Unit 6 test

Last updated almost 6 years ago

10 questions

Unit 6 test

Last updated almost 6 years ago

10 questions

Question 1

x= - 4 is a solution of the equation

3x-2=-10

3x-8=5x

3(x+6)=42

0.5x+18=21

Question 2

the solution of the equation 3-(4x-3)=6 is x=

Question 3

If - 4x>20, then x >-5

True

False

Question 4

Write the solution set of the inequality 2 x - 5<4(x+1.25)

Question 5

There is/are solution(s) to the equation 2x+y=8

zero

one

two

infinite

Question 6

A shop set the selling price of a certain brand of clothes at 40% more than its cost price. Later in a promotion, it sold the clothes at a 20% discount, and as a result it still made a profit of 15 yuan for each set sold. If we let the cost price be x yuan. Which equation is correct?

x(1+40%)(1-20%)=x+15

x(1-40%)(1-20%)=x+15

x(1+40%)(1+20%)=x+15

x(1+40%)(1-20%)=x-15

Question 7

Solve the system of linear inequalities in one variable .

Question 8

Solve the system of linear equations in two variables.
2x-y=3
3x+2y=8

Question 9

Question 10

10.

There are 420 students in three grades in a school. There are 4 more students in the secondary first grade than the secondary second grade .The number of students in the secondary third grade is 2/3 of the number in the secondary second grade. Write the number of students in the third grade .

Question 1

x= - 4 is a solution of the equation

3x-2=-10

3x-8=5x

3(x+6)=42

0.5x+18=21

Question 2

the solution of the equation 3-(4x-3)=6 is x=

Question 3

If - 4x>20, then x >-5

True

False

Question 4

Write the solution set of the inequality 2 x - 5<4(x+1.25)

Question 5

There is/are solution(s) to the equation 2x+y=8

zero

one

two

infinite

Question 6

A shop set the selling price of a certain brand of clothes at 40% more than its cost price. Later in a promotion, it sold the clothes at a 20% discount, and as a result it still made a profit of 15 yuan for each set sold. If we let the cost price be x yuan. Which equation is correct?

x(1+40%)(1-20%)=x+15

x(1-40%)(1-20%)=x+15

x(1+40%)(1+20%)=x+15

x(1+40%)(1-20%)=x-15

Question 7

Solve the system of linear inequalities in one variable .

Question 8

Solve the system of linear equations in two variables.
2x-y=3
3x+2y=8

Question 9

Question 10

10.

There are 420 students in three grades in a school. There are 4 more students in the secondary first grade than the secondary second grade .The number of students in the secondary third grade is 2/3 of the number in the secondary second grade. Write the number of students in the third grade .

Unit 6 test

Unit 6 test

x= - 4 is a solution of the equation

the solution of the equation 3-(4x-3)=6 is x=

If - 4x>20, then x >-5

Write the solution set of the inequality 2 x - 5<4(x+1.25)

There is/are solution(s) to the equation 2x+y=8

A shop set the selling price of a certain brand of clothes at 40% more than its cost price. Later in a promotion, it sold the clothes at a 20% discount, and as a result it still made a profit of 15 yuan for each set sold. If we let the cost price be x yuan. Which equation is correct?

Solve the system of linear inequalities in one variable .

Solve the system of linear equations in two variables.2x-y=33x+2y=8

There are 420 students in three grades in a school. There are 4 more students in the secondary first grade than the secondary second grade .The number of students in the secondary third grade is 2/3 of the number in the secondary second grade. Write the number of students in the third grade .

x= - 4 is a solution of the equation

the solution of the equation 3-(4x-3)=6 is x=

If - 4x>20, then x >-5

Write the solution set of the inequality 2 x - 5<4(x+1.25)

There is/are solution(s) to the equation 2x+y=8

A shop set the selling price of a certain brand of clothes at 40% more than its cost price. Later in a promotion, it sold the clothes at a 20% discount, and as a result it still made a profit of 15 yuan for each set sold. If we let the cost price be x yuan. Which equation is correct?

Solve the system of linear inequalities in one variable .

Solve the system of linear equations in two variables.2x-y=33x+2y=8

There are 420 students in three grades in a school. There are 4 more students in the secondary first grade than the secondary second grade .The number of students in the secondary third grade is 2/3 of the number in the secondary second grade. Write the number of students in the third grade .

Solve the system of linear equations in two variables.
2x-y=3
3x+2y=8

Solve the system of linear equations in two variables.
2x-y=3
3x+2y=8