Answer:
Aries originally had 48 cookies
Step-by-step explanation:
2 is half of 4
4 is 1/4th of 16
16 is 1/3rd of 48
check work by reversing steps:
Aries had 48 cookies, she gave 1/3 (16) to Ana. Ana gave 1/4th (4) to Edna, and Edna gives 1/2 (2) to Ruth.
Ruth has 2, so the work is correct.
Answer:
5.4
Step-by-step explanation:
First, you calculate the area of the whole square, then the area of the circle.
Given:
Yamir is twice as old as Pato.
In three years, the sum of their ages will be 30.
Pato's current age is represented by 
.
To find:
The equation that could be used to correctly solve for .
Solution:
We know that, Pato's current age is represented by a, then
Yamir's age = 
After three years,
Pato's age = 
Yamir's age = 
In three years, the sum of their ages will be 30.
Therefore, the correct option is 2.
X^2 + 5x - 5 = 0
This is a quadratic equation that cannot be factored. It can be solved using the quadratic formula or by completing the square.
the quadratic formula is x = (-b +-sqrt(b^2 - 4ac))/2a
a is the coefficient of the x^2, b is the coefficient of the x, and c is the constant.
a = 1, b = 5, c = -5
x = (-5 +- sqrt(25+20))/2
x = (-5 +- sqrt(45))/2
x = (-5 + - 3 sqt 5))/2
x = (-5 + 3sqrt5)/2 and x = (-5 - 3sqrt5)/2
