A student attempted to generate an equivalent expression using the distributive property, as shown below:
2(x + 5) = 2x + 5
What was the mistake made?
1. 2 was not multiplied by x
2. 2 was not multiplied by 5
3. Incorrect sign was used for the first term
4. Incorrect sign was used for the second term
2. 2 was not multiplied by 5
The answer should have been 2x+10
Step-by-step explanation:
ratio of his age to his son’s age is 6:1. Four years ago these
ratios were 11 : 14 and 11:1respectively. The ratio of the age of the grandfather to that of the grandson 12 years from
now will be:
as