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
mario62 [17]
3 years ago
7

Sally took her stats test last week and scored a 45%. The class average was 55%with a standard deviation of 4.5. How many standa

rd deviations below the mean did Sally score? (Hint: z-score
)A) 3.33 SD above the mean
B) 2.22 SD below the mean
C) 2.22 SD above the mean
D) 3.33 SD below the mean
Mathematics
1 answer:
sesenic [268]3 years ago
5 0

Answer: A

Step-by-step explanation:

You might be interested in
The graph represents y as a function of x . Which additional point can be plotted so that the graph continues to represent y as
tester [92]

Answer:

I think it's the last one D

Step-by-step explanation:

I'm not 100% sure, but I think the x can't repeat and 4 is the only number of x that hasn't been plotted yet. Tell me if it was right?

5 0
3 years ago
Is 6 15/28 or 6 5/9 bigger?
spayn [35]

Answer:

6 \frac{5}{9}

is greater than

6 \frac{15}{28}

4 0
3 years ago
Read 2 more answers
If the angle of a sector measures 60°, what fraction of the circle is the sector?
maks197457 [2]

The angle of the sector is also equal to the arc measure of the circle. This is because a sector is made up of two radii of a circle.

A circle is 360 degrees.

60 / 360 = 1/6

The sector is 1/6 of the circle.

Hope this helps!! :)

6 0
3 years ago
A positive real number is 6 less than another. If the sum of the square of the two numbers is 38, then finds the numbers.
Serggg [28]

Answer:

There seems to be a typo error but still this has solution.

Let the number be = x

A positive real number is 6 less than another. Means the second will be (x+6)

The sum of the square of the two numbers is 38.

x^{2} +(x+6)^{2} =38  

=> x^{2} +36+12x+x^{2} =38

=> 2x^{2}+12x+36 =38

=> 2x^{2}+12x=2

=> 2x^{2}+12x-2=0

Taking out 2 common;

=> x^{2}+6x-1=0

Solving this quadratic equation, we get;

x=-3+\sqrt{10} and x=-3-\sqrt{10}

As positive number is needed, we have -3+\sqrt{10}

or x = \sqrt{10}-3

x = 0.162277

And other number is 6.162277.

6 0
3 years ago
Read 2 more answers
In circle H with m \angle GHJ= 104m∠GHJ=104 and GH=15GH=15 units, find the length of arc GJ. Round to the nearest hundredth.
AlladinOne [14]

Answer: GJ= 27.23

i dont know how to explain this lol sorry but that answer is right

6 0
3 years ago
Other questions:
  • During an evening out, Dean paid a cab driver $20. He then spent $25 on dinner and half of his remaining money on a painting. He
    12·1 answer
  • Sebuah tangga yang panjangnya 5m bersandar pada dinding rumah. Tinggi dinding yang di capai tangga tersebut adalah 3,5m, jarak u
    5·1 answer
  • Jessie uses 8.2 pints of white paint and blue paint to paint her bedroom walls. 3 4 of this amount is white paint, and the rest
    13·2 answers
  • Identify the constant terms of the expression 5x + 4y - 8x + 9x - 1
    11·1 answer
  • You are aiming to spend $100 or less on meat for a barbeque. Your options are chicken or steak. Chicken costs $1.29/lb and steak
    15·2 answers
  • Ten kids line up for recess. There are five boys and five girls. How many ways are there for the 10 kids to line up so that all
    5·1 answer
  • -8 - 10 x (-1) + 7 x (-1)
    14·2 answers
  • Anyone help me, please I need help<br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7Bx%20-%205%7D%20%20%3D%20%208%20%5Csqrt%5B%5
    13·1 answer
  • Will give brainliest
    9·1 answer
  • -2(-5 - 2) + (2)/(3)
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!