Answer:
14
Step-by-step explanation:
Factors of 28: 1, 2, 4, 7, 14, 28
Factors of 42: 1, 2, 3, 6, 7, 14, 21, 42
So, the GCF is 14
a. Why is her conclusion not valid?
Answer:
She painted her sister's nails with Brand B, not her own nails.
Step-by-step explanation:
All parts to an experiment must be the same except one thing. She is testing different nail polishes so that's what needs to be different. By painting her hand with one nail polish and her sister's with the other, she is changing a second variable in the experiment making it invalid.
Which simplified expression represents the total number of red and white carnation plants in a section with y sprinklers?
5y2 + 18y +77
5y4 + 14y + 81
6y2 + 14y + 81
6y2 + 18y + 77
Answer:
C.
Step-by-step explanation:
We have been given that the expression represents number of red carnation plants and expression
represents number of white carnation plants in a section with y sprinklers in a green house.
To find the simplified expression that represents the total number of red and white carnation plants in a section with y sprinklers, we will add our both expressions.
Upon distributing y on 1st expression we will get,
Upon expanding the perfect square we will get,
Now, we will combine like terms.
Therefore, option C is the correct choice.