3b + 2y = 5g
20g ÷ 5g = 4
4 x 2 = 8
8 oz of yellow paint
5x2-3x=25
Divide each term by 5:
x^2 - 3/5x = 5
Make a trinomial square of the left side by taking the square of half of the coefficient of x.
The coefficient of x is -3, so the square would be (-3/10)^2
Add that to both sides of the equation.
Now you have:
x^2 - 3/5x + (-3/10)^2 = 5 + (-3/10)^2
Simplify both sides:
x^2 -3/5x +9/100 = 509/100
Factor the trinomial:
(x-3/10)^2 = 509/100
Solve for x, , take the square root of both sides:
x-3/10 = +/-√509 / 100
Simplify the right side:
x-3/10 = +/-√509/10
Add 3/10 to both sides:
X = +/-√509/10 + 3/10 ( this is the exact form)
You can then find the decimal answer if needed.
Answer:
the ans:
Step-by-step explanation:
The percentage increase in the perimeter of the rectangle is 6.67 %.
Percentage :
A percentage is a number or ratio that can be expressed as a fraction of 100.
The length of the rectangle is increased by 10% ,
10%
If initial length of rectangle is 10 then new length of rectangle will be 11 unit.
5 %
If initial width of rectangle is 20 then new width of rectangle will be 21 unit.
Initial perimeter
New perimeter
the percentage increase in the perimeter of the rectangle is,
