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
Komok [63]
3 years ago
11

In a class in which the final course grade depends entirely on the average of four equally weighted 100-point tests, Harold has

scored 92, 84, and 85 on the first three. What range of scores on the fourth test will give Harold a C for the semester (an average between 70 and 79, inclusive)? Assume that all test scores have a non-negative value.
Mathematics
1 answer:
qaws [65]3 years ago
5 0

Answer:

Between 19 and 55, inclusive

Step-by-step explanation:

70 < Average < 79 (inclusive)

4×70 < sum < 4×79 (inclusive)

280 < sum < 316

280 < 92 + 84 + 85 + X < 316

280 < 261 + X < 316

19 < x < 55

Fourth score can be between 19 and 55, inclusive

You might be interested in
Help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
zavuch27 [327]

\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}

Actually Welcome to the Concept of the Straight lines.

Since there are more than one lines that can land plane safely, we take one of it,

When, X = 10 and Y = 7, so the equation we get as,

y-7 = m(x-10) + c

lets find slope, that is value of m,

y2-y1/x2-x1 = m

so, 9-7/ 7-10 = 2/-3

so, m= -2/3

so the final Equation is,

=> y-7 =(-2/3)(x-10) +c

3 0
3 years ago
(HMMT Combo 2009) Two jokers are added to a 52 card deck and the entire stack of 54 cards is shuffled randomly. What is the expe
myrzilka [38]

The expected number of cards from the card deck that will be strictly between the two jokers is \frac{52}{3} .

<h3>What is card deck?</h3>

The most popular deck of cards used today is a normal 52-card deck of French-suited playing cards. [a] It is the only standard pack[b] used for playing cards in English-speaking nations; but, in many other nations throughout the world, it is used alongside other traditional, frequently older, standard packs with various suit systems, like those with German-, Italian-, Spanish-, or Swiss suits. The English pattern pack is the only one widely accessible in Britain and America and the most popular pattern of French-suited cards globally. The Belgian-Genoese pattern, which was created in France but is also used widely in Spain, Italy, the Ottoman Empire, the Balkans, and much of North Africa and the Middle East, is the second most popular.

Let all pairs of the positions (m,n) of the jokers are equally likely

P[0]=P[|m-n|=1]=\frac{53}{\left(\begin{array}{c}54 \\2\end{array}\right)}=\frac{2}{27}

P[1]=P[|m-n|=2]=\frac{52}{\left(\begin{array}{c}54 \\2\end{array}\right)}=\frac{104}{1431}

P[k]=P|m-n|=k+1=\frac{54-k-1}{\left(\begin{array}{c}54 \\2\end{array}\right)}

the expected value will be

\begin{array}{l}\sum_{k=1}^{52} \frac{54-k-1}{\left(\begin{array}{c}54 \\2\end{array}\right)} k \\=\frac{1}{1431}\left(\sum_{k=1}^{52} 53 k-k^{2}\right) \\=\frac{1}{1431}\left(\frac{53}{2}(52)(53)-\frac{1}{6}(52)(53)(105)\right)\\=\frac{52}{3}\end{array}

Therefore, the expected number of cards that will be strictly between the two jokers is \frac{52}{3} .

To learn more about card deck from the given link:

brainly.com/question/13477028

#SPJ4

5 0
2 years ago
Jia has 80 tiles each tile is white or blue she arranges the tiles in 8 equal rows each row has an equal number of white and blu
s344n2d4d5 [400]

Answer:

5 in each

Step-by-step explanation:

im right please trust

4 0
3 years ago
Which of these people need to buy renters insurance?
pochemuha

The answer to the question is A

5 0
3 years ago
Read 2 more answers
The McIntosh family went apple picking. They picked a total of 115 apples. The family
Tju [1.3M]

Answer:

The solution is 12. The equation is (115 - 19) ÷ 8.

Step-by-step explanation:

We can solve this problem by using division.

First, let's take away 19.

115 - 19 = 96

Now let's divide 96 by 8.

96 ÷ 8 = 12.

And we have 12, our answer.

4 0
3 years ago
Other questions:
  • PLS FAST 98 Points
    12·2 answers
  • How can you solve problems involving percents
    6·1 answer
  • hich statement best describes the domain and range of p(x) = 6–x and q(x) = 6x? p(x) and q(x) have the same domain and the same
    8·1 answer
  • How many types of insurace are there?
    8·1 answer
  • Please I need help. It's urgent
    6·1 answer
  • The triangles shown are similar. Which is an appropriate similarity statement for the triangles?
    8·1 answer
  • The Nutty Professor sells cashews for $7.40 per pound and Brazil nuts for $4.70 per pound. How much of each type should be used
    13·1 answer
  • Three groups of students used different methods to estimate the diagonal length of a patio in feet. Their results were:
    6·1 answer
  • A robot packs boxes in a factory. it runs at a constant speed, and packs 10 boxes in 9 minutes. if the robot operated for 180 mi
    6·1 answer
  • What is the y-intercept of 8y = -16x + 24
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!