Answer:
r=-2/3 or r= 6
Step-by-step explanation:
To solve this equation to find r, first subtract 5 from both sides.
3r² - 16r -7 -5= 5 -5
3r² - 16r -12= 0 (simplify)
(3r + 2)(r - 6)= 0 (factorise the equation)
3r+2=0 or r-6=0
3r= -2 or r= 6
r= -2/3
A mapping diagram shows relationships
Answer:
<u>There are 3.48 cups of water in 4 cups of skim milk</u>
Step-by-step explanation:
Skim milk has 87% water = 0.87
How much water is in 4 cups of skim milk?
Amount of water = Number of cups * Percentage of water
Amount of water = 4 * 0.87
Amount of water = 3.48 cups
<u>There are 3.48 cups of water in 4 cups of skim milk</u>
Answer:
wheres the question?
Step-by-step explanation:
The objective is to get the variable (x) alone. To do this start be subtracting 3. What you do to one side you have to do to the other so you have to subtract three from the other side of the equal sign as well. So now you have:
20x= 17-3 subtract the 3 to get 20x=14
Now because the 20 is attached to the x In order to get the x alone you have to divide by 20:
20x/20. =14/20 divide 14 by 20
X=.7 or x=7/10