Asked by reina

-2(3y-6)+4(5y-8)=92
-6y+12+20y-32=92
-6y -6y
__________________
12+14y-32=92
-12 -12
_______________
14y-44=92
+44 +44
_______________
14y=136=9.7
Answered by reina
5g+18g-7g+4g=8
2g+18=8
-18 -18
2g=-10
=-5
Answered by reina
roberts father is 5 years older than 3 times roberts age let robert age be denoted by r and let roberts father age be denoted by F write an equation that relates roberts age and his fathers age?
Answered by reina
the citation sovereign is a small jet that can carry up to 2650 pounds. the number of passengers p and the number of suitcases c that the airplane can carry are estimated by the equation 180p+60c=2650. if 10 people board the aircraft how many suitcases can the airplane carry?



180p+60c=2650
1800+60c=2650
-1800 -1800
60c=850
=14.16
Answered by Reiny
This is how I would have expected my students to do this
-2(3y-6)+4(5y-8)=92
-6y + 12 + 20y - 32 = 92
14y - 20 = 92
14y = 92 + 20
14y = 112
y = 112/14
y = 8


F = 3r+5
(just a translation of the English to Math)

for you last problem isn't p = 10 ?
So plug it in and solve the equation
180(10) + 60c = 2650
etc

5g+18g-7g+4g=8
20g = 8
g = 8/20
g = 2/5
Answered by reina
im sorry

5g+18-7g+4g=8
Answered by reina
i wrote it wrong
Answered by reina
and
180(10) + 60c = 2650

yea i did

and that got me
1800+60c=2650
-1800 -1800
60c=850
=14.16
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