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rusak2 [61]
3 years ago
12

What is the decimal of 4 1/5​

Mathematics
2 answers:
mojhsa [17]3 years ago
7 0

Answer:

4.2

Step-by-step explanation:

REY [17]3 years ago
6 0

Answer:

4.2

Step-by-step explanation:

Aka 4 2/10

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for what value of k, the line joining 3x-ky+7=0 is perpendicular to the line joining (4 ,3) and ( 5, -3).
Schach [20]

Answer:

  • k = 18

=========

<h2>Given</h2>

<h3>Line 1</h3>
  • 3x - ky + 7 = 0

<h3>Line 2</h3>
  • Passing through the points (4, 3) and (5, - 3)

<h2>To find</h2>

  • The value of k, if the lines are perpendicular

<h2>Solution</h2>

We know the perpendicular lines have opposite reciprocal slopes, that is the product of their slopes is - 1.

Find the slope of line 1 by converting the equation into slope-intercept from standard form:

<u><em>Info:</em></u>

  • <em>standard form is ⇒ ax + by + c = 0, </em>
  • <em>slope - intercept form is ⇒ y = mx + b, where m is the slope</em>

  • 3x - ky + 7 = 0
  • ky = 3x + 7
  • y = (3/k)x + 7/k

Its slope is 3/k.

Find the slope of line 2, using the slope formula:

  • m = (y₂ - y₁)/(x₂ - x₁) = (-3 - 3)/(5 - 4) = - 6/1 = - 6

We have both the slopes now. Find their product:

  • (3/k)*(- 6) = - 1
  • - 18/k = - 1
  • k = 18

So when k is 18, the lines are perpendicular.

4 0
2 years ago
The Taylor family want to go on holiday for two weeks. Hotel Return flight cost per person Hotel cost per person - 1 week Hotel
Harlamova29_29 [7]

240.70 x 4 = 962.80

560 x 4 = 2240

28 x 4 = 116

962.80 + 2240 + 116 = 3314.80

This is the answer and that is how we get the answer

6 0
3 years ago
Read 2 more answers
What is -3(5+5)&gt;5x?​
VMariaS [17]

Answer:

The answer is x < -6

hope that helps

-3(5+5)>5x

-15+-15>5x

-30>5x

5x<-30

Divide both side by 5

5x÷5 < -30÷5

x<-6

8 0
3 years ago
Read 2 more answers
A cube box has a side length of 7 feet . what is the total surface area of the mix?
Tomtit [17]

Answer:

294

Step-by-step explanation:

SA   = 6x^{2}

       = 6 (7^{2} )

294  =  6 (49)

5 0
3 years ago
A customer was so happy with your service that they wanted to give you a 15% tip on the price of the car. If their car costs $43
Musya8 [376]

Answer:

$6,567

Step-by-step explanation:

Multiply $43,780 by .15

4 0
4 years ago
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