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PSYCHO15rus [73]
3 years ago
9

Suppose you have a mean standardized score of 1200 points with a standard deviation of 200 points. This data is normally distrib

uted. What is the z-score of 1300 points?
Mathematics
1 answer:
Keith_Richards [23]3 years ago
5 0
The score is given by:
z=(x-mean)/s.d
In the question above:
x=1300
mean=1200
s.d=200
Thus:
z=(1300-1200)/200
=100/200
=0.5
The answer is 0.5
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8 0
3 years ago
Ethan was given a gift card for a coffee shop. Each morning, Ethan uses the card to buy one cup of coffee. Each cup of coffee co
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Answer:

$69.99 or $50.08

Step-by-step explanation:

2 for 1 by dividing by 100: 80/100 =0.8 mulitply price by decimal rate

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Deon rented a truck for one day there was a base fee of $19.99 and there was an additional charge of 98 cents for each mile driv
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Answer:

Deon drove the truck 201 miles.

Step-by-step explanation:

Base Fee + (.98* Number of miles)= Cost

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5 0
3 years ago
Graph y=x+1/x² and y=1/x for positive values of x.
AlekseyPX

Answer:

Graphic is showed in the figure below

Step-by-step explanation:

To graph the equations given, let's do a table for positive values of x, and, by replacing it in the equation, let's calculate the value of y. Knowing the coordinate points (x,y) we can build the graphic.

<em>x        y= x + 1/x²       y = 1/x</em>

1             2                    1

2          2.25               0.2

3          3.11                 0.33

4          4.06               0.25

When x->0 both equations -> ∞, because lim(1/x) x->0 = ∞

The graphic is showed below. In red there is y = 1 + 1/x² and in blue y = 1/x

6 0
3 years ago
The point slope of a line that has a slope of -2 and passes through point (5,-2) is shown below. Which equation is in slope inte
kramer
Y + 2 = -2(x - 5)

Simplify.

y + 2 = -2x + 10

Subtract 2 from both sides.

y = -2x + 10 - 2

Simplify.

y = -2x + 8 → Slope-intercept form

Our answer is the second option : y=-2x+8

~Hope I helped!~
 

7 0
3 years ago
Read 2 more answers
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