SYSTEMS OF EQUATIONS

SYSTEMS OF EQUATIONS

9th Grade

10 Qs

quiz-placeholder

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SYSTEMS OF EQUATIONS

SYSTEMS OF EQUATIONS

Assessment

Quiz

Mathematics

9th Grade

Hard

Created by

CARMEN SARABIA

Used 5+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

3 mins • 1 pt

I have bought three pens and a marker for €6. My friend Rosa has paid €9.25 for two pens and three markers. How much does one pen cost? What about a marker?

x+y=6

3x+y=6

2x+3y=9,25

x+2y=9,25

2.

MULTIPLE SELECT QUESTION

3 mins • 1 pt

Calculate two numbers knowing that the difference between them is 16, and that double the smaller number is five more than the bigger number.

x-y=16

2x=y+5

2y=x+5

2y+x=5

3.

MULTIPLE SELECT QUESTION

3 mins • 1 pt

A customer has paid €3.90 for one kilo of oranges and two kilos of apples at the greengrocer. Another customer has paid €5.70 for three kilos of oranges and one kilo of apples. How much does one kilo of oranges cost? What about one kilo of apples?

x+y=3,90

3x+y=3,90

x+2y=3,90

3x+y=5,70

4.

MULTIPLE SELECT QUESTION

3 mins • 1 pt

Last week we paid €10 for two tickets to the movies and a box of popcorn. Today we paid €22 for four tickets and 3 boxes of popcorn. How much does one ticket cost? And how much does one box of popcorn cost?

4x+3y=22

2x+y=22

2x+y=10

4x+3y=10

5.

MULTIPLE SELECT QUESTION

3 mins • 1 pt

Coffee A is of higher quality and costs €13/kg. Coffee B is of lower quality and costs €8/kg. How much of each do we need to get 30 kilos of coffee mixture that costs €10/kg?

x+y=30

13x+8y=30

13x+8y=30·10

x+y=10

6.

MULTIPLE SELECT QUESTION

3 mins • 1 pt

What quantities of gold, at €8/gram and silver at €1.70/gram do we need to make 1 kg of an alloy that costs €4.22/gram?

x+y=1000

8x+1,70y=1000 · 4.22

8x+1,70y= 1000

x+y=4.22

7.

MULTIPLE SELECT QUESTION

3 mins • 1 pt

On a farm, there are 12 heads and 34 legs between pigs and chickens. How many pigs are there? How many chickens are there?

4x+2y=34

4x+2y=12

x+y=12

x+y=34

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