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Veseljchak [2.6K]
3 years ago
7

Could you help me with this equation:

%20%3D%200" id="TexFormula1" title="x^{3} + 5x^{2} - 18x + 3 = 0" alt="x^{3} + 5x^{2} - 18x + 3 = 0" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
lord [1]3 years ago
3 0

if you want to solve it without a graph you're going to need to use the cubic formula, I'm unsure how else to solve it

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4x + y< 2
bulgar [2K]

The two inequalities can be rewritten as

\begin{cases}y-2\end{cases}

The solution is composed by every point below the graph of the line y=-4x+2, and above the horizontal line y=-2

To draw the line y=-4x+2 we can build a little table (only 2 points are required):

\begin{array}{c|c}x&y\\0&2\\1&-2\end{array}

So, if you draw the points (0,2) and (1, -2) and connect them, you'll have your line.

To draw the line y=-2, simply pick any point with y coordinate -2, for example (0, -2), and draw a horizontal line.

Choose the above/below areas as specified above to solve the system.

5 0
3 years ago
Use the coordinates to find the perimeter of the rectangle. D(1,2), E(1,7), F(4,7), G(4,2) *
JulsSmile [24]

Answer:

  16

Step-by-step explanation:

DE is the vertical line x=1. It extends between y=2 and y=7, a distance of 5 units.

EF is the horizontal line y=7. It extends from x=1 to x=4, a distance of 3 units.

Then the perimeter of half the rectangle is 5+3 = 8 units.

The perimeter of the rectangle is 2·8 = 16 units.

7 0
3 years ago
Which is the slope of the line y= -3x + 2?​
zavuch27 [327]

Answer:

slope is m

y = mx + b is your standard formula

slope = -3

Step-by-step explanation:

7 0
3 years ago
Solve the following problems<br><br>Answer:<br><br><br><br><br><br>Explanatoin:<br><br><br>​
NemiM [27]
Answer:
1) 121.7
2) 131.8
3) 106.2
4) 88.5
5) 90.3
6) 110.2

Explanation:
Don't worry about the decimals when adding since there all aligned just add like usual, straight through.
8 0
3 years ago
How do you find the whole number from the percentage increase?<br><br><br>(Give an example)
hjlf
Say the percentage increase is 25%. If you have the whole number of 30 then you would multiply 30 by .25. You should therefore get 7.5 once both are multiplied. That means you should add 7.5 to 30, and your final answer will be 37.5.
4 0
3 years ago
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