The number of invitations that Imogen started with, i, can be found by adding the number of invitations she sent out, 19, to the number she was left with, 11:
i = 19 + 11 = 30
Therefore, the value of i is 30.
Imogen bought i number of invitations to send out for her party. After she sent out 19, she was left with 11. What is the value of i?
8
11
19
30
3 answers
Liliana solved the equation below. When she tried to verify her answer, she realized she made an error.
One-third (x + 18) = 7
One-third x + 6 = 7
One-third x + 6 minus 6 = 7 + 6
One-third x = 1
x = 3
Which correction should Liliana make?
The first step should be One-third x + 54 = 7.
The second step should be One-third x + 6 minus 6 = 7 minus 6.
The third step should be One-third x = 13.
The final step should be x = one-third.
One-third (x + 18) = 7
One-third x + 6 = 7
One-third x + 6 minus 6 = 7 + 6
One-third x = 1
x = 3
Which correction should Liliana make?
The first step should be One-third x + 54 = 7.
The second step should be One-third x + 6 minus 6 = 7 minus 6.
The third step should be One-third x = 13.
The final step should be x = one-third.
The correction Liliana should make is in the first step.
The correct first step should be:
One-third x + 6 = 7 - 6x
To isolate the variable on one side, Liliana needs to subtract 6 from both sides, not add 54 to the right side.
The correct second step is:
One-third x = 1 - 6x
From here, Liliana should continue solving for x.
Therefore, the correction Liliana should make is the first step should be One-third x + 6 = 7 - 6x.
The correct first step should be:
One-third x + 6 = 7 - 6x
To isolate the variable on one side, Liliana needs to subtract 6 from both sides, not add 54 to the right side.
The correct second step is:
One-third x = 1 - 6x
From here, Liliana should continue solving for x.
Therefore, the correction Liliana should make is the first step should be One-third x + 6 = 7 - 6x.
1 answer