Answer:
6.8(6.7 – 7.2) – 2(4.6 + 1.2) =-15
Step-by-step explanation:
Try proportions. It can help since it's asking for the "cost". Hope this helps! :)
He is not making a valid inference because he is assuming the student populations interest based on a small part/ group of the student population, his class.
1. when you see 4(x² - 1), then you have to multiply 4 with everything in the bracket. keep in mind that you always have to be cautious of the sign whether it is a positive or a negative.
positive ×/÷ positive = positive
negative ×/÷ negative = positive
positive ×/÷ negative = negative
negative ×/÷ positive = negative
^ you have to remember this.
2. only like terms (same alphabet) can plus or minus each other.
3. simplify by taking out the common factor and placing it outside the bracket.
Answer:
65/28 or 2 9/28
Step-by-step explanation:
Hope this helps!