It is a sunny day in California and both male and female students are out surfing. There are 70 surfers, including 25 females. What percent of surfers are female? Write a proportion for this situation and solve. Round to the nearest tenth.

Work Shown:

We'll use the idea that something like 25% means 25/100

So in general x% = x/100, where x is any positive number.

From here we can say the following:

(number of females)/(number of surfers) = (percent)/100

25/70 = x/100

25*100 = 70*x ... cross multiply

2500 = 70x

70x = 2500

x = 2500/70 ... divide both sides by 70

x = 35.7142857142858 ... which is approximate

x = 35.7

Roughly 35.7% of the surfers are female.

Note how 25/70 = 0.357 approximately; afterward you move the decimal point 2 spots to the right to get to 35.7%

lol

step-by-step explanation:

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.