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Anestetic [448]
3 years ago
6

A calculus exam has a mean of µ = 73 and a standard deviation of σ = 4. Trina's score on the exam was 79, giving her a z-score o

f +1.50. The teacher standardized the exam distribution to a new mean of µ = 70 and standard deviation of σ = 5.What is Trina's z-score for the standardized distribution of the calculus exam?a. z = +.75 b. z = +2.25 c. z = +.50 d. z = +1.50
Mathematics
1 answer:
Vesna [10]3 years ago
7 0

Answer:

+2.25

Step-by-step explanation:

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A line is parallel to y = 2x - 7.<br> What is it's slope?
Vera_Pavlovna [14]

Answer:

Slope = 4.000/2.000 = 2.000

Step-by-step explanation:

Step  1  :

Equation of a Straight Line

1.1     Solve   y-2x+7  = 0

Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).

"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

In this formula :

y tells us how far up the line goes

x tells us how far along

m is the Slope or Gradient i.e. how steep the line is

b is the Y-intercept i.e. where the line crosses the Y axis

The X and Y intercepts and the Slope are called the line properties. We shall now graph the line  y-2x+7  = 0 and calculate its properties

Graph of a Straight Line :

Calculate the Y-Intercept :

Notice that when x = 0 the value of y is -7/1 so this line "cuts" the y axis at y=-7.00000

 y-intercept = -7/1  = -7.00000

Calculate the X-Intercept :

When y = 0 the value of x is 7/2 Our line therefore "cuts" the x axis at x= 3.50000

 x-intercept = 7/2  =  3.50000

Calculate the Slope :

Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is -7.000 and for x=2.000, the value of y is -3.000. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of -3.000 - (-7.000) = 4.000 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)

   Slope     =  4.000/2.000 =  2.000

Geometric figure: Straight Line

 Slope = 4.000/2.000 = 2.000

Processing ends successfully

plz mark me as brainliest :)

7 0
4 years ago
Read 2 more answers
HELLPPPPPPPPPPPPPPPPPPP
puteri [66]

The equation is y = 6x -3.

4 0
3 years ago
Simplify the equations: -3(-2h+-3)
Alex17521 [72]

Answer:6h+9

Step-by-step explanation:

-3(-2h-3)

Open the brackets

6h+9

7 0
3 years ago
What should you multiply the top equation by so that y is eliminated when the
VLD [36.1K]
Your answer is D. 2 :)
8 0
3 years ago
Read 2 more answers
Pls help and thank you!!
nirvana33 [79]
Your answer is A.

why:

because if the y value changes then your vertical will change. if your x changes than your horizontal will change. if it’s compressed, your x value is less than 1.
8 0
3 years ago
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