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svetoff [14.1K]
3 years ago
9

The SAT mathematics scores in the state of Florida for this year are approximately normally distributed with a mean of 500 and a

standard deviation of 100.
Using the empirical rule, what is the probability that a randomly selected score lies between 500 and 700? Express your answer as a decimal.

What is the answer?
Mathematics
1 answer:
Sergeeva-Olga [200]3 years ago
7 0
Because it will be  half2 standard deviation which will include 500-700.
2std will include from 300-700.
so it will be half of 95%.
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3 years ago
3x+y=4 <br> 2x-y=6<br> What is the answer to this equation?
nalin [4]

Answer:Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form(2,-2)

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Step-by-step explanation:

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2 years ago
Help, I still cannot wrap my head around this
atroni [7]

Answer:

9 inches.

Step-by-step explanation:

Fun question! The length of a space diagonal for a cube is \sqrt{3*sidelength^2}

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The third cube would have a side diagonal of 3\sqrt{3}

And the fourth cube would have a side diagonal of 9.

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7 0
3 years ago
The front and back covers of a textbook are each 0.3 cm thick. Between the covers are 200 sheets of paper, each 0.008 cm thick.
zysi [14]

Answer:

22 cm

Step-by-step explanation:

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Add the thickness of the front and back cover.

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4 0
2 years ago
Solve the following system of equations: x - 2y = 14 x + 3y = 9
Margarita [4]
Solve your system of equations step by step.

x−2y=14;x+3y=9

Solve x−2y=14 for x:

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x=2y+14

Substitute (2y+14) for x in x+3y=9:

x+3y=9

2y+14+3y=9

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5y=−5

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x=12(Simplify both sides of the equation)



So,

y=-1
x=12

Answer is C)

3 0
3 years ago
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