Mindy, Kristie and Amy are trying to solve this equation: 2x + 4(x + 1) - 3 = 15.
Mindy says the first step is to combine 2x and -3.
Kristie says the first step is to add 3 to both sides.
Amy says the first step is to distribute and multiply both terms in the parentheses by 4. Who is correct?
A. Mindy
B. Kristie
C. Amy
D. no one
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
hold on i wanna try an figure it out
OpenStudy (anonymous):
C. like the saying PEMDSA
hartnn (hartnn):
YES
OpenStudy (anonymous):
C. is sorrect following the order of operation PEMDAS as you stated
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
THanks!! :)
hartnn (hartnn):
welcome ^_^
OpenStudy (anonymous):
The girls are working on another problem together. They are trying to solve the equation: 2(x + 5) - 4 = 36
Mindy says the answer is x = 15.
Kristie says the answer is x = 17.5
Amy says the answer is x = 13
Who is correct?
A. Mindy
B. Kristie
C. Amy
D. no one
hartnn (hartnn):
2(x + 5)=?
OpenStudy (anonymous):
2x+ 10 =12x?
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
hartnn (hartnn):
no, its just 2x+10
can't write 10 as 10 x
so now what is
2x+10-4
hartnn (hartnn):
combine like terms, 10 and -4 are like, 2x is different
OpenStudy (anonymous):
6 an d 2x
hartnn (hartnn):
so u get
2x+6 =36
know what next step will be ?
OpenStudy (anonymous):
getting rid of 2 from x?
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
hartnn (hartnn):
getting rid of 6
by subtracting 6 from both sides
OpenStudy (anonymous):
-4?
OpenStudy (anonymous):
or 4
hartnn (hartnn):
2x+6-6 = 36-6
what is 6-6 =? and 36-6= ?
OpenStudy (anonymous):
0 and 30
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
hartnn (hartnn):
so u have 2x=30
now get rid of 2
by ?
OpenStudy (anonymous):
taking away 2 from both sides/
hartnn (hartnn):
dividing 2 , if that what u meant
x=30/2 = ?
OpenStudy (anonymous):
my bad dividing?
OpenStudy (anonymous):
yeah
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
30/2=15 2/2=0
OpenStudy (anonymous):
A.?
hartnn (hartnn):
2/2 = 1
so u have
1x=15
that is x=15
hartnn (hartnn):
yes, A
hartnn (hartnn):
understood the steps ?
Still Need Help?
Join the QuestionCove community and study together with friends!