Biologists tagged 177 fish in a lake on January 1. On February 1, they returned and collected a random sample of 26 fish, 13 of which had been previously tagged. On the basis of this experiment, approximately how many fish does the lake have?

354

Step-by-step explanation:

We have the following formula:

actual population / captured population = tagged population / tagged population captured.

We have the following data:

captured population = 177

tagged population = 26

tagged captured population = 13

Replacing:

real population / 177 = 26/13

solving:

real population = 177 * 2 = 354

In other words, there are a total of 354 fish.

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

r and t.

both are 64 degrees.