Posted by **Keila ** on Tuesday, September 28, 2010 at 6:42pm.

The sum of 14 and twice a number y is equal to 78 ?

- 9th grade MATH -
**Alex**, Tuesday, September 28, 2010 at 6:59pm
14 + 2y = 78

78 - 14 = 64

2y = 64

64 / 2 = 32

y = 32

- 9th grade MATH -
**Keila **, Tuesday, September 28, 2010 at 7:50pm
Thanks

- 9th grade MATH -
**sydney**, Wednesday, September 29, 2010 at 8:28pm
14+2y=78

-14 -14

__________

2y=64

_ _

2 2

y=32

- 9th grade MATH -
**Anonymous**, Thursday, October 14, 2010 at 6:53pm
a sales person drove 215 miles frpm new york to washington DC in 4.5 hours what is her average speed?

- 9th grade MATH -
**Navdeep**, Sunday, October 31, 2010 at 7:31pm
Dfrom point a to point b=215miles

VELOCITYaverage=change in distance/change in time

=215miles/4.5hrs

Approx.=47.8 or 48mph

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