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Molodets [167]
3 years ago
6

I need help please now

Mathematics
1 answer:
Arlecino [84]3 years ago
3 0

Answer:

x=12

Step-by-step explanation:

This is an equilateral triangle.  That means all the angles are equal

There are three angles  and they add to 180.  180/3 =60.  Each angle is equal to 60

4x+12 =60

Subtract 12 from each side

4x+12-12 = 60-12

4x = 48

Divide by 4

4x/4 =48/4

x=12  

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Someone help meeee lollll
den301095 [7]

Answer:

Step-by-step explanation:

The best way to do this is to first remove the parenthesis by distributing the negative into them. Then we will group the like terms together, moving their respective signs with them, then we will simplify.  For the first one, after distributing the negative into the parenthesis (remember that a negative in front of a set of parenthesis containing a polynomial changes the signs in front of each term within the polynomial; negatives become positives and positives become negatives):

3x^2-6x+11-10x^2+4x-6 and then grouping like terms next to each other:

3x^2-10x^2-6x+4x+11-6 (this step is not completely necessary; I just encourage new learners to do it so as to not miss any of the like terms)

The above then simplifies to

-7x^2-2x+5

The next one, after distributing the negative into the parenthesis:

-3x^2-5x-3+10x^2+7x-2 and then grouping like terms next to each other (remember to move their signs with them!):

-3x^2+10x^2-5x+7x-3-2 which simplifies to

7x^2+2x-5

Now for the last one:

12x^2+6x-5-5x^2-8x+12 and

12x^2-5x^2+6x-8x-5+12 which simplifies to

7x^2-2x+7

6 0
3 years ago
Write an equation using point-slope for<br> (-2, -3), (-1,6)
miss Akunina [59]

Step-by-step explanation:

please mark me as brainlest

3 0
2 years ago
Can someone tell me what 5/6 x 9/10 is and explain it please don’t just give me a answer
nadezda [96]
How this is solved is by

Multiply 5/6 with 9/10
This multiplication involving fractions can also be rephrased as "What is 5/6 of 9/10?"

5
6
×
9
10
is
3
4
.

Steps for multiplying fractions

Simply multiply the numerators and denominators separately:
5
6
×
9
10
=
5 × 9
6 × 10
=
45
60
After reducing the fraction, the answer is
3
4
Or 3/4
8 0
3 years ago
What is the value of 6 + 2x2, when x = 3?<br> X
Lyrx [107]
6 + 2(x)2
6 + 2(3)2
=6 + 6(2)
=6 + 12
=18
5 0
3 years ago
Read 2 more answers
Solve for x. <br> 2/3(x - 7) = -2
son4ous [18]
2/3x -14/3 = -2  -foiled

2/3x = -6/3 +14/3 -common denominator

2/3x = 8/3

x = 8/3 * 3/2 

x = 24/6 

x= 4

4 0
3 years ago
Read 2 more answers
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