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3 years ago

4x−2y=8 2x+y=2 how many solution does this equation have ?

SAT

2 answers:

suter [353]3 years ago

7 0

Answer:y

y=2x−4

Explanation:Solve for the first variable in one of the equations, then substitute the result into the other equation.

ad-work [718]3 years ago

3 0

Answer:

Exactly one

Explanation:

I tried it on khan

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Which function is shown in the graph? mc001-1. Jpg mc001-2. Jpg mc001-3. Jpg mc001-4. Jpg.

Elan Coil [88]

The function shown in the graph in the image attached below is $y=|x-4|$ .

<u>Given the following data:</u>

Points on the x-axis = (0, 4)

Points on the y-axis = (0, 4)

First of all, we would determine the slope of this line by using the following formula;

$Slope. \;m = \frac{Change \; in \; y \;axis}{Change \; in \; x \;axis} \\\\Slope. \;m = \frac{y_2 - y_1}{x_2 - x_1}$

Substituting the points into the formula, we have;

$Slope. \;m = \frac{4 - 0}{4 - 0}\\\\Slope. \;m = \frac{4}{4}\\\\$

Slope, m = 1

Next, we would find the intercept:

Let x = 0, for the y-intercept.

$y=mx+b\\\\4=1(0)+b$

b = 4

Therefore, the function shown in the graph in the image attached below is $y=|x-4|$

Read more on slope here: brainly.com/question/3493733

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2 years ago

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What is the kinetic energy of a ball with a mass of 0. 5 kg and a velocity of 10 m/s? (formula:) 25 j 5 j 50 j 100 j.

disa [49]

Answer:

given,

mass(m)=0.5 kg

velocity(v)=10m/s

we know

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=1/2 *0.5*(10)^2

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3 years ago

Given the function f(x) = 3(x – 2)2 + 4 with a restricted domain of x ≥ 2, which of the following represents f–1(x)?.

Debora [2.8K]

The inverse of the function is $f^{-1}x= \sqrt{\frac{x-4}{3} } + 2$

<h3 /><h3>Domain and Range of functions</h3>

Given the function

$f(x) = 3(x - 2)^2 + 4$

To get the inverse, you will follow the same step as shown:

Rewrite the equation to have:

$y= 3(x - 2)^2 + 4$

Replace x with y

$x = 3(y - 2)^2 + 4$

<h3>Make y the subject of the formula</h3>

$x = 3(y - 2)^2 + 4\\x-4=3(y - 2)^2\\\frac{x-4}{3} = (y-2)^2\\ y-2=\sqrt{\frac{x-4}{3} } \\y = \sqrt{\frac{x-4}{3} } + 2$

Hence the inverse of the function is $f^{-1}x= \sqrt{\frac{x-4}{3} } + 2$

Learn more on inverse of a function here: brainly.com/question/2873333

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3 years ago

Help me<br><br>I don't the question

ozzi

Answer:

To imply that only men were on a board the Mayflower.

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2 years ago

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A waitress sold 20 ribeye steak dinners and 12 grilled salmon dinners, totaling $559.11 on a particular day. Another day she s

Alexus [3.1K]

Answer:

Ribeye steak dinner ≈ $16.01
Grilled salmon dinner ≈ $19.91

Explanation:

<em>Number of ribeye steak dinners sold = x</em>
<em>Number of grilled salmon dinners sold = y</em>

Create two equations showing the amount sold and earned each day:

$\left \{ {{20x+12y=559.11} \atop {29x+6y=583.72}} \right.$

Solve the system of equations:

$\left \{ {{20x+12y=559.11} \atop {29x+6y=583.72}} \right.\\\\=\left \{ {{20x+12y=559.11} \atop {29(2)x+6(2)y=583.72(2)}} \right.\\\\=\left \{ {{20x+12y=559.11} \atop {58x+12y=1167.44}} \right.\\\\(20-58)x+(12-12)y=559.11-1167.44\\\\-38x=-608.33\\\\x=\frac{-608.33}{-38} =16.01\\\\20x+12y=559.11\\20(16.01)+12y=559.11\\12y=559.11-20(16.01)\\12y=238.91\\y=19.91$

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3 years ago

4x−2y=8 2x+y=2 ​ how many solution does this equation have ?

4x−2y=8 2x+y=2 how many solution does this equation have ?