1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
charle [14.2K]
2 years ago
12

A test had a mean of 72% and a standard deviation of 8 what is the z-score for a test score of 85?

Mathematics
1 answer:
PolarNik [594]2 years ago
3 0

Answer:

The answer to this question is within 2 stabdard deviations

Step-by-step explanation:

to get the score of 85 you got to add the deviation value to the mean whuch creates the deviation. do that multiple times and you get a multiple deviation

72+8=80+8 is 88

88 is greater than 85 so a test score of 85 is within 2 standard deviations of the mean

You might be interested in
You owe your sister $5.35, and she lends you another $4.50, how much do you owe her now
Margarita [4]
You would now have to pay her $9.85
6 0
3 years ago
Add 10 to z, then double the result<br> Do not simplify any part of the expression.
dybincka [34]

2(z+10)

2z+20

Answer:

2z+20

4 0
2 years ago
Drag and drop an answer to each box to correctly complete the explanation for deriving the formula for the volume of a sphere
denis-greek [22]

The answers that would fill in the blanks are

  • 2r
  • a circle
  • an annulus
  • 1/3πr³
  • 4/3πr³
<h3>What is the Cavalier's principle?</h3>

This principle states that if two solids are of equal altitude then the sections that the planes would make would have to be parallel and also be at the same distances from their bases which are equal such that the volumes of the solids would be equal.

Now we have to fill in the blanks with the solution.

For every corresponding pair of cross sections, the area of the cross section of a sphere with radius r is equal to the area of the cross section of a cylinder with radius r and height<u> 2r</u> minus the volume of two cones, each with a radius and height of r. A cross section of the sphere is a <u>circle</u> base of cylinder, is and a cross section of the cylinder minus the cones, taken parallel to the base of cylinder, is an <u>annulus_ </u>.The volume of the cylinder with radius r and height 2r is 2πr³, and the volume of each cone with radius r and height r is 1/3πr³. So the volume of the cylinder minus the two cones is 4/3πr³. Therefore, the volume of the sphere is by Cavalieri's principle

Read more on Cavalieri's principle here

brainly.com/question/22431955

#SPJ1

5 0
11 months ago
Find the slope of (-7,-2) and (-4,7)
algol [13]

Answer:

9/3=3

Step-by-step explanation:

the formula is y2(7) minus y1(-2)

divided by x2(-4) minus x1(-7)

5 0
3 years ago
Read 2 more answers
Please help, im trying get my grade up to go on a date w my bf
Inga [223]

Answer:

a+4b-24

Step-by-step explanation:

You have to multiply the entire equation by 4, which get you a+4b-24

7 0
3 years ago
Read 2 more answers
Other questions:
  • Joshua currently earns $5000 a year from his lawn care business. He has two plans to increase his revenue. Plan 1 would increase
    12·1 answer
  • Three picture frames were measured in inches and the results are shown below, without rounding. Determine which picture frame ha
    7·1 answer
  • If the sum of the measures of interior angles of a regular convex polygon is 1620° how many sides does a polygon have find the m
    11·2 answers
  • 130 divided by 2.5 equals
    6·2 answers
  • Let sin t = a​, cos t = b​, and tan t = c. Write the expression in terms of​ a, b, and c.
    14·1 answer
  • Rainer bought 1.43 pounds of lunch meat at the store for $10.98. What was the unit rate (price) of the lunch meat?
    6·1 answer
  • The solution to 16x = 48 is x = ___.
    10·1 answer
  • Can someone answer this
    15·2 answers
  • What is the cost of a shirt? What is the cost of a soda?
    6·1 answer
  • Help?<br> ------------------
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!