find the range of allowable values based on an expected mass of 250 grams for which values are allowed to vary by 5%​

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Ariel is working at a meat packing plant for 5 nights a week. her regular wage is $11 an hour. she earns tine and a half for any overtime hours. this week she worked 9 hours of over time .how much will ariel earn for overtime this week ?

Jude is making cement for a driveway. the instructions show the amount of each ingredient to make 1 batch of cement. complete each statement to adjust the ingredients for each new situation if jude uses these instructions.