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Svet_ta [14]
3 years ago
14

3х - 2y = 12 12x – бу = 9 Need help

Mathematics
2 answers:
emmasim [6.3K]3 years ago
7 0

Answer:

1.  x=4+2y/3

2. x=3/4+y/2

Step-by-step explanation:

hope this helped :))

ra1l [238]3 years ago
4 0

Answer:

See in attachment and Mark as brainleist please .☺☺☺☺

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Reason abstractly. Are all horizontal lines parallel? Use slope<br> explain how you know.
ohaa [14]

Answer:

All horizontal lines are NOT parallel.

Step-by-step explanation:

We learned that lines go on forever.  

If one line is slightly slanted, and the other line is completely straight,  these lines are not parallel, as they will meet at some point.

Hope this helped :)

6 0
3 years ago
Evaluate the expression <br> 5.4+ab, if a = 4 and b = 8
dsp73

Answer:

37.4

Step-by-step explanation:

a = 4 and b = 8

change the equation

5.4 + (4) (8)

use P.E.M.D.A.S. and multiply

4*8 = 32

add

5.4 + 32 = 37.4

7 0
3 years ago
Find d for the arithmetic series with S17=-170 and a1=2
Irina18 [472]
So, we know the sum of the first 17 terms is -170, thus S₁₇ = -170, and we also know the first term is 2, well

\bf \textit{ sum of a finite arithmetic sequence}\\\\&#10;S_n=\cfrac{n(a_1+a_n)}{2}\qquad &#10;\begin{cases}&#10;n=n^{th}\ term\\&#10;a_1=\textit{first term's value}\\&#10;----------\\&#10;n=17\\&#10;S_{17}=-170\\&#10;a_1=2&#10;\end{cases}&#10;\\\\\\&#10;-170=\cfrac{17(2+a_{17})}{2}\implies \cfrac{-170}{17}=\cfrac{(2+a_{17})}{2}&#10;\\\\\\&#10;-10=\cfrac{(2+a_{17})}{2}\implies -20=2+a_{17}\implies -22=a_{17}

well, since the 17th term is that much, let's check what "d" is then anyway,

\bf n^{th}\textit{ term of an arithmetic sequence}\\\\&#10;a_n=a_1+(n-1)d\qquad &#10;\begin{cases}&#10;n=n^{th}\ term\\&#10;a_1=\textit{first term's value}\\&#10;d=\textit{common difference}\\&#10;----------\\&#10;n=17\\&#10;a_{17}=-22\\&#10;a_1=2&#10;\end{cases}&#10;\\\\\\&#10;-22=2+(17-1)d\implies -22=2+16d\implies -24=16d&#10;\\\\\\&#10;\cfrac{-24}{16}=d\implies -\cfrac{3}{2}=d
6 0
3 years ago
The area of a triangle is comtinous or discrete
Colt1911 [192]

Answer:

Continuous

Step-by-step explanation:

The area of a triangle is continuous. It can be any measure of fraction or decimal depending on the side lengths. It has no restrictions to be only whole  numbers or a specific set of numbers.

3 0
3 years ago
Mr. Castillo earns 270,920.64 a year. What is his monthly salary?
lozanna [386]

We need to divide for this. Since there are 12 months in a year, we divide his yearly salary by 12.

270,920.64÷12=22,576.72


So, Mr.Castillo's monthly salary is $22,576.72.

8 0
3 years ago
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