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3 years ago

7

Which expression is equivalent to –0.25x + 1.5 – 0.5x - 2?

2 answers:

MakcuM [25]3 years ago

8 0

Answer:

Its D :3

Step-by-step explanation:

Pie3 years ago

3 0

The answer to that is D

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HELP ME HELP ME 10 POINTS

wel

Answer:

N+P or number 3

Step-by-step explanation:

7 0

3 years ago

Find c such that (−3,−8), (−7,−6), and (c,4) lie on a line.

Nutka1998 [239]

If the 3 points are collinear, then the slopes of all line segments connecting the points are the same.

Thus,

-6 - (-8) 2
m = ------------- = -------- = -1/2
-7 - (-3) -4

Then the following must be true:

4-(-6) 10
-1/2 = ------------ = ---------
c - (-7) c + 7

Cross multiplying, -(c+7) = 20, and c+7 = -20, so that c = -27

8 0

3 years ago

Find the perimeter of the triangle with vertices A(negative 2,2,3), B(4,negative 4,3), and C(7,6,4).

gayaneshka [121]

Answer:

$P\approx 28.872\,\text{units}$

Step-by-step explanation:

We are given coordinates of each of the vertices of the triangle ABC, hence we can use the distance formula to find the lengths of each of the side.

the distance formula is generally written as:

$r = \sqrt{(x_1-x_2)^2+(y_1-y_2)^2+(z_1-z_2)^2}$

for the side AB: A(-2,2,3) and B(4,-4,3)

$AB = \sqrt{(-2-4)^2+(2-(-4))^2+(3-3)^2}$

$AB = \sqrt{(-6)^2+(6)^2+(3-3)^2}$

$AB = \sqrt{72}$

for the side BC: B(4,-4,3) and C(7,6,4)

$BC = \sqrt{(4-7)^2+((-4)-6)^2+(3-4)^2}$

$BC = \sqrt{110}$

for the side CA: C(7,6,4) and A(-2,2,3)

$CA = \sqrt{(7-(-2))^2+(6-2)^2+(4-3)^2}$

$CA = \sqrt{98}$

Now we all the sidelengths:

to find the perimeter we need to just sum the three side lengths:

$P = AB + BC + CA$

$P = \sqrt{72} + \sqrt{110} + \sqrt{98}$

$P\approx 28.872\,\text{units}$

this is the perimeter of triangle ABC

6 0

3 years ago

Please help ill give BRAINLIEST

S_A_V [24]

Answer:

B and D

Step-by-step explanation:

6 0

2 years ago

PLEASE HELP FAST NO LINKS!! <br> 3/2 (x-6)= -3

e-lub [12.9K]

Answer:

x= 4

hope this helps!

4 0

3 years ago

Read 2 more answers