1.

Martha has won 19 out of 28 matches in tennis this season.2.) Which equation models suggest how many more games she needs to win average 75% wins over loses?a) 19/28+x=0.75b) 19+x/28+x=0.75c) 19/28+x=75d) 19+x/18+x=753.) In order to get college tennis scholarship martha needs to bring her winning average 80% what is the no. of matches she needs to win given that she already won 19 out of 28?a) 3b) 4c) 17d) 22​

Answer»

2). A). 19/28 + x = 0.75

Explanation :

28 matches has average of 67.85% which is equals to 68 %

67.85~68%

Now equation for that is 19*x/28 and answer of that will be 67.85

Now here is given how many matches she NEEDS to win in order to win 75 present of over loses it MEANS she has already loses

X-67.85

Now,we have to add 0.75% and we have to MAKE it 0.75 from 68%

In the end

From THREE main equations it will be

19/28+x=0.75% which is answer a)

3). The answer is SIMPLE we have to change 0.75 into 80%

19/28+x=80
19/28=80-x
3/2=80-x

which is equals to 3/2 ~ 3

The answer is a). 3


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