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kifflom [539]
3 years ago
15

I need help again-

Mathematics
2 answers:
jeka943 years ago
8 0

Answer:

X=5

Step-by-step explanation:

AVprozaik [17]3 years ago
7 0

Answer:

Step-by-step explanation:

You are going to get a bunch of minus signs. But they are not as bad as they seem.

-10x + 8 = - 42           Subtract 8 from both sides.

-10x + 8-8 = -42-8     Combine

-10x = - 50                 Divide by - 10

-10x/-10 = -50/-10

x = 5                          The minus signs cancel.

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1. Write a two-column proof.
Alexandra [31]

Answer:

Check it below, please

Step-by-step explanation:

Hi there!

Let's prove segment AB is perpendicular to CD. Attention to the fact that a two column proof has to be concise. So all the comments can't be exhaustive, but as short as possible.

Let's recap: An isosceles triangle is one triangle with at least 2 congruent angles.

Statement                     Reason

\overline{AB} \cong \overline{AC}\\                     Given

\widehat{ACB} \:bisects\: \overline{AB}        Isosceles Triangle the altitude, the bisector coincide.          

\overline{AD} \cong \overline{DB}               Bisector equally divide a line segment into two congruent      

m\angle CDA =m \angle CBD=90^{\circ} Right angles, perpendicular lines.                  

\overline{CD}\perp \overline{AB}                    Perpendicular Line segment      

8 0
4 years ago
Why do you need to change the signs in -x^2+6x+m=0 ?
Goshia [24]

Answer:

It isn't necessary but having a positive coefficient for x^2 makes things like completing the square and factoring easier.

3 0
4 years ago
Will mark brainliest<br> 2+2-1=x
erik [133]

Answer:

2+2 is 4 minus 1 is 3 quick math

Step-by-step explanation:

x=3

7 0
4 years ago
Read 2 more answers
What is this answer -1/2 + 1/10
rewona [7]

Answer:

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Step-by-step explanation:

3 0
4 years ago
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Pls help. 6th grade math.
alexdok [17]

Answer:

Note: If this is really sixth grade math, then im a cucumber. It's way easier than MY math, and I'm in 6th grade lol :P

Another Note: Please vote me "Brainliest", I put a lot of work into this :)

1. 40

2. 60

3. 1.35

4. 6

5. Do this yourself, it requires actually explaining and you have to use your own words. :)

6. Do this yourself, it requires actually explaining and you have to use your own words. :)

7. Do this yourself, it requires actually explaining and you have to use your own words. :)

8. 600 people

9. 4200 people

10. 149 people

11. Sahil came up with his answer so quickly because if 45 is 10% of <em>x</em>, then obviously 30% of x would be 45 times 3 and that is 135. Due to this, he quickly new that the number of people between the ages of 30 and 49 that voted is 135 people.

That's it, please heart my answer and vote me brainliest :)

Step-by-step explanation:

Do you really need this part? I didn't do it because it would take forever LOL

7 0
3 years ago
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