Answer:
x=0
Step-by-step explanation:
Step 1: Subtract x from both sides.
5x+4−x=x+4−x
4x+4=4
Step 2: Subtract 4 from both sides.
4x+4−4=4−4
4x=0
Step 3: Divide both sides by 4.
4x/4=0/4
Answer:
279 silvery minnow
Step-by-step explanation:
Number of Silvery Minnows initially tagged = 54
Number of minnows captured = 62
Number of tagged minnows in captured ones = 12
Remember that in the very beginning there were no tagged minnows. 54 minnows were captured, tagged and released. This means, there are total 54 tagged minnows in the entire population. Lets say there are x number of minnows in total.
So, in x minnows, 54 are tagged ones.
When 62 minnows are captured, only 12 are tagged ones and remaining are un-tagged. Since, the minnows were randomly captured, we can develop a proportion from this case to estimate the total population of minnows in the Rio Grande River.
Ratio of tagged minnows to total population must be equal to the ratio of captured tagged minnows in total captured minnows.
i.e.

This means, there were 279 silvery minnows in the Rio Grande River.
Answer:
Step-by-step explanation:
Does this help you??
Answer:

Step-by-step explanation:
Given: The ratio of cups of sparkling water to cups of grape juice concentrate is
in a recipe for fizzy grape juice.
To find: two more ratios of cups of sparkling water to cups of juice concentrate that would make a mixture that tastes the same as this recipe
Solution:
Equivalent ratios are the ratios that have the same value.
Find two ratios equivalent to 
Multiply both numerator and denominator of
by 2

Multiply both numerator and denominator of
by 3

So, two more ratios of cups of sparkling water to cups of juice concentrate that would make a mixture that tastes the same as this recipe are 