Please help!!!!!!!!!!!!!!!!!!!

Answers

Answer 1

Answer:

Answer:

3√11

Step-by-step explanation:

You use the Pythagorean Therom, 18^2-15^2 give you 99. You find the square root of 99, you break it down into 9 and 11. Take the square root of 9, which is three, and you cant seperate 11. So thats how you get 3√11

Answer 2

Answer:

Answer:

3√11 is your correct answer!

Step-by-step explanation:

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Help with number 7 I forgot how you find the retail sale price markdwon

Answers

I had these kind of questions in my exams recently.... hope this helps Xx

The product of the slopes of perpendicular lines equals what?

Answers

The product of the slopes of perpendicular lines equals -1

Solution:

Need to determine product of slope of perpendicular lines.

Product of slopes of perpendicular lines is always equal to -1.

lets verify this.

let consider following two equation of perpendicular lines

2x – y = 1

x + 2y = 2

Now evaluate slope of each line by representing them in slop intercept form that is y = mx + c

Where coefficient of x represents slope m.

Representing first line in slope intercept form we get

y = 2x – 1

On comparing above equation with slope intercept form we can say that its slope is 2.

Similarly representing x + 2y = 2 equation in slope intercept form we get

$y=-(1)/(2) x+1$

On comparing above equation with slope intercept form we can say that its slope is $(-1)/(2)$

On multiplying slopes of two perpendicular lines we get,

$2 *\left(-(1)/(2)\right)=-1$

Hence product of slope of perpendicular line is -1

If two non-vertical lines are perpendicular, then their slopes are opposite reciprocals giving you -1.

:) Hope this helps.

X-6=-5 plz help me plz plz plz

Answers

X - 6 = -5

If we add 6 to both sides we get:
X - 6 + 6 = -5 + 6
X = 1

x=1

1-6=-5
If you're doing it straight across this way, then when you subtract one from six, (since six is larger than one,) it will become a negative number.
Hope that helped!

A rectangle has a length of 4 times the width minus 7.The perimeter is 136.Find the width and the length.

Answers

Let the width be x

Therefore Length will be 4x - 7

Formula for perimeter of rectangle is:

2L + 2w = P (where L is length, w is width and P is perimeter.)

2(4x -7) + 2 (x) = 136

8x -14 + 2x = 136

8x + 2x = 136 + 14

10x = 150

x = 150/10

x = 15

The width is 15

therefore the length will be : 4(15) -7 → 60 - 7 = 53

The length is 53

What’s 3x+6y=12 in the form y=mx+b

Answers

3x + 6y = 12

3x(-3x) + 6y = 12 (-3x)

6y = -3x + 12

6(y)/6 = (-3x + 12)/6

y = -1/2x + 2

hope this helps

Hey there!

3x+6y=12

Divide both sides by 3 and your equation would now look like:
x+2y= 4
Move the x to the other side
2y= -x+4
Seprate the y by dividing both sides by 2
y= $(1)/(2)$ x+2

Michelle is building a rectangular landing strip for airplanes .She has material to cover 1/1,500 of a square mile. The landing strip must be 1/6 of a mile long. With the amount of material that has , what is the greatest possible width the land strip, in miles?

Answers

I think that the missing word here is:
"with the amount of the material that Michelle has"

Let's say that her landing strip is x miles long, then its area would be:

$(1)/(6) *x$

We also know how big it is:

$(1)/(6) *x= (1)/(1 500)$

now, let's multiply both sides by 6:
$(6)/(6) *x= (6)/(1 500)$
$1 *x= (3)/(750)$
$x= (1)/(250)$

So the answer is that it would be $x= (1)/(250)$ miles wide

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