Answer:
we say that they are inversely propotional
Step-by-step explanation:
Answer:
where is angle D (inside your brain)
Answer:
2.8 liters
Step-by-step explanation:
So there are various ways to do this problem, this is just MY preferred way.
Since we are given 1/4th of a total value with 14 liters, we can actually make this 4/4 by multiplying our given value by 4. In this case, 14 liters for 25% becomes 56 liters for 100% antifreeze.
Since we know have a percent of 100%, we can proceed to take 10% increments, all the way up to 30%
10% is 5.6, multiplied by 3 is 16.8
While you might want to put 16.8 instantly, don't forget we are looking for how much is ADDED from 25%, not just how much there is.
In this case, subtract 14 from 16.8 to come out with a grand total of 2.8 liters added.
Answer:
64 model cars.
Step-by-step explanation:
What we know.
Cory has 80 cars in his collection.
That is 25% more than Everett has.
We can deduce that the equation would be c = 1.25e.
So, how do we figure out e?
Well, 1.25 is the same as 5/4.
So, find the reciprocal of 5/4 and multiply by 80.
4/5 * 80 = e
64 = e
Everett has 64 model cars in his collection
x+2 (x+2) + 8
------- = ---------------
14 14+9
solve by using cross products
(x+2) * (14+9) = 14*(x+2+8)
(x+2)*23 = 14*(x+10)
distribute
23x+46 = 14x+140
subtract 14x from each side
9x+46 = 140
subtract 46 from each side
9x =94
x = 94/4
x = 10 4/9 cm
