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trapecia [35]
3 years ago
14

In a multiple choice examination of 20 questions, four marks are given for each correct answers and one mark is deducted for eac

h wrong answer. There is no penalty for not attempting a question. a candidate attempts "a" questions and get "c" correct. Write down, and simplify, an expression for the candidate's total mark in terms of "a" and "c".​
Mathematics
1 answer:
finlep [7]3 years ago
8 0

Answer:

Total Mark = 5c - a

Step-by-step explanation:

Total Mark = 4c - (a - c) = 5c - a

Marks for correct questions = 4c

Marks deducted for incorrect questions = a - c

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8/2(2+2) please help
Semenov [28]

Answer:

16

Step-by-step explanation:

Use the order PEMDAS

So, parenthesises first.

(2 + 2)

= 4

Then divide.

8/2

= 4

Then multiply.

4(4)

= 16

4 0
3 years ago
Read 2 more answers
Plzz anserw all the pics below
Reptile [31]
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8 0
3 years ago
If it costs £12 for 4 cakes, what is the cost of 6 cakes?
andrew11 [14]
It cost £18.you find out how much 2 cakes cost which is £6. then you do £12+£6(sorry if wrong)
8 0
3 years ago
For the function f(x) = (x − 2)2 + 4, identify the vertex, domain, and range. (2 points)
Leto [7]

Answer:

okay

vertex:(2,4)

domain: (-∞,∞)

range: [4,∞)

Step-by-step explanation:

to find the vertex from the equation

f(x) = (x − 2)² + 4

an easy way is to use the numbers given. so the vertex of this equation is x= 2 (because it is always the opposite of itself in the equation) and y= 4 because the point is going up 4.

to find domain is easy. domain is on the x-axis so the equation is a parabola so it has to points at the same direction. therefore it has a domain that goes from negative infinity to positive infinity.

lastly to find range, which is on the y-axis is to find from where the parabola starts and is pointing, either up or down. in this equation the vertex, which is also the starting point starts at 4 and continues to go on- to infinity.

ps i hope this helps.

3 0
3 years ago
During the past half hour, a restaurant has had 23 orders for Pepsi and 15 orders for Mountain Dew. How many more orders have th
Bess [88]
Lets look at the info we have:-

23 orders for Pepsi.
15 orders for mountain dew.

Question:-
How many more orders have there been for Pepsi than for Mountain Dew?

To answer this we will subtract the amount of Pepsi's ordered by the amount of Mountain Dew's ordered. The answer will be the amount of more Pepsi's ordered than the Mountain Dew's.

23 - 15 = 8
8 more Pepsi's were sold than Mountain Dew's.

CHECK OUR WORK:-

15 + 8 = 23
We were RIGHT!!!

So, 8 more Pepsi's were ordered than Mountain Dew's.

Hope I helped ya!1 xD
5 0
3 years ago
Read 2 more answers
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