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3 years ago

Which graph represents y = -2x

Mathematics

1 answer:

mr Goodwill [35]3 years ago

7 0

Answer: Second Option, with a downward trend from left to right.

Step-by-step explanation:

We just have to find a graph that matches up with a slope of -2 or a rise/run of -2/1.

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Can you walk me thru this 2 •(3(5+2)-1)

kobusy [5.1K]

Answer:

Step-by-step explanation:

2 •(3(5+2)-1)

2 ·(3(7)-1)

2·(21-1)

2·20

=40

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3 years ago

In the figure below, BD and EC are diameters of circle P.

Zinaida [17]

Answer: 333 degrees

Step-by-step explanation:

8 0

3 years ago

5.1+2.3x=23.5..solve for x

erastovalidia [21]

Answer:

see beleow

Step-by-step explanation:

Let's solve your equation step-by-step.

5.1+2.3x=23.5

Step 1: Simplify both sides of the equation.

2.3x+5.1=23.5

Step 2: Subtract 5.1 from both sides.

2.3x+5.1−5.1=23.5−5.1

2.3x=18.4

Step 3: Divide both sides by 2.3.

2.3x

2.3

18.4

2.3

x=8

Answer:

x=8

8 0

3 years ago

Read 2 more answers

What is the area of a rectangle with length 36 cm and width 4 cm?

natita [175]

Answer:

A=144cm²

Length: 36cm

Width: 4cm

Step-by-step explanation:

36 x 4 = 144 cm

3 0

3 years ago

Read 2 more answers

PLEASE HELP (30 POINTS) Solve the rational equation x/3 = x^2/x + 5 , and check for extraneous solutions.

anygoal [31]

Option C: $x=0$ and $x=\frac{5}{2}$ are the solutions.

Explanation:

The equation is $\frac{x}{3} =\frac{x^{2} }{x+5}$

We shall determine the value of x, by simplifying the equation.

$\begin{aligned} x(x+5) &=3 x^{2} \\ x^{2}+5 x &=3 x^{2} \\ 2 x^{2}-5 x &=0 \\ x(2 x-5) &=0 \end{aligned}$

Thus, $x=0$ and $x=\frac{5}{2}$ are the solutions.

Now, let us check whether the solutions are extraneous solutions.

Let us substitute $x=0$ in the original equation to check whether both sides of the equation are equal.

$\begin{aligned}&\frac{0}{3}=\frac{0^{2}}{0+5}\\&0=\frac{0}{5}\\&0=0\end{aligned}$

Thus, both sides of the equation are equal.

Hence $x=0$ is a true solution.

Now, Let us substitute $x=\frac{5}{2}$ in the original equation to check whether both sides of the equation are equal.

$\begin{aligned}\frac{\left(\frac{5}{2}\right)}{3} &=\frac{\left(\frac{5}{2}\right)^{2}}{\left(\frac{5}{2}\right)+5} \\\frac{5}{6} &=\frac{\left(\frac{25}{4}\right)}{\left(\frac{15}{2}\right)} \\\frac{5}{6} &=\frac{5}{6}\end{aligned}$

Thus, both sides of the equation are equal.

Hence, $x=\frac{5}{2}$ is a true solution.

Thus, solutions are not extraneous.

Hence, Option C is the correct answer.

8 0

3 years ago