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16.05.2020 •
Mathematics
Sarah works at a dry cleaners. If Sarah irons at a constant rate, she can iron 12 small shirts in 18 minutes. Write the linear equation in two variables that represents the number of small shirt(s) Sarah can iron in any given time interval (t).
How many shirts could Sarah iron in 12 minutes?
If t=1 hour, s= .
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Ответ:
Sarah can iron 8 shirts in 12 minutes
If t=1 hour, s=40
Step-by-step explanation:
Sarah irons at a constant rate.
She can iron no. of small t-shirts in 18 minutes = 12
She can iron no. of small t-shirts in 1 minute =![\frac{12}{18}=\frac{2}{3}](/tpl/images/0653/5987/05e14.png)
Rate =![\frac{2}{3}](/tpl/images/0653/5987/d1391.png)
General equation : y=mx
Where m is the slope
Slope = rate of change
Substitute the rate in equation
So,![y =\frac{2}{3} x](/tpl/images/0653/5987/2a5b1.png)
where t represents the minutes
t represents the no. of t shirts
Now we are supposed to find How many shirts could Sarah iron in 12 minutes
Substitute t = 12
Sarah can iron 8 shirts in 12 minutes
If t=1 hour, s= ______.
1 hour = 60 minutes
So,If t=1 hour, s=40
Ответ: