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3 years ago

X^2-8x+10=-4 quadratic equation written in standard form

Mathematics

1 answer:

ASHA 777 [7]3 years ago

3 0

Rewriting the formula in standard form would be x^2-8x+14=0

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What is the second term of (p+q)^5 1. 25p^4 2. 5p^4q 3. 25p^4q 4. 125p^4q

yaroslaw [1]

I hope this helps you

4 0

3 years ago

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Select two ratios that are equivalent to 2 : 9.

White raven [17]

Answer:

B & C

Step-by-step explanation:

2:9 can also be written as 2/9

A. 9:2 is just the reciprocal of 2:9 so it is not equivalent to it

B. 18:81 is 2×9:9×9 meaning that is equivalent to 2:9

C: 12:54 is 2×6: 9×6 so it is equivalent to 2:9

Since the two correct answers have already been found, I don't need to explain more.

Hope this helped!!!

3 0

3 years ago

A walking path across a park is represented by the equation y=-4x+10. A new path will be built perpendicular to this path. The p

Lera25 [3.4K]

Given:

The equation of a line is

$y=-4x+10$

A perpendicular line on the given line passes through the point (4,-6).

To find:

The equation of the perpendicular line.

Solution:

We have,

$y=-4x+10$

On comparing this equation with slope intercept form $y=mx+b$ , we get

$m=-4$

So, the slope of the given line is -4.

We know that the product of slopes of two perpendicular lines is always -1.

$m\times m_1=-1$

$(-4)\times m_1=-1$

$m_1=\dfrac{-1}{-4}$

$m_1=\dfrac{1}{4}$

The slope of the required line is $\dfrac{1}{4}$ and it passes through the point (4,-6). So, the equation of the line is

$y-y_1=m_1(x-x_1)$

$y-(-6)=\dfrac{1}{4}(x-4)$

$y+6=\dfrac{1}{4}x-1$

$y=\dfrac{1}{4}x-1-6$

$y=\dfrac{1}{4}x-7$

Therefore, the correct option is B.

3 0

3 years ago

Use the given information to write the equation of each line

Pachacha [2.7K]

Answer:

Step-by-step explanation:

The slope-intercept form of an equation of a line:

$y=mx+b$

m - slope

b - y-intercept

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

We have two points (1, -4) and (-2, 5).

Substitute:

$m=\dfrac{5-(-4)}{-2-1}=\dfrac{5+4}{-3}=\dfrac{9}{-3}=-3$

Substitute the value of a slope and the coordinates of the point (1, -4) to the equation of a line:

$-4=-3(1)+b$

$-4=-3+b$ add 3 to both sides

$-4+3=-3+3+b$

$-1=b\to b=-1$

Finally:

$y=-3x-1$

5 0

3 years ago

PLS HELP DUE TODAY i will give brailest if you show all work please help

Fittoniya [83]

Answer:

15) 3(4+r)=-18

3x4+3xr

12+3r= -18

-12 -12

3r= -30

/3 /3

r= -10

Step-by-step explanation:

distribute the 3 to the 4 and the r you should then have 12+3r=-18 and so subtract from both sides 12 and you should have 3r=-30 divide both sides by 3 and you get your answer r=-10

8 0

3 years ago

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