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
makkiz [27]
2 years ago
8

There are 15 girls and 12 boys in Ms. Grady's 6th period class. Ms. Grady

Mathematics
1 answer:
ziro4ka [17]2 years ago
5 0

Answer:

5/9

Step-by-step explanation:

Step 1:

15 + 12

Step 2:

27

Step 3:

15/27

Step 4:

15/27 = 5/9

Answer:

5/9

Hope This Helps :)

You might be interested in
Trigonometry<br> Trigonometric Functions<br> Given: Sin θ = (2/3), Find: Cosec θ
rosijanka [135]

Answer:

csc θ = (3/2)

Step-by-step explanation:

Cosecant is just the inverse of sine

8 0
3 years ago
Find an exact value cos 75°
Drupady [299]

Answer:

0.2588

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A normally distributed set of numbers has a mean of 75 and a standard deviation of 7.97. What percentage of values lies between
lana [24]

Answer:

63% of the values lies between 70 and 85.

Step-by-step explanation:

We are given that a normally distributed set of numbers has a mean of 75 and a standard deviation of 7.97.

<em>Let X = Set of numbers</em>

The z-score probability distribution for is given by;

                Z = \frac{  X -\mu}{\sigma}  ~ N(0,1)

where, \mu = mean value = 75

            \sigma = standard deviation = 7.97

The Z-score measures how many standard deviations the measure is away from the mean. After finding the Z-score, we look at the z-score table and find the p-value (area) associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X.

So, percentage of values that lies between 70 and 85 is given by = P(70 < X < 85) = P(X < 85) - P(X \leq 70)

   P(X < 85) = P( \frac{  X -\mu}{\sigma} < \frac{  85-75}{7.97} ) = P(Z < 1.25) = 0.89435  {using z table}

   P(X \leq 70) = P( \frac{  X -\mu}{\sigma} \leq \frac{  70-75}{7.97} ) = P(Z \leq -0.63) = 1 - P(Z < 0.63)

                                                 = 1 - 0.73565 = 0.26435

<em>Now, in the z table the P(Z </em>\leq<em> x) or P(Z < x) is given. So, the above probability is calculated by looking at the value of x = 1.25 and x = 0.63 in the z table which has an area of 0.89435 and 0.73565 respectively.</em>

Therefore, P(70 < X < 85) = 0.89435 - 0.26435 = 0.63 or 63%

<em>Hence, 63% of the values lies between 70 and 85.</em>

6 0
3 years ago
−8 = 3+t again sorry if im hurting yo brain
Oduvanchick [21]

Answer:

-11

Step-by-step explanation:

-8 = 3 + t

-8 - 3 = t

-11 = t

Hope this helps :)

6 0
2 years ago
Please answer asap thank uuuuu
fomenos

Answer:

B

Step-by-step explanation:

4 0
2 years ago
Other questions:
  • A is a 3x3 matrix with det(A) = 4. Find det(adj(A)).
    10·1 answer
  • NEED HELP ASAPP!!!!<br> DUE BY 5!!!!!!!
    7·1 answer
  • HELP PleASE WILL GIVE BRAINLIST
    11·2 answers
  • What repeated operation does a negative exponent show?​
    12·2 answers
  • Find the intersection and union of the sets A and B given below:
    15·1 answer
  • What is the solution to 5n+12=9n-16
    15·2 answers
  • What is 1+1? help plz​
    12·2 answers
  • It does not make much sense to me how to answer this question
    7·2 answers
  • a onion is 0.6 pounds and the cost of that onion is $0.48 what is independent and dependent variables
    10·1 answer
  • Guys please help me man. Please
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!