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breahk12
06.05.2020 •
Mathematics
Please help me with this
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Ответ:
226.19
Step-by-step explanation:
pi * r^2 = area
The radius = diameter/2 = 6
pi * 6^2 * 2 = area of 2 tortillas
72pi = area of 2 tortillas
That rounds to 226.19
Ответ:
Martin saves $65 the first week.
Leighanne saves $50 each week.
Leighanne is saving at a faster rate than Martin.
Step-by-step explanation:
Given: Leighanne and Martin each begin to add a set amount of money each week.
It means the relationship between number of weeks and saving amount is a linear relationship. the rate of change in linear relation is constant.
From the given table, the rate of change of saving amount per week is given by :-
Thus, Martin add $40 per week to his savings.
From table, in week 1 , the amount = $65
⇒Martin saves $65 the first week.
Now, the initial amount in the beginning=![65-40=\$25](/tpl/images/0474/1752/82c7a.png)
From graph the initial amount in the beginning =$15
Clearly 15<25
therefore, Martin had more money in her account than Leighanne when they started their weekly savings.
The rate of change of Leighanne saving is given by :-
⇒ Leighanne saves $50 each week.
Since, $40< $50
Thus, Leighanne is saving at a faster rate than Martin.