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sergij07 [2.7K]

2 years ago

12

Solve this question using elimination

1 answer:

Lorico [155]2 years ago

6 0

$\left\{\begin{array}{ccc}y=2x-5\\y=2x+7&&\text{multiply both sides by (-1)}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}y=2x-5\\-y=-2x-7\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad0=-12\qquad\text{FALSE}\\\\Answer:\ \boxed{NO\ SOLUTION}$

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Which set of numbers is included in the solution set of 4-3x<-2

iren [92.7K]

$4 - 3x < - 2 \\ - 3x < - 2 - 4 \\ - 3x < - 6 \\ - x < - 2 \\ x > 2$

The answer is A (2.5, 8, 15), since these integers are greater than 2.

Hope this helps. - M

3 0

3 years ago

Algebra 2 Math question Grade 11

Paha777 [63]

Answer:

$\displaystyle y=\frac{4}{5}x+\frac{13}{5}$

Step-by-step explanation:

The equation of the line in slope-intercept form is:

y=mx+b

Where m the slope of the line and b the y-intercept.

When two points are given, it's convenient to calculate the slope first.

Suppose we know the line passes through points A(x1,y1) and B(x2,y2). The slope can be calculated with the equation:

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

The points are (3,5) and (-2,1):

$\displaystyle m=\frac{1-5}{-2-3}=\frac{4}{5}$

The equation is now:

$\displaystyle y=\frac{4}{5}x+b$

To calculate b, we use any of the given points and solve for b. Use (3,5):

$\displaystyle 5=\frac{4}{5}3+b$

Operate:

$\displaystyle 5=\frac{12}{5}+b$

Solve:

$\displaystyle b=5-\frac{12}{5}=\frac{13}{5}$

The required equation of the line is:

$\boxed{\displaystyle y=\frac{4}{5}x+\frac{13}{5}}$

3 0

3 years ago

WLL GIVE BRAINLIST PLEASE help... i sincerely don't even know where to begin here.

Harman [31]

Answer:

y = 5

Step-by-step explanation:

WY is the perpendicular bisector of XZ and so divides ΔWXZ into 2 congruent triangles ΔWXY and ΔWZY

Hence WZ = WX ← corresponding sides, thus

5y - 8 = 2y + 7 ( subtract 2y from both sides )

3y - 8 = 7 ( add 8 to both sides )

3y = 15 ( divide both sides by 3 )

y = 5

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3 years ago

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sladkih [1.3K]

<span> 3 to the 10th power over 3 to the 3rd power</span>

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3 years ago

Which of the following represents the quadratic function f (x) = 5(x − 2)2 − 7 in standard form?

wariber [46]

Answer:

f(x) = 10x - 27. I can't find the answer anywhere

Step-by-step explanation:

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3 years ago