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
Romashka [77]
3 years ago
14

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

cored 94, 77, and 87 on the first three. What range of scores on the fourth test will give Alice a B for the semester (an average between 80 and 89, inclusive)? Assume that all test scores have a non-negative value.
Social Studies
1 answer:
IgorC [24]3 years ago
6 0

Answer:

between 62 and 98.

Explanation:

This question can be solved faily easy:

We denote "B" as the value average of the four test values for B score (between 80 - 89) and "X" as the score on the 4th test so to find the range of values that Alice needs to score in the 4th test we only have to replace in the next formula:

B=\frac{94 + 77 + 87 + X}{4}

X=4*B-94-77-87

We reformulate the equation in function of B

We have the next range of values for "B" (80, 81, 82, 83, 84, 85, 86, 87, 88, 89), we replace those values in the formula and operate to get the range of values we need to score in the 4th test.

X=4*80-94-77-87=62

X=4*81-94-77-87=66

X=4*82-94-77-87=70

X=4*83-94-77-87=74

X=4*84-94-77-87=78

X=4*85-94-77-87=82

X=4*86-94-77-87=86

X=4*87-94-77-87=90

X=4*88-94-77-87=94

X=4*89-94-77-87=98

As we can see for Alice to get a B for the semester she needs to score on the 4th test a score between 62 and 98 points.

You might be interested in
Function of leaf in points in short plz​
Lady bird [3.3K]

Answer:

* Photosynthesis: The way toward delivering energy rich food, known as photosynthesis, essentially happens in the leaves of plants. This process basically includes the retention of water by means of roots, of light principally by the chlorophyll colors, and of carbon dioxide through the stomatal pores in the leaves.

* Transpiration: Plants lose an enormous volume of water through the leaves as vapor. The exit of water is through the stomata and the fingernail skin, however stomatal happening is generally more predominant than cuticular happening. It is assessed that the deficiency of water by means of stomata through the process of Transpiration surpasses 90% of the water consumed by the roots.

* Floral Induction: The plant leaves combine and trans-locate the blossom inciting flower-inducing hormone called florigen to the buds.

* Food Storage: The leaves serves as food storage organ of the plant both incidentally and on long term premise. Under positive conditions, the pace of photosynthesis may surpass that of movement of photosynthates toward different organs. During the day time, sugars aggregate in the leaves and starch is integrated and put away in the chloroplasts.

Explanation:

Leaf, in organic science, any normally smoothed green outgrowth from the stem of a vascular plant. As the essential locales of photosynthesis, leaves fabricate nourishment for plants, which thus eventually feed and support all land creatures. Naturally, leaves are a fundamental piece of the stem system. They are connected by a non-stop vascular system to the remainder of the plant so that free transport of nutrients, water, and final results of photosynthesis (oxygen and sugars specifically) can be conveyed to its different parts.

The principle capacity of a leaf is to create nourishment for the plant by photosynthesis. Chlorophyll, the substance that gives plants their trademark green tone, retains light energy. The inward structure of the leaf is secured by the leaf epidermis, which is nonstop with the stem epidermis.

6 0
3 years ago
The MAURYAN EMPIRE achivements
Ronch [10]

Answer:

#1 It was the first dynasty to unify most of the Indian subcontinent.

#2 It is regarded as the largest political entity that has existed in the Indian subcontinent.

#3 It had a sophisticated system of bureaucracy with a unified central government.Explanation:

8 0
3 years ago
Atoms of elements at the top of a group on the periodic table are smaller than the atoms of elements at the Bottom of the group.
Finger [1]
Pls helpppppppppp meeeeeeeeeeeere
6 0
3 years ago
What point of view is the following passage written in: from Ernest Hemingway's The Sun Also Rises "I could picture it. I have a
Ira Lisetskai [31]

its letter b because its letter b

7 0
4 years ago
Read 2 more answers
which free trade agreement initially involved 27 European nations coming together to form the world's largest overall economy?
balandron [24]
<span> EEC, which came into operation in January 1958, was a major step in Europe's movement towardeconomic and political union. By 1950, it ... Britain and other European nations initially declined to join the Common Market and established the weaker European Free Trade Association (EFTA) in 1960 as an alternative.</span><span>
</span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • If the supply curve remains stationary and the demand curve shifts to the left:
    9·1 answer
  • Which of the following would best fill the blank space?
    8·1 answer
  • Macy prefers classes with professors who are visually appealing and entertaining, rather than classes with professors who are kn
    12·1 answer
  • What did NOT occur as a result of the outcome the French and Indian War? A. Restrictions on western settlement increased colonia
    6·1 answer
  • Which branch of the Georgia government is in charge of enforcing laws?
    10·1 answer
  • he Psychology Aptitude Test (PAT) was administered to incoming college psychology majors. Their scores were later compared to th
    13·1 answer
  • Who created the American Red Cross?
    9·1 answer
  • Why were the first people who migrated from Asia called "nomads"?
    15·1 answer
  • Name 2 ways in which fibres are classified ​
    11·2 answers
  • Which of the following is an output device?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!