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
Ghella [55]
3 years ago
8

Eight less than three times a number is -23

Mathematics
1 answer:
Alenkasestr [34]3 years ago
4 0

Answer: 10 is your answer bud ❤

You might be interested in
To qualify for a police academy, candidates must score in the top 10% on a general abilities test. The test has a mean of 200 an
kolbaska11 [484]

Answer:

z = 1.28 < a - 200/20

And if we solve for a we got

a = 200 + 1.28 * 20 = 225.6

So the value of height that separates the bottom 90% of data from the top 10% is 225.6.  

Step-by-step explanation:

Let X the random variable that represent the scores of a population, and for this case we know the distribution for X is given by:

X ~ N (200,20)

For u = 200 and o = 20

For this case we can use the z score in order to solve this problem, given by this formula:

Z = x-u/o

For this part we want to find a value a, such that we satisfy this condition:

P (X > a) = 0.1 (a)

P (X < a) = 0.9 (b)

Both conditions are equivalent on this case. We can use the z score again in order to find the value a.  

As we can see on the figure attached the z value that satisfy the condition with 0.9 of the area on the left and 0.1 of the area on the right it's z=1.28. On this case P(Z<1.28)=0.9 and P(z>1.28)=0.1

If we use condition (b) from previous we have this:

P ( X < a) = P (X-u/o < a - u/o) = 0.9

P (z < a-u/o) = 0.9

But we know which value of z satisfy the previous equation so then we can do this:

z = 1.28 < a - 200/20

And if we solve for a we got

a = 200 + 1.28 * 20 = 225.6

So the value of height that separates the bottom 90% of data from the top 10% is 225.6.  

3 0
2 years ago
Elena has 6,492 stickers in her collection. She wants to put them into a book. She can fit 12 stickers on each page. How many pa
Talja [164]

Answer:

541

Step-by-step explanation:

6492 / 12 = 541 pages

3 0
3 years ago
If the theater has 4,650 seats.If the theater sells all the tickets for each of its 5 shows,how ,any tickets will the theater se
Margaret [11]
The theater will sell 23,250 tickets.
5 0
3 years ago
Read 2 more answers
Help me plz asap!!!!!!!
NISA [10]
I think the answer would be 30 minutes
7 0
3 years ago
Read 2 more answers
50% of 80<br> 50% of 48<br> 50% of 15<br> 25% of 120<br> 25% of 90
Semenov [28]
1. 40
2. 24
3. 7.5
4. 30
5. 22.5
3 0
3 years ago
Other questions:
  • A test has thirty questions worth 100 points. The test consists of True/False questions worth 3 points each and multiple choice
    6·2 answers
  • The sum of three integers is 92. The second number is three times the first number. The third number is ten less than twice the
    7·2 answers
  • O.12 rouded to nearest tenth
    7·2 answers
  • X+2y=4<br> -x-2y=-4<br>the solutions ​
    6·1 answer
  • A machine prints 8 banners in 120 seconds how many seconds does it take to print one Banner
    5·2 answers
  • Can someone explain this and give the answer please asap.
    7·2 answers
  • Make another Fibonacci sequence.This time start with:0,2,...​
    12·2 answers
  • Assume that y varies directly with x. If y = -5 when
    10·1 answer
  • Answer so I can give you brainliest.
    15·1 answer
  • PLEASE HELP IF YOU KNOW THIS!!!!!
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!