Answer:
C.-1.6
Step-by-step explanation:
distance: -1 - (-2) = 1
1 ÷ 5 = 1/5
-1 - 1/5 × 3 = -1 3/5 = -1.6
Answer:
2.) 7.8
Step-by-step explanation:
We can use Pythagorean theorem
a^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse
5^2 + 6^2 = c^2
25+36 = c^2
61 = c^2
Take the square root of each side
sqrt(61) = sqrt(c^2)
7.810249676 = c
The answers comes to be for every 1 unit of pure acid (100%) add three units of 20% and you get the desired 40%
so if you need 40 L (i don't know what container sizes there are so i can't give you an exact amount just add 1 part 100% acid and 3 parts 20% acid) <span />
Answer:
9y + 24
Step-by-step explanation:
A point on the coordinate plane is written as (x,y).. since you have two points on your picture think of it as the 1st (x,y) and the 2nd (x,y). When you use the formula and it says y2 - y1 that means take the 2nd y and subtract the 1st y.
When it says x2 - x1 that means take the 2nd x and subtract the 1st x.
It does NOT matter which one you pick for the 1st (x,y) or 2nd (x,y)
In your problem lets just say you decide (-6,-3) will be your 1st point, that mean -6 will be your x1 and -3 will be your y1
Then that means you have to make (1,6) your 2nd point, that means 1 will be your x2 and 6 will be your y2.
Now just substitute, y2 - y1 / x2 - x1 = 6 - -3 / 1 - -6 = 9/7
