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nordsb [41]
3 years ago
6

 2x- 3y=9   5x+3y=12   How would i solve this? I dont understand this and i really need help with it!Also I have to graph the an

wsers afterward on a graph, so i really need the help. I appreciate it:)

Mathematics
1 answer:
dedylja [7]3 years ago
7 0
\begin{cases} 2x- 3y=9 \\5x+3y=12 \end{cases}\\ + \ \ ------- \\ 7x=21 \ \ /: 7\\ \\x=\frac{21}{3}\\ \\ x=3 \\ \\2x- 3y=9

2*3-3y=9\\ \\6-3y =9\\ \\-3y=9-6\\ \\-3y=3 \ \ / :(-3)\\ \\x=-1\\ \\ \begin{cases} x=3\\y= -1 \end{cases}

graph\\ \\\begin{cases} 2x- 3y=9 \\5x+3y=12 \end{cases}\\ \\ \begin{cases} - 3y=-2x+9\ \ /:(-3) \\ 3y=-5x+12 \ \ /:3 \end{cases}\\ \\ \begin{cases} y= \frac{2}{3}x-3 \\ y=-\frac{5}{3}x+4 \end{cases}


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1.688 × 10⁴ = write in standard format​
Neporo4naja [7]

Answer

16880

Step-by-step explanation:

10x10x10x10=10,000

1.688x10,000=16880

hope that helps

7 0
3 years ago
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Please answer #1 for me only ! What is my Y for #1 , don't forget to graph !​
mart [117]
The table and the graph is shown in the following picture

7 0
3 years ago
Please help me it’s due soon-
lesya [120]

Answer:

B-16

Step-by-step explanation:

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3 0
3 years ago
Mushimu17 has to answer this question​
Vaselesa [24]
What’s the question tho lol
3 0
3 years ago
See Attached picture.
agasfer [191]
We use the Work formula to solve for the unknown in the problem which is W = F x d. First, we solve for the Net Force acting on the car. The Net Force is the summation of all forces acting on the object. For this case, we assume that Friction Force is negligible thus the Net Force is equal to:

F = mgsinα in terms of SI units and in terms of english units we have F = m(g/g₀)(sin α) where g₀ is the proportionality factor, 32.174 ft lb-m / lb-f s²

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W = Fd = 519.78 lb (400 ft) = 207912 ft - lb or 20800 ft-lb
5 0
3 years ago
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