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
garri49 [273]
3 years ago
11

SAT scores are normally distributed, with a mean of 500 points and a standard deviation of 100 points. Suppose you take the SAT.

Several weeks later, you receive your results, which show that you reached the 80th percentile for the math portion.
Recalling that SAT scores are always expressed as multiples of 10, how many points did you get on the test?
Mathematics
2 answers:
Bad White [126]3 years ago
7 0

Answer:

580

Step-by-step explanation:

Apex

OleMash [197]3 years ago
3 0
The solution to the problem is as follows:

 <span>Let be X: scores of SAT 

P(X ≥ x) = 0.9 

P((X - 500)/100 ≥ (x - 500)/100) = 0.9 

P(Z ≥ z) = 0.9 

z = 1.28 

1.28 = (x - 500)/100 

128 + 500 = x 

x = 628
</span>
I hope my answer has come to your help. God bless and have a nice day ahead!
You might be interested in
PLEASE HELP!!!
zaharov [31]
Do you have a picture I can use for reference?
3 0
3 years ago
Read 2 more answers
What does AD equal? PICTURE INCLUDED* Triangle congruence and similarity.
mafiozo [28]

Answer:

AD = 7

Step-by-step explanation:

Given that the two triangles are similar by the SSS (side side side) postulate, the triangles share the same ratios when it comes to their sides.

We know the values for lines DB, EB and CB, therefore we can solve for AB, and subtract DB to find AD

We can solve the problem by solving for x:

\frac{x}{32} =\frac{21}{24}

Cross multiply.

24x = 672

Simplify.

x=28

Subtract the value of DB to find AD.

28-21=7

AD=7

8 0
3 years ago
Give the discriminant of the equation 0 = −x2+6x−9<br>please answer
Brut [27]

Answer:

x = 3

Steps:

- ( {x}^{2}  - 6x + 9) = 0

-  {(x - 3)}^{2}  = 0

{(x - 3)}^{2}  = 0

x - 3 = 0

There you go!

8 0
3 years ago
Arrange these numbers from least to greatest 2/5 5/7 4/9
mr Goodwill [35]
4/9 2/5 5/7 is sorted from least to greatest

4 0
3 years ago
Read 2 more answers
There are 20 female performers in a dance recital. The ration of men to women is 4:5. How many men are in the dance recital?
klasskru [66]

Answer:

16

Step-by-step explanation:

men                  women

 4 (times by 4)        :              5  ( times by 4)

             16              :                                 20

please give me brainiest!!!

8 0
3 years ago
Read 2 more answers
Other questions:
  • Please help me..............................
    10·1 answer
  • A bag contains hair ribbons for a spirit rally.The bag contains 3 black ribbons and 12 green ribbons.Lila selects a ribbon at ra
    14·2 answers
  • There were 32 skaters at the rink on Friday. On Saturday, there were 27 skaters at the
    5·1 answer
  • Jon divides 525 by 7. His answer is 75. What is the BEST way to check Jon's answer? A) 75 x 7 B) 75 ÷ 525 C) 525 ÷ 75 D) 525 x 7
    5·2 answers
  • Can someone help pleaseee??
    11·2 answers
  • Given the equation a/b=c/d , what is the value of d. Show your solution
    10·1 answer
  • Help plzzzzzzzzzzzzzzz
    11·1 answer
  • Find the domain of h(x) = 2x - 9 given a range of (-7,5,11)
    13·1 answer
  • If one-third of one-fourth of a number is 15, then three-tenth of that number is:
    12·1 answer
  • GIVING BRAINLIEST PLSSSSS HELP
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!