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Ksju [112]
3 years ago
13

On a test, Summer got 12 multiple choice and 4 constructed response questions correct. Summer scored 8 points more than Kerry wh

o got 10 multiple choice and 3 constructed response questions correct. Enter an equation that shows how much each multiple choice question (m) and each constructed response question (c) is worth.
Mathematics
2 answers:
Kazeer [188]3 years ago
7 0

Answer:

2m + c = 8

Step-by-step explanation:

Summer's score = Kerry's score + 8

12m + 4c = 10m + 3c + 8

Combining like terms:

2m + c = 8

kykrilka [37]3 years ago
3 0

Answer:

2m + c = 8

Step-by-step explanation:

Let m be the marks scored for each correct multiple choice question.

Let c be the marks awarded for a correct constructed response question.

It is given in the question:

Summer's score = 12m + 4c

Kerry's score = 10m + 3c

Also, Summer's score - 8 = Kerry's score

or we can write, Summer's score = Kerry's score + 8

Putting in the values, we get:

12m + 4c = 10m + 3c + 8\\= 12m - 10m +4c - 3c = 8\\= 2m + c = 8

The above equation represents that if two multiple questions are correct and a construction based question is correct, then a total of 8 marks is awarded.

Individual values for m and c cannot be calculated because we need two equations to solve for two variable, m and c.

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Evaluate the expression. 0.1×( – 0.9+ – 0.2÷ – 0.5) Write your answer as an integer or a decimal. Do not round.
matrenka [14]

Answer:

-0.05

Step-by-step explanation:

Given the expression :

0.1×( – 0.9+ – 0.2÷ – 0.5)

Evaluating the bracket :

0.1 * (-0.9 - 0.2 ÷ - 0.5)

Solving the division first

-0.2 ÷ - 0.5 = 0.4

Now we have ;

0.1 * (-0.9 + 0.4)

0.1 * - 0.5

= - 0.05

4 0
3 years ago
In the system of equations below, which variable would it be easiest to solve for? x + 4 y = 14. 3 x + 2 y = 12 The easiest to s
Murljashka [212]

Answer:

<h2>The easiest to solve for is x in the first equation</h2>

Step-by-step explanation:

Given the system of equation, x + 4 y = 14. and 3 x + 2 y = 12, to solve for x, we can use the elimination method of solving simultaneous equation. We need to get y first.

x + 4 y = 14............ 1 * 3

3 x + 2 y = 12 ............ 2  * 1

Lets eliminate x first. Multiply equation 1 by 3 and subtract from equation 2.

3x + 12 y = 42.

3 x + 2 y = 12

Taking the diffrence;

12-2y =42 - 12

10y = 30

y = 3

From equation 1, x = 14-4y

x = 14-4(3)

x = 14-12

x = 2

It can be seen that the easiest way to get the value of x is by using the first equation and we are able to do the substitute easily <u>because the variable x has no coefficient in equation 1 compare to equation 2 </u>as such it will be easier to make the substitute for x in the first equation.

5 0
4 years ago
Bananas are $0.59/pounds. what is the constant of proportionality,k?
bogdanovich [222]
1 pound bananas = 4 small bananas - Wikipedia


4 small bananas : 59 cents

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3 years ago
(3x/5-7)+7 is equal to what
Elena L [17]

(3x/5-7)+7

= (3x/-2) + 7

= -3x/2 + 7

5 0
3 years ago
How to solve y=3(0)^2-6(0)-5
Ilya [14]
Y = - 5 

I hope this helps. :)
8 0
3 years ago
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