Answer:
21/2 or 10.5
Step-by-step explanation:
5x - 3y
5(5/2) - 3(2/3)
25/2 - 2
25/2 - 4/2
21/2
Answer: square root(265)
Step-by-step explanation:
Again, you can solve this via the Pythagorean theorem(a^2+b^2=c^2)
a= a side
b= another side
c= hypotenuse
Now, Substitute
12^2+11^2=x^2
144+121= 265
Now, square root and you get
square root(265)
Answer: 12x^2 +5x + 7
Step-by-step explanation:
You just need to combine like terms. you can combine 8x^2 and 4x^2 since they both have the same x^2 value. There is nothing to combine 5x with, so it remains 5x. Finally, you add the two integers, 4 and 3. This gives you the final answer, which is a quadratic equation.
-5x-10=-25 not sure if it’s correct!!!!