3 years ago

Which expression is equivalent to 3^2-7?

1 answer:

4 0

3 squared becomes 9. 9-7 equals 2, which is the final answer.

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Mila [183]

2x+1>x-(1-x)
2x+1>x-1+x
2x+1>2x-1
1>-1

Any value of x will make this true.

6 0

2 years ago

madam [21]

If it is the answer is A, B, and D

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2 years ago

leonid [27]

The answer for 2 is 320 because you have to keep counting by 40's

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3 years ago

Doss [256]

Answer: .

Step-by-step explanation:

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3 years ago

rewona [7]

Answer:

a. 8.66 minutes

Step-by-step explanation:

Since the flight times are uniformly distributed, the standard deviation can be calculated as follows:

$\sigma = \frac{b-a}{\sqrt{12}}$

Where '<em>b' </em>is the maximum flight time (150 minutes) and '<em>a' </em>is the minimum flight time (120 minutes):

$\sigma = \frac{150-120}{\sqrt{12}}\\\sigma = 8.66\ minutes$

The distribution's standard deviation is 8.66 minutes.

4 0

3 years ago