Elefănțelul Jumbo își măsoară porția de iarbă folosind o balanță. Pentru a echilibra balanța folosește 4 corpuri marcate pe care este scris: 10kg, 5kg, 1kg respectiv 1kg. Care este greutatea porției de iarbă a lui Jumbo?

Use this data in the problem below. follow the steps carefully. round to the nearest tenth. lot 3: week 1: 345 week 2: 340 week 3: 400 week 4: 325 step 1. jim enters the data and calculates the average or mean. step 2. jim calculates the deviation from the mean by subtracting the mean from each value. step 3. jim squares each deviation to remove negative signs. step 4. jim sums the squares of each deviation and divides by the count for the variance. step 5. jim takes the square root of the variance to find the standard deviation.

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

Ineed in figuring out this problem.