Answer:
45 - 36 = 9
Step-by-step explanation:
Write 45 down first, move a ten from 40 to 5, subtract 15 - 6 then 30 - 30
Answer:
30 apples
Step-by-step explanation:
600 is the total number of apples (adding all numbers in the apples*frequency column). Dividing this by 20, the number of boxes, we get 30 apples as the mean number in a box.
The height could be 2 and the width 10 or the height could be 10 and the width could be 2.
Answer:
492.99
Step-by-step explanation: x = amount invested at 12%
y = amount invested at 9%
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x + y = 20287
0.12x = 0.09y + 492.99
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put the system of linear equations into standard form
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x + y = 20287
0.12x - 0.09y = 492.99
