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3 years ago

Please help me out!!!

Mathematics

2 answers:

Alecsey [184]3 years ago

5 0

Answer:

Step-by-step explanation:

if u substitute -4 in the equation it will give u a math error

Eva8 [605]3 years ago

4 0

Answer:

Step-by-step explanation:

expression : √2x + 7

A) √2(-1) + 7 = √5

B) √2(2) + 7 = √11

C) √2(-3) + 7 = 1

D) B) √2(-4) + 7 = √i

substituting the values given into the equation,

Option D is the best answer to give imaginary number

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Which following relationships would produce a greater output, linear or exponential?

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Answer:

exponential, if you have two groups of data one linear and one exponential eventually the exponential will produce a greater output.

Step-by-step explanation:

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Suppose the equation of a line is 2x − 4y = − 8. Which coordinate pair represents the y-intercept?

Ira Lisetskai [31]

Answer:

(0,2)

Step-by-step explanation:

Convert the equation to <em>y=mx+b</em>.

You get y=1/2+2.

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Please help me out. I don’t understand this problem.. An equation of a line through (-7,-10) which is perpendicular to the line

nordsb [41]

Answer:

The Equation:

$y = \frac{1}{3}x - \frac{23}{3}$

The y-intercept:

$-\frac{23}{3}$

Step-by-step explanation:

<u>Things you need to know:</u>

Perpendicular mean opposite slope.

Need to know point slope form of a linear equation $y - y_1 = x(x - x_1)$

Ok, with that out the way, lets get started!

From the equation y = -3x + 2 we can see the slope, which is -3. We are asked to find an equation that is perpendicular to that slope so that means we need an opposite slope. To turn this slope to an opposite slope flip it and change the sign

-3 = $\frac{-3}{1} = \frac{1}{3}$

Now that we have our opposite slope, which is $\frac{1}{3}$ , we can find the equation the problem is asking us to solve.

We do this by using the point (-7, -10) and our new slope, which is $\frac{1}{3}$ and by using $y - y_1 = x(x - x_1)$

<u>Insert our point and slope into $y - y_1 = x(x - x_1)$ and solve for y</u>

$y - y_1 = x(x - x_1)$

$y - (-10) = \frac{1}{3}(x - (-7))$

$y + 10) = \frac{1}{3}(x + 7))$

<u>Work on the right side of the = sign</u>

Distribute 1/3 to x and 7

$y + 10 = \frac{1}{3}(x + 7))$

$y + 10 = \frac{1}{3}x + \frac{7}{3}$

<u>Bring the 10 over to the right side by adding a -10</u>

$y + 10 -10= \frac{1}{3}x + \frac{7}{3} - 10$

$y = \frac{1}{3}x + \frac{7}{3} - 10$

Do the math for $\frac{7}{3} - 10 = -\frac{23}{3}$

$y = \frac{1}{3}x - \frac{23}{3}$

<u>We are done.</u>

The Equation:

$y = \frac{1}{3}x - \frac{23}{3}$

The y-intercept:

$-\frac{23}{3}$

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Step-by-step explanation:

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