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3 years ago

15) What is the vertical distance between (-1,-3) and (-4,-12)?

Mathematics

1 answer:

Nana76 [90]3 years ago

6 0

The answer is B-9. Because if you were to plot the coordinates the difference is 9

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The endpoints of CD are C(–8, 4) and D(6, –6). What are the coordinates of point P on CD such that P is the length of the line s

Arturiano [62]

If you graph the end points C and D then graph the 4 points at the end it is difficult to tell which points are on CD without a line.
Using the endpoints find the slope (change in y/ change in x) then substitute a point in to find the intercept.
Slope = (-6-4)/(6- -8) = -5/7
Intercept equation (-6) = -5/7 (6) + b
b = -1.71428571429
Graphing the line shows only 2 points on the line (–2.75, 0.25) and (0.75, –2.25)
I am confused by the part, "P is the length of the line segment from D". Were you given a length P to help you determine which point. Using the distance formula to find the length from each point to D doesn't help determine which one is best with the information you have given. The image shows the distances I calculated and the graphed points.
I hope this helps!

3 0

3 years ago

Read 2 more answers

Expand and simplify 3(x+3) - 2(x+2)

DIA [1.3K]

Step-by-step explanation:

3(x+3) - 2(x+2) =

3x + 9 - 2x - 4 =

x + 5

always remember the rules when combining signs and operations (therefore it is -4 at the end after doing the multiplications) :

++ = +

+- = -

-+ = -

-- = +

5 0

3 years ago

What's the height of a triangle if we know the base is 20 m and the area is 100 m squad

blsea [12.9K]

Answer:

10 m

Step-by-step explanation:

$bh/2$

$20h/2=100$

$20h=200$

$h=10$

3 0

3 years ago

Read 2 more answers

Write 8x+4y=32 in slope intercept form

Dennis_Churaev [7]

Answer:

y=2x-8

Step-by-step explanation:

7 0

3 years ago

You have 80 dollars and play the following game. An urn contains two white balls and two black balls. You draw the balls out one

nekit [7.7K]

Answer:

$45

Step-by-step explanation:

In order to find this we need to understand that every time we bet we are selecting white ball. Because of this we have the chance of getting two times right and two times wrong irrespective of the order. For example we can any of the following orders:

White - White - Black - Black

White - Black - White - Black

Black - White - Black - White

Black - Black - White - White

Irrespective of any of the orders above every time our bet is right (we get white urn) the amount of dollars that we have get increased by half of the current amount. For example on the first turn we are betting $40 (half of initial amount = $80) and if we are right we now have $120 with us. This can be written as

1.5*$80 = $120

Similarly if on first turn we get wrong (black ball) then our amount is half of initial which can be written as

0.5*$80 = $40

So now we know that exactly two times we will be right and exactly two times we will be wrong irrespective of the order because the balls are not replaced hence final solution is:

E(X) = 80*1.5*1.5*0.5*0.5

= $45

5 0

3 years ago