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Ray Of Light [21]
3 years ago
9

3a + 21 = 7 - 4a what's the answer

Mathematics
2 answers:
denis23 [38]3 years ago
8 0
After simplifying a= -2
scoundrel [369]3 years ago
5 0
3a + 21 = 7 - 4a

3a + 4a = 7 - 21

7 a = -14

a = - 14 / 7

a = - 2

hope this helps!
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17 + x =31 <br> i need help
Gelneren [198K]

Answer:

x= 14

Step-by-step explanation:

First (and only) we subtract 17 from both sides :

17 + x - 17 = 31 - 17

x = 31 - 17

x = 14

Hope this helped and have a good day

4 0
1 year ago
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The flight path of a plane is a straight line from city J J to city K K. The roads from city J J to city K K take the long way a
Vika [28.1K]

Answer:

58.1 degrees

Step-by-step explanation:

Given the following

JK = 9.4miles (towards south) negative y axis

If the move 15.1 miles towards east (that will be towards the positive x axis)

Using the SOH CAH TOA identity

opposite= 15.1 miles(side facing m<J)

adjacent= JK = 9.4miles

tan theta = opposite/adjacent

tan m<J = 15.1/9.4

tan m<J = 1.6063

m<J = arctan (1.6063)

m<J = 58.09 degrees

Hence the measure of m<J to the nearest tenth is 58.1 degrees

4 0
2 years ago
How many students tired out for the volleyball team is this a statistical or no
vodomira [7]

That question is not a statistical question since there will be only one answer. If it were to be statistical it would have multiple answers an example of that type of question would be, Why did you decide to try out for the volleyball team? This is statistical because some could say they joined for fun, credits, to do something active, etc.. there would be multiple answers. Your question, How many students tried out for the volleyball team isn't statistical since it will have one answer such as, 26 students, 15 student, 2 students, etc...

Hope this helped!

4 0
3 years ago
If the common difference in an article is -3 and the first term is 7 what is the 14th term?
Wittaler [7]
I got A, -32, but it has been awhile since I have learned this in my math class. You might want to wait for someone else to verify this answer. 
3 0
3 years ago
Read 2 more answers
Zoe is 16 years old. Her brother, Luke, is 3 years more than half her age. Write a numerical expression for Luke's age.
olga nikolaevna [1]

Answer:

<u><em>16 : 2 + 3 </em></u>  (remember pemdas)

Step-by-step explanation:

Zoe is 16 years old. Her brother, Luke, is 3 years more than half her age. Write a numerical expression for Luke's age.

16 : 2 + 3 = 11

8 0
2 years ago
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