Answer: x = 3
Step-by-step explanation:
Note that this triangle has 3 congruent angles. Therefore, it is an equilateral triangle. So, the sides will also be congruent.
So it can be said that : 6x - 3 = 3x + 6
+3
6x = 3x +9
-3x
3x = 9
/3
x = 3
By replacing x with 3, we can prove that these expressions all equal 15.
6(3) -3 = 18 - 3 = 15 . 3(3) + 6 = 9 + 6 = 15 . 5(3) = 15
Answer:
i believe its 37.7
Step-by-step explanation:
You can use the distributive property and multiply this out.
2x(3x² +9x -3) -2(3x² +9x -3)
= 6x³ +18x²-6x -6x² -18x +6
= 6x³ +12x² -24x +6
The coefficient of the x² term is 12.
_____
You can do this in your head using the techniques of Vedic mathematics. Write the coefficients of the two expressions, putting 0 for the x² coefficient in the first factor.
0 2 -2
3 9 -3
The x² term of the product will be the sum of the products of terms whose degrees add to 2. That is, the first term of the first row times the last term of the second row, plus the product of the middle two numbers in each row, plus the product of the first term in the second row times the last term in the first row.
Here's a more visual representation of the products that get added to get the coefficient of the x² term.
0 2 -2
3 9 -3 . . . . product is 0
0 2 -2
3 9 -3 . . . . product is 18
0 2 -2
3 9 -3 . . . . product is -6
The sum, of course, is 0 +18 -6 = 12
Answer:
^speed, distance, and time^
my answer lies in paper
hope undertand
Answer:
Just leave it how it is, you don't have to do anything with the negative symbol.
<h2><u><em>
Could I please have BRAINLIEST?</em></u></h2>
