Give an example of an equation and an example of an expression. Use a variable in each example.
1 answer:
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There were 980 student desks originally.
Step-by-step explanation:
Number of desks purchased = 295
Desks bought for teacher = 50
Desks for students = No. of desks purchased - desks bought for teachers
Desks for students = 295 - 50 = 245
This is 1/4 of number of original student desks.
Let x be the number of original student desks.
According to statement;
Multiplying both sides by 4;
There were 980 student desks originally.
Keywords: subtraction, multiplication
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Answer:
(-1, -2) will be the solution.
Step-by-step explanation:
System of equations has been given as,
y = 3x + 1 ---------(1)
Input-output value table for the given line will be,
x -2 -1 0 1
y -5 -2 1 4
y = -x - 3 ----------(2)
Input-output value table for the given line will be,
x -2 -1 0 1
y -1 -2 -3 -4
By plotting the given coordinates we can draw the straight lines.
And the point of intersection (common point) of these lines will be the solution of the given system of equations.
Hence, (-1, -2) will be the solution.
