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snow_lady [41]
3 years ago
9

HI GTTEEREDREDTEDTHEERDEEDTRTFTRTHHEERETETEUU7UUR

Mathematics
2 answers:
zmey [24]3 years ago
5 0
Hsiisfneowpmxfieowmw
KengaRu [80]3 years ago
3 0
Hi. Brainliest? vend.mnvlmdcnvmldcnvlmdcnvlm
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Someone please solve this 3n+9n=-2(7-4n)-(1+n)
Andru [333]

Answer:

<h2>n= -3</h2>

Step-by-step explanation:

3n+9n=-2(7-4n)-(1+n)\\\\\mathrm{Add\:similar\:elements:}\:3n+9n=12n\\\\12n=-2\left(7-4n\right)-\left(1+n\right)\\\\\mathrm{Expand\:}-2\left(7-4n\right)-\left(1+n\right):\quad 7n-15\\\\12n=7n-15\\\\\mathrm{Subtract\:}7n\mathrm{\:from\:both\:sides}\\\\12n-7n=7n-15-7n\\\\Simplify\\\\5n=-15\\\\\mathrm{Divide\:both\:sides\:by\:}5\\\\\frac{5n}{5}=\frac{-15}{5}\\\\Simplify\\\\n=-3

6 0
4 years ago
Read 2 more answers
(3b2 + 4b) + (b2+ 7b)=?<br><br>A.4b^2 + 11b<br>B.4b + 11b^2<br>C.4b^2 + 10b<br>D.3b^2 + 11b​
Marta_Voda [28]

Answer:

The correct answer is C. 4b^2+10b

8 0
4 years ago
The mean temperature for the first 7 days in January was 4 °C.
Ronch [10]

Answer:

Total temperatures for 8 days is 15.

The 8-day average (mean) temperature is 15/8 or 1.875 degrees.

Step-by-step explanation:

yeah

5 0
3 years ago
Type the expression that results from the following series of steps:
zzz [600]

Answer:

3y-15

Step-by-step explanation:

(y-7)3=3y-21

3y-21+6=3y-15

4 0
2 years ago
The system shown is _____.<br><br> equivalent<br> independent<br> inconsistent
Setler [38]

By definition:

  • If a system has at least one solution, it's said to be consistent.
  • If a system has exactly one solution, it's independent.
  • If a system has infinite solutions, it's dependent
  • If a system has no solutions, it's inconsistent.

Your system has exactly one solution (the two lines represent the two equations, and the point where they meet is the solution of the system), and so it is consistent, and in particular independent.

6 0
4 years ago
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