D. because PQR and XYZ are not congruent
Answer:
6 2/3 minutes
Step-by-step explanation:
Their rates in "jobs per hour" are ...
(60 min/h)/(15 min/job) = 4 jobs/h
and
(60 min/h)/(12 min/job) = 5 jobs/h
So, their combined rate is ...
(4 jobs/h) + (5 jobs/h) = 9 jobs/h
The time required (in minutes) is ...
(60 min/h)/(9 jobs/h) = (60/9) min = 6 2/3 min
Working together, it will take them 6 2/3 minutes.
Answer:
.......................
Step-by-step explanation:
Hey!
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10x = 10
To find the constant of proportionality just take the number and divide it by 1. 10x/1 = 10. The constant of proportionality can also be found by finding the slope of an expression or graph. In this case the slope is 10.
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Thus, 10 is the constant of proportionality!
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Hope This Helped! Good Luck!