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dangina [55]
2 years ago
13

X=y-7. X+8y=2 Hellplpp helllpppp! Plz!

Mathematics
1 answer:
Luden [163]2 years ago
6 0
X= -5/7
y= 44/7

Hope this helps!!

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A set of piano prices distributed at a mean of 3000 and a standard deviation of 200 dollars. An electric piano has a price of 25
lana [24]

Answer:

The proportion of piano prices higher than the electric piano is 98.3%

Step-by-step explanation:

The first thing to do here is to calculate the standard score of the price of the electric piano given.

Mathematically, this is

z-score = (x-mean)/SD

where mean is 3000 and SD is 200, x is 2576

z-score = (2576-3000)/200 = -2.12

Now we proceed to calculate the probability of this z-score

The probability we are trying to calculate is

P( x > $2576) or simply P ( z > -2.12)

Using standard score probability calculator or table, we have

P(x>2576) = 1 - P(x<2576)

But, P(x<2576) = 0.017003

P(x>2576) = 1 - P(x<2576) = 0.983

This is same as 98.3%

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3 years ago
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Greeley [361]
Since these both are on the same hour we'll ignore the 5. We end up having :35 and :52. We'll subtract 35 from 52 which gives us 17. The answer to this is 17 minutes.
8 0
3 years ago
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Determine whether the statement is always, sometimes, or never true. Complete the explanation. In parallelogram MNPQ, the diagon
Crank
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the length of one of the diagonals of a quadrilateral is 10 cm and the particular drawn from the opposite vertices to this diago
loris [4]

Answer:

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Step-by-step explanation:

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=35 cm²

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3 years ago
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maksim [4K]

Answer:

It would look like this:

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2 years ago
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