Answer: 2/20, because all those marbles in total is 100. the blue and black marbles would be 70, if you simplify all of it it'd be 2/25.
Step-by-step explanation:
Answer:
Raul's errors are in the application of the distributive property(he applied it wrongly), in not respecting the precedence of operations, and in the multiplication of two terms with the same base(we add the exponent).
Step-by-step explanation:
Distributive property:
The distributive property of multiplication is:
a*(b + c) = a*b + a*c
Precedence of operations:
First multiplication, then addition.
Multiplication of terms with the same base:
The multiplication of h*h = h², which Raul missed.
The correct simplification is given by:
![-[3h + 7h(2-h)] = -[3h + 14h - 7h^2] = -[17h - 7h^2]=7h^2 - 17h](https://tex.z-dn.net/?f=-%5B3h%20%2B%207h%282-h%29%5D%20%3D%20-%5B3h%20%2B%2014h%20-%207h%5E2%5D%20%3D%20-%5B17h%20-%207h%5E2%5D%3D7h%5E2%20-%2017h)
Y=-x^2 is just y=x^2 reflected over the x-axis. In other words, the parabola is upside-down.
Answer:
Area = 10 1/9 meters squared
Step-by-step explanation:
mixed number to improper fraction:
4 2/3 meters = 14/3 meters
2 1/6 meters = 13/6 meters
Area = length times width:
Area = (14/3) x (13/6)
= 182/18
Simplify fraction:
182/18 = 91/9
improper fraction to mixed number:
91/9 = 10 1/9 meters
AREA = 10 1/9 meters