$12 for 15 milliliters $8 for 10 milliliters yes or no

The correct answer is A. 167 milliliters of 7% solution and 333 milliliters of 4% solution and here is how:

If x is the number of milliliters of the 7% saline solution and y is the number of milliliters of the 4% saline solution then add up to 500 milliliters total, so x + y = 500.

and if we do

x + y = 500

x = 500 - y

0.07x + 0.04y = 25 (substitute 500 - y for x)

0.07(500 - y) + 0.04y = 25

35 - 0.07y + 0.04y = 25

-0.03y + 35 = 25

-0.03y = -10

y = 333.333...

y = about 333

x = 500 - y = 500 - 333 = 167

Then you know why the answer is A.

Step-by-step explanation:

step-by-step explanation:

mean or average is 40.6

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc