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3 years ago

3x+2=2x-8 Help me plz and explain it

Mathematics

2 answers:

Snezhnost [94]3 years ago

8 0

Answer:

x=-10

Step-by-step explanation:

iren2701 [21]3 years ago

4 0

Answer:

x=-10

Step-by-step explanation:

you have to first get x on one side so subtract 2x.

x+2=-8

then you have to isolate x, so subtract 2

x=-10

and that's your answer, hope this helped!

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3 years ago

Which of the value of x satisfies the equation below -2x-7=12

Masteriza [31]

Answer is A.
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8 0

3 years ago

Find the value of x in similar polygons below

muminat

Answer:

Choice A

Step-by-step explanation:

When you have two shapes that are similar their sides are always proportional. So all we have to do is set up a proportion.

$\frac{18}{4.5}=\frac{x}{1.5}$

Now we cross multiply and solve

$27=4.5x\\x=6$

And that's it x equals 6 feet.

4 0

3 years ago

Help anyone can help me do the question 4,I will mark brainlest.

nasty-shy [4]

Answer:

Hello,

Step-by-step explanation:

$A=(1,2)\\B=(0,-1)\\\overrightarrow{AB}=((0,-1)-(1,2)=(-1,-3)\ ||\overrightarrow{AB}||^2=1+9=10\\\overrightarrow{BC}=((3,-2)-(0,-1)=(3,-1)\ ||\overrightarrow{BC}||^2=9+1=10\\\\Triangle\ is\ isosceles.\\\\\overrightarrow{AB}.\overrightarrow{BC}=(-1,-3)*\left[\begin{array}{c}3\\-1\end{array}\right] =-3+3=0\\\\Triangle \ is\ right.\\\\$

8 0

3 years ago

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