Answer:
66.67 ml of 5% solution and 133.33 ml of 6.5% solution are mixed.
Step-by-step explanation:
Let 200 ml of 6% solution is formed by mixing x ml of 5% solution and y ml of 6.5% solution.
We can write the equation x + y = 200 ........ (1)
Now, x ml of 5% solution will contain ml of acid
Again, y ml of 6.5% solution will contain ml of acid.
So, mixing them together will give (0.05x + 0.065y) ml of acid in 200 ml of solution.
So, from the condition given we can write
⇒ 0.05x + 0.065y = 12
⇒ x + 1.3 y = 240 ........... (2) {Dividing both sides by 0.05}
Now, solving equations (1) and (2), we get
0.3y = (240 - 200) = 40
⇒ y = 133.33 ml
From equation (1) we get, x = 200 - 133.33 = 66.67 ml
Therefore, 66.67 ml of 5% solution and 133.33 ml of 6.5% solution are mixed. (Answer)
Answer:
Step-by-step explanation:
The area of the shaded portion, we have to calculate.
Now, join C and O to form two right triangles Δ AOC and Δ BOC.
Now, from Δ AOC,
⇒ x = 6√3
So, area of Δ AOC =
Due to symmetry area of Δ BOC will also be 18√3.
Now, area of quadrilateral OACB is 2 × 18√3 = 36√3
Now, area covered by the arc AB about center O will be
Therefore, the area of the shaded portion is (Answer)
Answer:
36\sqrt{3} -12\pi
2.) v =
3.) v =
4.) v =
I know for a fact that 1 is not the answer. See the attached image for the triangle in question.
The expression represent the value of v is :
The correct option is D
We have the attachment.
As shown, when deconstructing the largest right triangle, we got two similar triangles.
The corresponding sides of similar are proportional. Therefore, we can write the following proportion:
v/ w+ z = z/v
By Cross - multiply, we get:
z(w + z) =
And taking the square root of both sides, we get:
So, The correct option is D
Learn more about Triangle at:
#SPJ2
Answer
I think it is 2 or 3
Hope this helps :/