In trevor's biology class, the students tested for bacteria on a kitchen sponge. they found that there were approximately 17,000,000 bacterial colonies on a single sponge. express their findings in scientific notation.

in scientific notation their finding is expressed as 1.7 * 10 ^7

Step-by-step explanation:

Scientific notation expresses a number in powers or multiples of 10 and its expressed as:

number  * 10 ^n

where number is your number and n is the power by which you elevate 10 or the number of times 10 is multiplied,  To find n we only have to divide our number  by 10. In this case we have:

17,000,000 / 10 = 7

The result represents the power by which we elevate 10. Then, we must move our decimal point this number of times to the left so  17,000,000 is expressed as 1.7000000 or 1.7 and finally we have  

1.7 * 10 ^7 as the scientific notation

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐