In January, the depth of a lake was 878 feet. In August, the depth of the lake was 570.7 feet. What is the percentage decrease of the depth of the lake from January to August?

35% percentage decrease

Step-by-step explanation:

so 570.7/878 is 0.65

which is 65 percent

but we need to know the decrease percentage so

100-65=35

10x

step-by-step explanation:

the greatest common factor 30 and 20 is 10

5 is a common factor of 30 and 20 but 10 is also a factor and 10 is greater than 5 so 5 will definitely not be apart of our answer

now the most amount of x's you factor our is just 1 factor of 1

so 10x the gcf of the terms in the polynomial

4sqrt5

step-by-step explanation:

the base has dimensions of 8 x 4, so the diagonal is 64 + 16 square rooted or 4sqrt5.