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
cricket20 [7]
2 years ago
13

100 points and brainliest for correct answer!

Mathematics
1 answer:
MatroZZZ [7]2 years ago
4 0
Answer B.

∑fx=1637,∑fx
2
=127663,∑f=21
x
ˉ
=Mean=
∑t
∑fx
​
=77.95
σ
2
=
∑f
∑fx
2

​
−(
x
ˉ
)
2
=
21
127663
​
−(77.95)
2
=2.987
σ=1.728
You might be interested in
Students are asked to memorize a list of 100 words. The students are given periodic quizzes to see how many words they have memo
Yuri [45]

Answer:

C. dL/dt=k(100−L)

Step-by-step explanation:

The rate of change of the number of words memorized is proportional to the number of words left to be memorized.

The rate of change is dL/dt.

The rate is a constant k. Since the rate is proportional to the number of words left to be memorized, and the initial number of words is 100, k has to be multiplied by (100-L).

So the correct answer is:

C. dL/dt=k(100−L)

6 0
3 years ago
Add. [12 − 6] [−2 14] (matrix format)
mafiozo [28]

Answer:

The answer is C

Step-by-step explanation:

12-(-2)=10 -6+14=8 1+5=6 -10+15=5

4 0
3 years ago
Hit 96 must play 3minutes of commercials for every 30 minutes of music played how many minutes of commercials must be played for
Vinil7 [7]

Answer:

21

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
What is the value of the expression below when z =5 and w=5? 9z-3w
zysi [14]
This is just about substitution!! 9(5)-3(5), 3 • 5 = 15
9 • 5 = 45
so Now you have, 45 - 15 = 30
7 0
3 years ago
Read 2 more answers
1.
belka [17]
B)subtraction hopes this help:)
5 0
3 years ago
Read 2 more answers
Other questions:
  • What’s 2/5+3/4+1/2 in simplest form
    11·2 answers
  • 40 % of what amount is $256?
    14·1 answer
  • I need to know how to do the systems of equation
    14·1 answer
  • Lim -&gt; 0 sin(2x) /(x*cos(x) )<br><br> help
    12·1 answer
  • You spend 1/5 of your income on car payment. You spend 3/8 of the remainder of your income on rent. What fraction of income issp
    7·1 answer
  • State the domain of the function f(x) = x
    10·2 answers
  • Find the slope of (2,5) and (4,9)
    13·1 answer
  • Question 6 (2 points)
    12·1 answer
  • I need help with math test!!!
    9·1 answer
  • Pls help <br> must find AC
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!