Answer:
y = -5
Step-by-step explanation:
Isolate y:
-3x + 9y = -57
9y = -57 + 3x
y = (-57/9) + (3/9)x
Substitute for x:
y = (-57/9) + (3/9)(4)
y = (-57/9) + (12/9)
y = (-45/9)
y = -5
Answer:
(0,0)
Step-by-step explanation:
Answer:
The range would you expect 99.00 percent of the grades is 44.2 to 95.8
Step-by-step explanation:
In order to calculate the range would you expect 99.00 percent of the grades we would have to make the following calculation:
range would you expect 99.00 percent of the grades=mean ± 2.58* standard deviation
According to the given data we have the following:
mean=70
standard deviation=10
Therefore, range would you expect 99.00 percent of the grades= 70± 2.58*10
=70 - 2.58*10 to 70 + 2.58*10
Therefore, range would you expect 99.00 percent of the grades=44.2 to 95.8.
I may not be correct but I think there will be about 62 dishes of both
There is a way to work it out with a pencil and paper, but that's too complicated
to try and explain with only text, like we have here.
I don't usually recommend this for things that can be done easily on paper ...
but for square roots, your best bet is to use a calculator.
The square root of 30 does not come out even. It starts out 5.477225...
and it keeps going and never ends.
The negative of 5.477225... is also a square root of 30. Every number has
two square roots ... the positive and negative of the same number.