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Wittaler [7]
3 years ago
10

How to write an equation for the line perpendiculer and trhough the given ppoint?

Mathematics
1 answer:
valentinak56 [21]3 years ago
5 0
A method that always works is to find the slope of the given line, then find the negative reciprocal of that. Your result will be the slope of the perpendicular line. Using this slope and the given point, fill in the parameters of the point-slope form of the equation of a line.

For m = slope of given line and (h, k) = given point, the perpendicular line will be
  y = (-1/m)(x -h) +k

Often, this equation can be simplified to another appropriate form, such as slope-intercept form (y = mx+b) or standard form (ax+by=c).

_____
The slope of a given line can be found by solving its equation for y. The slope is the coefficient of x in that solution. If the given line is characterized by two points, (x1, y1) and (x2, y2), then its slope is m = (y2-y1)/(x2-x1).

In the unusual case where the given line is vertical (x=<some constant>), the slope of the perpendicular line is zero, and the line you want becomes y=k.
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Solve the following system of equations algebraically... NEED HELP PLZ
lana [24]

Answer:

flour $42 , bag of sugar $58

Step-by-step explanation:

let f represent flour and s represent sugar, then

7f + 5s = 584 → (1)

5f + 3s = 384 → (2)

Multiplying (1) by 3 and (2) by - 5 and adding will eliminate s

21f + 15s = 1752 → (3)

- 25f - 15s = - 1920 → (4)

Add (3) and (4) term by term to eliminate s , that is

- 4f = - 168 ( divide both sides by - 4 )

f = 42

Substitute f = 42 into either of the 2 equations and solve for s

Substituting into (1)

7(42) + 5s = 584

294 + 5s = 584 ( subtract 294 from both sides )

5s = 290 ( divide both sides by 5 )

s = 58

The cost of a bag of flour is $42 and cost of sugar is $58

3 0
3 years ago
Rationalize the denominator of each of the following 4 by (root7+root3)​
Solnce55 [7]

Answer:

4/(√7 + √3)

Step-by-step explanation:

=> Multiply and divide by (√7-√3)

=> 4(√7 - √3)/((√7 + √3)(√7 - √3)

=> 4(√7 - √3)/((√7)² - (√3)²)

=> 4(√7 - √3)/((7) - (3))

=> 4(√7 - √3)/4

=> √7 - √3

7 0
2 years ago
Read 2 more answers
Write an equation or a proportion to solve.<br> ​What number is 24% of 80?
Pepsi [2]

Answer:

19.20

Step-by-step explanation:

24%×80 = 24×80/100 = 1920/100 = 19.20

5 0
3 years ago
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24.5% of what number is 15
posledela
15 times .245=3.675

24.5 divided by 100= 0.245
5 0
3 years ago
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Can someone please give me the (Answers) to this? ... please ...<br><br> I need help….
Nana76 [90]

The geometric mean is defined as the nth root of the product of n numbers

1. 4 and 9

   Geometric mean = \sqrt{4*9} = \sqrt{36}  =6

2. 5 and 8

   Geometric mean = \sqrt{5*8} =\sqrt{40} = 2\sqrt{10}

3. 8 and 32

    Geometric mean = \sqrt{8*32} =\sqrt{256} =16

4. 64 and 36

     Geometric mean = \sqrt{64*36} =\sqrt{2304}=48

Hope that helped!

3 0
2 years ago
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