A photograph is enlarged to make a poster. The photograph is 10 cm wide and 16 cm high. The poster is 25 cm wide. How high is the poster? Explain your reasoning

40cm

Step-by-step explanation:

set up a proportion of width to height.

10/16 = 25/x

cross multiply to get 10x = 400

solve for x and get 40 cm

check your answer by seeing that the poster width (25) is 2.5 x larger than the photograph width (10). the height should have the same ratio, so 16 x 2.5, does indeed = 40.

can i see the following ?

step-by-step explanation:

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v