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Romashka-Z-Leto [24]
3 years ago
13

The mean score on a physics test was 75 points. Amy’s score was 67 points, which was 2 standard deviations below the mean.

Mathematics
1 answer:
Marrrta [24]3 years ago
3 0

Answer:

16

Step-by-step explanation:

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3 years ago
The number of freshmen entering college in a certain year is 621. What type of data is 621?
horrorfan [7]

Answer:  Third option is correct.

Step-by-step explanation:

Since we have given that

The number of freshmen entering college in a certain year = 621

It is considered as discrete data.

Since we know the definition of Discrete which refers to all types of data which take only numerical values.

It is based on counts.

According to question, we have given the exact number of freshmen instead of any range or interval.

Hence, Third option is correct.

3 0
3 years ago
1. Consider the system of equations below. What could be the first step in solving by elimination?
leva [86]

Answer:

Multiple the first equation by -1

Step-by-step explanation:

After doing this you add the two equations together and follow the systems of equations as normal

-3x+-5y=-16\\3x+2y=10\\-3y=-6\\\frac{-3y}{-3} =\frac{-6}{-3} \\y=2

Therefore y = 2

7 0
3 years ago
How many solutions does the system of nonlinear equations graphed below have ?
Paul [167]

Answer:

A. zero

Step-by-step explanation:

cuz the graphs are not intersecting anywhere. in order for their to be a solution. the graphs must intersect

3 0
3 years ago
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Altogether they spilled about 70 ounces

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