You just have to set the denominator to zero and solve for x
The interior angles of a quadrilateral shape add up to 360 so 116+93+45+x = 360 with x equaling 106
Answer:
multiply 10 with the value given for x and add 2 to the result
<span>Dr. Graham currently has two acid solutions.
60% acid AND 20% acid </span>
Dr. Graham needs 30 L of a 50% acid solution
We set up 2 equations in which s = 60% acid and t = 20% acid
A) s + t = 30
B) .60s + .20t = (.50 * 30)
We multiply equation A by -.20
A) = -.20s -.20t = -6 then we add it to B)
B) .60s + .20t = 15
.40s = 9
s = 22.5
t = 7.5
So, she needs to mix 22.5 liters of 60% acid with 7.5 liters of 20% acid.
Source:
http://1728.org/mixture.htm
Answer:
Step-by-step explanation:
Given
See attachment
Required
Find b, c and d
First, we solve for b using:
--- base angles of a parallelogram
Collect like terms
Solve for b
Then, we have:
--- opposite angles
So, we have:
