Mathematics
14 Online
OpenStudy (anonymous):
Rewrite the expression without using grouping symbols.
7(x - 19)
7 + 7 • 19
7x - 26
7x - 19
7x - 7 • 19
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (the_fizicx99):
D
OpenStudy (anonymous):
Thanks! I have another can you help?
OpenStudy (the_fizicx99):
Its 7*x and 7*-19
So 7x - 7*19
OpenStudy (anonymous):
Thanks so much
OpenStudy (the_fizicx99):
Yw
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
Could help me with another one?
OpenStudy (the_fizicx99):
sure
OpenStudy (anonymous):
Rewrite the expression using grouping symbols.
29x - 13x
x(13 -29)
x(29 -13)
13(x - 29)
13(x + 29)
OpenStudy (the_fizicx99):
C
x*29 - x*13
OpenStudy (anonymous):
Thanks so much!!
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
I have two more I need help with.
OpenStudy (the_fizicx99):
Kay
OpenStudy (anonymous):
Thank you so much
OpenStudy (anonymous):
Which shows how to use the distributive property to evaluate 6 • 78?
6 • (70 - 8)
6 • (70 + 2)
6 • (70 + 8)
6 • (70 - 2)
OpenStudy (the_fizicx99):
Which one do you think it is
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (the_fizicx99):
Can't keep giving out answer lol
OpenStudy (anonymous):
I think its B
OpenStudy (the_fizicx99):
Distributive is when you multiply everything in the parenthesis:
Ex: 5(x + 5)
5*x + 5*5
5x + 25
OpenStudy (anonymous):
Ok what next
OpenStudy (the_fizicx99):
But see that I used x and 5, so they weren't like terms.
Ex: 5(10 + 5)
5(15)
5*15 = 75
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (the_fizicx99):
Soo, look at your options
70 + 8 = ??
OpenStudy (anonymous):
70 + 8 = 78
OpenStudy (the_fizicx99):
You can even do its separately, 5 * 10 = 50 5*5 = 25
25 + 50 = 75
OpenStudy (the_fizicx99):
So, which one do you think it is now.
OpenStudy (anonymous):
hmmmm
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
I may sound dumb, but I think it's D now.
OpenStudy (the_fizicx99):
xD not D, 70 - 2 = 68
6 * 68 isn't what they're asking you.
OpenStudy (anonymous):
I am kinda of a blonde, I don't understand math too well!
OpenStudy (anonymous):
6 • 68 = 408
OpenStudy (the_fizicx99):
xD no worries, I have patience. Soo 70 + 8 = 78 * 6
They're asking for 6 * 78
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
Ohhhh ok
OpenStudy (anonymous):
6 • 78 = 468
OpenStudy (the_fizicx99):
Which option do you think its now. Btw they're not asking for the answer, just the set up
OpenStudy (anonymous):
It's between A & C
OpenStudy (the_fizicx99):
Why would you subtract 8 from 70, that would be 62 * 6 .. nope
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
right...
OpenStudy (anonymous):
It's C
OpenStudy (the_fizicx99):
Yup, could you explain why you think its C? Cx
OpenStudy (anonymous):
Sorry my internet connection went out
OpenStudy (anonymous):
I think it's C because 70+8 = 78 and then that's where I end up at 6 • 78
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
Am I right?
OpenStudy (the_fizicx99):
Yes