Answer:
1) 12x-4
2) 5x^2+6x-3
Step-by-step explanation:
For number one, just multiply 3x-1 by for using the distributive property.
This would be 4(3x-1) = 12x-4.
For the second question, you know that you need to add something to 2x^2-6x-12 in order to get 7x^2-15.
2x^2 + ? =7x^2. The question mark would be 5x^2.
You can see that there is no x variable in 7x^2-15. That means you just need to take the opposite of -6x, which is 6x.
Finally to go from -12 to -15, you need to subtract 3.
This will leave you with 5x^2+6x-3
Answer:
The answer to this problem is 12.5.
Step-by-step explanation:
The formula for finding the area of a triangle is b * h * 1/2 or divide by 2 (base times height times one-half or two).
Since this is a equilateral triangle, all of the sides are equivalent to each other. Since we know one of the sides is 5, all of the sides are 5.
5 * 5 = 25
Then you need to multiply this answer by 1/2 or divide by 2, whichever is easier.
25 / 2 = 12.5
The answer is 12.5.
Also, it would be FANTABULOUSLY AMAZING if I could get brainliest!!!
Just sayin, that would be pretty great.
51 = x + (x + 31)
Solve that in order to find the answer to your problem.
2.7 is 27/10 and 3.6 is 18/5
Answer:
x=9
Step-by-step explanation:
2x+10=28
2x=18
x=9
