Question A researcher has saline solutions with concentrations of 8% and 17%. He wants to mix some of each solution to get 30
milliliters of solution with an 11% concentration. How many milliliters of each solution does he need to mix together?
Select the correct answer below:
13 milliliters of 8% solution and 17 milliliters of 17% solution
8 milliliters of 8% solution and 22 milliliters of 17% solution
O
10 milliliters of 8% solution and 20 milliliters of 17% solution
17 milliliters of 8% solution and 13 milliliters of 17% solution
20 milliliters of 8% solution and 10 milliliters of 17% solution

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.

solution:

we have to construct

∠m nt ≅ ∠p qr

the steps to draw this construction are

step 1: use a compass to draw an arc from point q which intersects the side pq at point a and the side qr at point b.

step 2: draw a segment nt and use the same width of the compass to draw an arc from point n which intersects the segment nt at a point x.

step 3:

step 4: join points n and y using a straightedge.

step 3:

option (d).maintaining the same width of the compass as ab, draw an arc from point x such that it intersects the arc drawn from n in a point y.

to draw   congruent angles , 1. width of compasses while drawing two angles should be same i.e from point at which angle has to be drawn, 2.the distance between the two points where the compass intersects the two sides should be same while drawing any two congruent angles.

answer:   rotate 270° clockwise about (7, 1) and reflect across the line x = 7

step-by-step explanation:

because i took test