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Helga [31]
3 years ago
7

Simultaneous equations x^2+3xy=10 x=2y

Mathematics
1 answer:
satela [25.4K]3 years ago
8 0

9514 1404 393

Answer:

  (x, y) = (-2, -1) or (2, 1)

Step-by-step explanation:

Substitute for x in the first equation:

  (2y)^2 +3(2y)y = 10

  10y^2 = 10

  y^2 = 1

  y = ±1

  x = 2y = ±2

Solutions are (x, y) = (-2, -1) or (2, 1).

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I have to find the slope for 4. ASAP please help
Lorico [155]

Given:

The objective is to find the slope of the straight line.

Explanation:

The general equation to find the slope is,

m=\frac{y_2-y_1}{x_2-x_1}

Let's consider two coordinates from the graph.

\begin{gathered} (x_1,y_1)=(0,0) \\ (x_2,y_2)=(-1,5) \end{gathered}

On plugging the values in the equation of slope,

\begin{gathered} m=\frac{5-0}{-1-0} \\ m=-5 \end{gathered}

Hence, the slope of the straight line is -5.

3 0
1 year ago
Lamar sells another broker's $800,000 listing for $785,000 at a commission rate of 6.5%. Lamar has a 40% commission split with h
Serggg [28]
Total commission that Lamar got is:
6.5/100×785,000
=$51,025
Amount that Lamar split with his broker:
40/100×51025
=$20410
Amount that brokerage split
=50/100×20410
$10205

Total amount Lamar received $10205
4 0
3 years ago
Read 2 more answers
Find the percent of change from $40 to $50.
andrezito [222]

Answer:

125%

Step-by-step explanation:

so you are increasing by $10, and $10 is 25% of $40, so the percent change is 125%

3 0
3 years ago
Read 2 more answers
What is the slope of this line?
White raven [17]

Answer:

<em>m</em> = 0

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS

<u>Algebra I</u>

  • Slope Formula: m=\frac{y_2-y_1}{x_2-x_1}

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Find points given from the graph.</em>

Point (0, 2)

Point (7, 2)

<u>Step 2: Find slope </u><em><u>m</u></em>

  1. Substitute:                    m=\frac{2-2}{7-0}
  2. Subtract:                       m=\frac{0}{7}
  3. Divide:                          m=0

Any horizontal line will have a slope of 0.

And we have our final answer!

3 0
3 years ago
In an exam 35 out of 125 students failed. What percentage passed the exam?​
kotegsom [21]

Answer:

28%

Step-by-step explanation:

To find the percentage, you first have to divide:

35 out of 125 Which is 35 ÷ 125 = 0.28

Then you must convert that into a percentage:

0.28 = 28%

Hope this helps you out! : )

4 0
3 years ago
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