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3 years ago

This is math and I need help to solve

Mathematics

1 answer:

Bogdan [553]3 years ago

8 0

Answer:

A. 15

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Write the equation of the line in slope-intercept form and identify the slope. −5x + 10y = 20

xenn [34]

Answer:

<h2>Slope = 1/2</h2>

Step-by-step explanation:

Equation of a line is y = mx + c

where

m is the slope

c is the y intercept

From the question the equation is

- 5x + 10y = 20

To find the slope we must first write the equation in the form above

- 5x + 10y = 20

Move - 5x to the right side of the equation

10y = 5x + 20

Divide both sides by 10

We have

$y = \frac{5}{10} x + \frac{20}{10}$

$y = \frac{1}{2} x + 10$

Comparing with the general form of equation above

Slope / m = 1/2

Hope this helps you

5 0

3 years ago

select whether the equation has a solution or not, square root x-2- square root 2x= square root x+2 (a. roots b. no roots)

Agata [3.3K]

The equation is $\sqrt{x-2 \\ \\$ - $\sqrt{2x}$ = $\sqrt{x +2}$

Solution

Step 1:

Take square on both sides, we get

3x - 2 $\sqrt{x-2}$ $\sqrt2{x}$ -2 = x +2

Step 2:

Subtract 3x - 2 from both sides, we get

-2 $\sqrt{x-2} \sqrt{2x} = -2x + 4$

Step 3:

Again, square on both sides in order to get rid of the square root from the above equation, we get

$8x^{2}-16x = 4x^{2} -16x +16$

Now we have to simplify it,

$4x^{2} -16 = 0$

Step 4:

Now we have to solve this quadratic equation, in order to get the solution.

We get x = 2 and x = -2, When we verifying solution in the original given equation, the solution does not satisfy the equation.

Reason: We get negative number in the square root.

Therefore, it has no Roots.

Answer: b) No roots

5 0

3 years ago

This is math and I need help to solve​

This is math and I need help to solve