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3 years ago

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each month for 7 months, samuel mwos 3 lawns. How many more lawns does he need to mow before he has mowed 29 laws?

2 answers:

ira [324]3 years ago

6 0

He needs to mow 8 more lawns

Sonbull [250]3 years ago

5 0

So you need to get to 29 lawns right? So 29 is a prime number and doesn't have three as a common factor. So you have to get down to the very last bit on how often he mows lawns in the seven months. 7/3 does that, it's not precise but it's a great estimation.

2.333=7/3

So every 2.33... months he mows a lawn. So what's 3's closest factor to 29? 27. So now do 7*9 as in the months and stuff. You get 27, already 27 months off the bat. Now then do 2.33...*2=4.66 months extra.

Here it is, just in case you don't want to read this all.

7/3=2.33...

7*9=27

29-27=2 2*2.33...=4.66+27

31.66 more months

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3 years ago

Each of 10 bins contain 1 piece of fruit. Two bins are oranges, 3 are apples, 4 are peaches, and 1 is a melon. What is the proba

trasher [3.6K]

<h3>The probability of not choosing 2 peaches is $(\frac{13}{15} )$ .</h3>

Step-by-step explanation:

Here, the total number of bins = 10

Total orange bins = 2

Total apples bins = 3

Total peaches bins = 4

Total melon bins = 1

Let E : Event of picking two peaches

So, P(Picking 1 peach ) = $\frac{\textrm{Total peaches in bins}}{\textrm{Total bins}} = \frac{4}{10}$

and P (Picking 2nd peach ) = $\frac{\textrm{Total peaches in bins}}{\textrm{Total bins}} = \frac{3}{9}$

$\implies P(E) = \frac{4}{10} \times\frac{3} {9} = \frac{2}{15}$

So, the probability of not picking 2 peaches = 1 - P(picking 2 peaches)

$= 1 - (\frac{2}{15} ) = \frac{13}{15}$

Hence, the probability of not choosing 2 peaches is $(\frac{13}{15} )$ .

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2 years ago

Help me with number 2 please !

vovangra [49]

2.5... if you question was 5/2

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3 years ago

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A class of 30 swim team members took a lifesaving test. Eighteen of the members had an average score of 92 points. The remaining

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88.8%

Step-by-step explanation:

1.) 30-18= 12 which is the number of member that had an average of 84

2.)Then multiply 12 times 84 = 1008

3.) You multiply 18 by 92 which equals 1656

4.)Add 1008 and 1656 together and get 2664.

5.)Divide 2664 / 30 and you get the average of 88.8

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3 years ago

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2 years ago