Explain why you should record a 1 in the tens column when you regroup in an addition problem

Plzzz i beg u so much asap ! what is the slope of this line? enter your answer in the box.

Jasmine wants to eat at 8: 00pm her meal takes 65mins to cook what time does she need to put the meal in the oven

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of