troyjbabyjohnson
23.11.2019 •
Mathematics
The sum of two numbers, x and y, is 142. their
could be used to find the numbers?
nbers,
and y, is 142. their difference is 14. which system of equations
x + 142 = y
+
18.64
x + y = 142
y = 14
b.
- 14 = y
c
x - y = 142
x + y = 14
d.
14
x=142 + y
y = 14- x
+
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Ответ:
Step-by-step explanation:
The speed of the car is 100/5 = 20 m/sec (speed = distance/time)
1m/sec is 2.237 m/hr. Using the conversion factor the speed of the car is 44.74 miles/hr.