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
Marat540 [252]
2 years ago
7

At each mile marker for the first five miles of a marathon, Ellie was 18 seconds, 9 seconds, 14 seconds, 6 seconds, and 3 second

s ahead of her goal pace. What was her mean time ahead of her goal pace?
Mathematics
1 answer:
mixas84 [53]2 years ago
3 0
The mean is the average.

Let A = mean

A = (18 + 14 + 9 + 6 + 3)/5

A = 50/5

A = 10

Ellie's mean time is 10 seconds.
You might be interested in
What is the value of the underlined digit in 16,403
Ilia_Sergeevich [38]
If the 1 were underlined it would be 10,000
If the 6 were underlined it would be 6,000
If the 4 were underlined it would be 400
If the 0 were underlined it would be 0
If the 3 were underlined it would be 3

8 0
3 years ago
If A and B are independent events with P(A) = .5 and P(B) = .2, find the following:a) P(A U B)b) P(A^c ? B^c)c) P(A^c U B^c)**No
Effectus [21]

If A and B are independent, then P(A\cap B)=P(A)P(B).

a.

P(A\cup B)=P(A)+P(B)-P(A\cap B)=P(A)+P(B)-P(A)P(B)

P(A\cup B)=0.5+0.2-0.5\cdot0.2

\boxed{P(A\cup B)=0.6}

b. I'm guessing the ? is supposed to stand for intersection. We can use DeMorgan's law for complements here:

P(A^c\cap B^c)=P(A\cup B)^c=1-P(A\cup B)

P(A^c\cap B^c)=1-0.6

\boxed{P(A^c\cap B^c)=0.4}

c. DeMorgan's law can be used here too:

P(A^c\cup B^c)=P(A\cap B)^c=1-P(A\cap B)=1-P(A)P(B)

P(A^c\cup B^c)=1-0.5\cdot0.2

\boxed{P(A^c\cup B^c)=0.9}

4 0
2 years ago
What is the product?<br> (-2d^2+s)(5d^2-6s)
wlad13 [49]

The answer is −10d4+17d2s−6s2

5 0
2 years ago
A=1/2bh , solve for b
anygoal [31]
B= the base of the object
6 0
2 years ago
Read 2 more answers
A traffic study determined that a larger city population indicates a
adoni [48]

Answer:

There must he a circulation. May not be causation.

5 0
2 years ago
Other questions:
  • 17.
    8·2 answers
  • 585=5x^3<br> solve for x
    5·1 answer
  • find two numbers, both smaller than 100, that have common multiple of 450 and highest common factor of 15
    7·1 answer
  • QUICKLY HELP! Which ratio forms a proportion with 14/42? 1/4<br> 7/21<br> 12/40<br> 28/80
    12·2 answers
  • Which statement matches the graph that is shown below? 1​
    14·1 answer
  • Luke listens to the three most popular songs on the radio this week. The length of each song is show #1 song: 3-minutes 2 1 57 #
    15·1 answer
  • Which equation has the same solution as x ^ 2 - 10x + 18 = 0
    12·1 answer
  • 10 points help me please
    14·2 answers
  • Please help me I will fail the exam help me please
    10·1 answer
  • Cuál es el número que no pertenece a esta sucesión 99 koma 105 koma 111 koma 117 koma 123 koma 129 koma 135 koma 141 koma 147 ko
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!