Mathematics
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OpenStudy (anonymous):
Simplify 11(2x + 3).
can someone help me here?
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OpenStudy (anonymous):
Ummmm my answers that I got are
11x + 5
22x + 3
22x + 33
OpenStudy (mathstudent55):
Multiply 11 by each term inside the parentheses.
OpenStudy (anonymous):
The answer is 22x + 33
OpenStudy (mathstudent55):
11(2x + 3) = 11*2x + 11*3 = 22x + 33.
OpenStudy (anonymous):
so it would be 11x 2 or 11x3?
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OpenStudy (anonymous):
getting a note book.
OpenStudy (anonymous):
11*2x + 11*3
OpenStudy (anonymous):
thanks!
OpenStudy (anonymous):
so I have 11x2=22 and 11x3=33
OpenStudy (anonymous):
so my answer would be 22x+33?
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OpenStudy (mathstudent55):
You have 11 * 2x = 22x and 11 * 3 = 33.
When you put it together you end up with 22x + 33.
OpenStudy (anonymous):
thanks a lot!
If I need more help may I ask u for the help?
OpenStudy (anonymous):
Simplify 8(3 - 2x).
24x - 16
16x - 24
24 - 16x
I believe the right answer would be number 2.
OpenStudy (mathstudent55):
Multiply 8 * 3. What do you get?
OpenStudy (anonymous):
24
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OpenStudy (mathstudent55):
Good. Notice you wrote correctly 24 (positive 24) and not -24. Notice also that B. has
-24. B cannot be the answer.
OpenStudy (mathstudent55):
What is 8 * -2x?
OpenStudy (anonymous):
-16 or 16.
OpenStudy (mathstudent55):
Positive times negative is negative, so 8 * (-2x) = -16x.
Now look in the choices, which choice has 24 and -16x?
OpenStudy (anonymous):
so it would be 24 - -16?
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OpenStudy (anonymous):
ohhh got ya! thanks!
OpenStudy (anonymous):
24x - 16
16x - 24
24 - 16x
OpenStudy (anonymous):
those are my choices for this quiz. I think it would be the last one.
OpenStudy (mathstudent55):
Yes, it's the last one.
OpenStudy (anonymous):
now this one I was having troubles with too.
Simplify 81.56 + n - 2.55.
79.10 - n
79.01 + n
81.56 - 2.55n
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OpenStudy (anonymous):
I think I would do it 91.56 - 2.55?
OpenStudy (anonymous):
* 81.56
OpenStudy (mathstudent55):
Rewrite
81.56 + n - 2.55
as
81.56 - 2.55 + n
and combine the numbers together.
OpenStudy (anonymous):
79.01 + n
that's what I get.
OpenStudy (mathstudent55):
Pls post new problems as new posts.
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OpenStudy (mathstudent55):
correct
OpenStudy (anonymous):
okay will do