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denpristay [2]
3 years ago
14

On a coordinate plane, a line goes through (negative 4, 2) and (negative 2, negative 4). Which are solutions of the linear equat

ion? Select all that apply. 3x + y = –10
Mathematics
2 answers:
elena-s [515]3 years ago
8 0

Answer:

The 2nd and last one

Step-by-step explanation:

(-2,-4)

(-5,5)

I did it on edge 2020

hammer [34]3 years ago
3 0

Answer:

Y = (-3) *X - 10

solution for Y =0 ---> X = -10/3

Step-by-step explanation:

Two points:

(Y0 ; X0) = (-4 ; 2)  

(Y1 ; X1) = (-2 ; -4)

There is only one line which pass for both of them, his general expresion is:

y = a*x + b --- (1)

Calculating "a": is the pending of the line.

a = \frac{Y1 - Y0}{X1 - X0} = \frac{(-4) - (2)}{-2 - (-4)} =\frac{-6}{2} = -3

Calculating "b":

Since every point who belongs to the line satisfied the (1) expresion, we can use it for the point (Y1 ; X1) :

Y0 = (-3)*X0 + b  ---> 2 = (-3)*(-4) + b ---> b = -10

<u>Final expresion</u>

Replacing in (1): Y = (-3) *X - 10

Solutions: Y = (-3) *X - 10 = 0 --- > X = -\frac{10}{3}

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Help ASAP!!!! Thanks
Tema [17]

Answer:

No DB is not a perpendicular bisector of AC

Step-by-step explanation:

This is because as AC is a straight line it's angle degree is 180 which when bisected by DB becomes,

180 ÷ 2 = 90

On both the angles i.e <BDC = <NDA = 90°

To make it a perpendicular bisector but

<BDC is not equal to <NDA is not equal to 90°.

Hence, DB is not a perpendicular bisector of line AC.

8 0
3 years ago
4(-3x-5)-(10+4x)<br> Help?
levacccp [35]
-12x-20-40plus 16x
-4x plus -60
5 0
3 years ago
One liter of paint covers 100 square feet. How many gallons of paint does it take to cover a room whose walls have an area of 80
mezya [45]
1 gallon is 3.78 L
100 sq feet needs 1 L
800 sq feet needs x

100/800 = 1/x
100x = 800
x = 800/100
x = 8 L

If you use the fact that 4 L = 1 gallon then you need 2 gallons of paint. I you use the more accurate 3.78 L then
1 gallon = 3.78 L
x gallon = 8 L

3.78 x = 8*1
x = 8/3.78
x = 2.12 gallons.
 
I guess you could say that 1 gallon and 1 L would do you.
8 0
3 years ago
Find the midsegment of the triangle which is parallel to CA.​
Nataliya [291]

Answer:

\pmb{ \pink{QUESTION�}}

Find the midsegment of the triangle which is parallel to CA.

\pmb{ \pink{ANSWER:-}}

Tip

  • A midsegment of a triangle is a segment connecting the midpoints of two sides of a triangle.
  • This segment has two special properties. It is always parallel to the third side, and the length of the midsegment is half the length of the third side.
  • If two segments are congruent, then they have the same length or measure.In other words, congruent sides of a triangle have the same length.

\frak{Explanation:-}

We have to find the segment which is parallel to CA.

From the given data,

The segment EG is the midsegment of the triangle\triangle ABC.

So we have,

A midsegment of a triangle is a segment connecting the midpoints of two sides of a triangle. This segment has two special properties. It is always parallel to the third side.

\implies\rm{midsegment \:  EG \: parallel \: to \:  CA}

\frak{RainbowSalt}~

6 0
2 years ago
Read 2 more answers
What is the lowest number 588 can be multiplied by so that the result is a squared number?
Keith_Richards [23]
The lowest number is  3.

3 x 588  =  1,764

1,764  =  (42) squared

I don't know an easy way to do it.  I just slogged through it one-by-one ...
I tried  2 , then I tried  3  and I didn't have to go any farther.
You could have done the same thing.  The difference between us is that
I'm willing to work on it just for fun, whereas you're not willing to work on it
even for homework.  That's why I became good in math and you might not.
8 0
3 years ago
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