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choli [55]
2 years ago
14

I will give BRAINlIEST if u explain how to solve these plz!!!

Mathematics
2 answers:
AURORKA [14]2 years ago
7 0
<h2>Answer:</h2>

Question 4: \frac{8}{1}

Question 5: \frac{4}{5}

Question 6: \frac{2.5}{1}

Question 7: \frac{1}{1}

<h2>Step-by-step explanation:</h2>

The way to solve these types of questions, also know as "<em>slope</em>" is solved in the format \frac{y-y}{x-x} (y minus y over x minus x) which also can be known as \frac{rise-rise}{run-run} (rise minus rise over rune minus run). To solve this you can choose any two sets of numbers (the top and the bottom of a chart is 1 set) and you use its numbers to find the slope. One important rule when solving for slope is to never write your answer in decimal form and rarely write your answer as a whole number always answer questions in fraction form!!!! Anyway, the y and the x are already given so no need to find those as well. Here's the solving of all questions:

<h2 /><h2>4.</h2>

for this question I choose the number sets:\frac{24}{3} and, \frac{32}{4} in. ..equation... written... as, \frac{24-32}{3-4}

so, now the easy part, 24-32=-8

Next we solve the bottom, 3-4=-1

so we end up with \frac{-8}{-1} and when we simplify it can be written as \frac{8}{1} or just 8 (I recommend to always write in fraction form because some teachers will remove points if its not in fraction form).

<h2>5.</h2>

Now, for the rest of the problems I wont explain the solving process.

\frac{60}{185} and\frac{100}{235} written...as,\frac{60-100}{185-235}

60-100=-40

185-235=-50

\frac{-40}{-50} simplify...to,\frac{4}{5}

<h2>6.</h2>

\frac{12.5}{5} and\frac{25}{10} written...as,\frac{12.5-25}{5-10}

12.5-25=-12.5

5-10=-5

\frac{-12.5}{-5}simplify...to,\frac{2.5}{1} or 2.5 (I recommend to always write in fraction form because some teachers will remove points if its not in fraction form).

<h2>7.</h2>

\frac{4}{2} and\frac{5}{3} written...as,\frac{4-5}{2-3}

4-5=-1

2-3=-1

\frac{-1}{-1}simplify...to,\frac{1}{1} or 1 (I recommend to always write in fraction form because some teachers will remove points if its not in fraction form).

Hope this helped, please give mw brainiest I spent half an hour on this :D

        -Thanks for your time.

alexandr402 [8]2 years ago
5 0

Answer:

i dont have any idea.....my brain is full of BTS

Step-by-step explanation:

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A box contains 3 green marbles, 5 blue marbles, and 7 red marbles. Three marbles are selected at random from the box, one at a t
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Answer:

The probability is  P(K)  =   \frac{ 28 }{195}

Step-by-step explanation:

From the question we are told that

   The number of green marbles is  n_g  =  3

    The number of red marbles is  n_b  =  5

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Generally the total number of marbles is mathematically represented as

       n_t  =  n_r  +  n_g + n_ b

        n_t  =  7 +  3 + 5

         n_t  = 5

Generally total number of marbles that are not red is  

     n_k  =  n_g +  n_ b

=>  n_k  =   3 +   5

=>  n_k  =  8

The probability of the first ball not being red is mathematically represented as  

      P(r') =  \frac{n_k}{n_t}

=>  P(r') =  \frac{ 8}{15}

The probability of the second ball not being red is mathematically represented as

      P(r'') =  \frac{n_k - 1}{n_t -1}

=>  P(r'') =  \frac{ 8 -1 }{15-1} (the subtraction is because the marbles where selected without replacement  )

=>  P(r'') =  \frac{ 7 }{14}

The probability that the first two balls  is  not red is mathematically represented as

    P(R) =  P(r') *  P(r'')

=>  P(R) =  \frac{ 8}{15} *   \frac{ 7 }{14}

=>  P(R) =  \frac{ 8 }{30}

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   P(r) =  \frac{n_r}{ n_t -2} (the subtraction is because the marbles where selected without replacement  )

     P(r) =  \frac{7}{ 15 -2}

=>    P(r) =  \frac{7}{ 13}

Generally the probability of the first two marble not being red and the third marble being red is mathematically represented as

        P(K)  =  P(R) * P(r)

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Ajax is 5 and 1 fourth feet tall. His sister is 3 eighths foot shorter than Ajax How tall is Ajax Sister?
user100 [1]

Answer:

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Step-by-step explanation:

Ajax is "5 and 1 fourth feet tall", which can be written as the mixed number 5\frac{1}{4} .

His sister is "3 eighths foot shorter", so she's 3/8 feet shorter than 5 1/4.

So, this is just a subtraction problem:

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Therefore, Ajax's sister is 4\frac{3}{4} feet tall.

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