the remaining 100-94.5=5.5% were more than 84 inches.

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2 years ago
at the movie theatre, child admission is $5.20 and adult admission is $9.00. on Monday, 132 tickets were sold for a total sales
kakasveta [241]

Answer:

That day 51 child tikets were sold

Step-by-step explanation:

To do this problem we have to make 2 equations, one that represents the number of entries and the other that represents the money

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Now we replace the x with (132 - y) in the second equation

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That day 51 child tikets were sold

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3 years ago
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