Answer:
(2,-1/2)
Step-by-step explanation:
(9+(-5))/2= 2
(6+(-7))/2= -1/2
Answer:
a=4 b=3 c=2 d=1
Step-by-step explanation:
I would say the answer is A
Corresponding angles are congruent, and they have equal measure
- The value of angle 4 is 129 degrees
- Your friend used the wrong theorem
<h3>How to determine the value of angle 4</h3>
From the figure, we have:
Angle 4 = Angle 1 + Angle 2
So, the equation becomes
13x + 12 = 8x + 7 + 4x + 14
Collect like terms
13x - 8x - 4x = 7 + 14 - 12
Evaluate the like terms
x = 9
From the question, we have:
Angle 4 =13x + 12
So, we have:
Angle 4 = 13 * 9 + 12
Evaluate
Angle 4 = 129
Hence, the value of angle 4 is 129 degrees
Read more about corresponding angles at:
brainly.com/question/26167358
Answer:
Step-by-step explanation:
Assume as a basis the final mixture is 1000 mL. That means 399 mL of alcohol
Let x = mL of Soln A and y = mL of soln B.
x = 2y.
Now x + y = 1000
and 0.2x + 0.17y = 399
but x = 2y so 0.4y + 0.17y = 399
0.57y = 399.
y = 700 mL (That is your mL of solution B)