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
Ede4ka [16]
3 years ago
5

A school buys 200 calculators at a special price. x of them were scientific calculators at R89 a piece and the rest were financi

al calculators at R599 a piece. An expression, in terms of x, for the total number of financial calculators bought is ...
Mathematics
2 answers:
evablogger [386]3 years ago
8 0

Answer:

The required expression, in terms of x for the total number of financial calculators bought is given by : 200 - x

Step-by-step explanation:

Total number of calculators = 200

Price of each scientific calculator = R 89

Price of each Financial calculator = R 599

Let number of scientific calculators bought be x

So, number of financial calculators bought = 200 - x

Let total cost of buying 2000 calculators be R y

Hence, Expression for total cost of buying 200 calculators :

y = 89·x + 599·(200 - x)

And the required expression, in terms of x for the total number of financial calculators bought is given by : 200 - x

Readme [11.4K]3 years ago
5 0
Let the number of financial calculators purchased = "y"

So, x + y = 200

200 - x = total number of financial calculators purchased

Hope I helped!! xx
You might be interested in
Can you help me out with number 7
Ratling [72]

Answer:

111

Step-by-step explanation:

Please mark brainliest

7 0
3 years ago
How do I show the relationship between the input and the output
alexgriva [62]

Answer:

Types of Relationships between the Input and Output

The scatter plot can be a useful tool in understanding the type of relationship that exist between the inputs (X’s) and the outputs (Y’s)

Step-by-step explanation:

1. No Relationship: The scatter plot can give an obvious suggestion if the inputs and outputs on the graph are not related. The points will be scattered throughout the graph with no particular pattern. For no relationship to exist, points have to be completely diffused. If some points are in concentration, then maybe a relationship does exist and our analysis has not been able to uncover it.

2. Linear and Non-Linear: A linear correlation exists when all the points are plotted close together. They form a distinct line. On the other hand points could be close together but they could form a relationship which has curves in it. The nature of the relationship has wide ranging implications.

3. Positive and Negative: A positive relationship between the inputs and the outputs is one wherein more of one input leads to more of an output. This is also known as a direct relationship.

On the other hand a negative relationship is one where more of one input leads to less of another output. This is also known as an inverse relationship.

4. Strong and Weak: The strength of the correlation is tested by how closely the data fits the shape. For instance if all the points are scattered very close together to form a very visible line then the relationship is strongly linear. On the other hand, if the relationship does not so obviously fit the shape then the relationship is weak.

I don't know if this was exactly what you were looking for; hope it is! :)

7 0
3 years ago
A floor plan is drawing using a scale of 3cm/15ft what is the length is represented by 1 centimeter?
Reptile [31]

Answer:

1cm=5ft

Step-by-step explanation:

divide 15 by three

5 0
3 years ago
What is -5 to the 4 power in expanded form
Kruka [31]
-5 to the 4th power in expanded form would be -5 x -5 x -5 x -5.  This is equal to positive 625.
8 0
3 years ago
Read 2 more answers
Heron Island is a coral cay in the Great Barrier Reef. Around Heron Island (and elsewhere in Australia) there are 2 color morphs
kobusy [5.1K]

In case A, as the error would be a difference of 1, the assumption could be mantained, but in case B the difference will be bigger, showing that the ratio is not 3:1 but 4:1.

<h3><u>Ratios</u></h3>

Given that a preliminary study was carried out to test the hypothesis that the ratio of white to dark herons on the island was 3:1, but A) a small census found 16 white morphs and 4 dark, to determine if the assumption of a 3 :1 ratio could be rejected, and B) to determine the same question if the census were larger with 160 white morphs and 40 dark, the following calculations must be made:

A)

  • 3 + 1 = 4
  • 16 + 4 = 20
  • 4 = 20
  • 3 = X
  • 60 / 4 = X
  • 15 = X
  • Therefore, as the error would be a difference of 1, the assumption could be mantained.

B)

  • 3 + 1 = 4
  • 160 + 40 = 200
  • 150 = 3:1
  • In this case, the difference will be bigger, showing that the ratio is not 3:1 but 4:1.

Learn more about ratios in brainly.com/question/1504221

3 0
2 years ago
Other questions:
  • A pair of shoes costs $52.99 and the state sales tax is 8%. Use the formula C = p + rp to find the total cost of the shoes, wher
    7·2 answers
  • PLEASE PLEASE PLEASE PLEASE PLEASE HELP! ANSWER WORTH 25 POINTS! I need answers ASAP!
    6·1 answer
  • .
    10·2 answers
  • What’s two plus three
    13·2 answers
  • The drama club was selling tickets to the school play. Adult tickets cost $8.00 each, and student tickets cost $5.00 each. The l
    8·1 answer
  • part of the object is a rectangle that is twice as tall it is wide one of the rectangles sides is also a side of a pentagon
    8·1 answer
  • ASAP PLEASE HELP ME !!!!
    10·2 answers
  • I have to solve for H​
    7·1 answer
  • 18 ≤ -2x = what?? please answer im in class
    8·1 answer
  • Help me to the this question​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!