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2 years ago

Students in classes, displayed below, ate the same ratio of cheese pizza slices to pepperoni pizza slices.

Mathematics

1 answer:

Musya8 [376]2 years ago

4 0

Slices of cheese pizza slizes of pepperoni pizza total pizza
   2 5 7
   6    15 21
   8 20    28
   5 1/2 13 3/4 19 1/4
      3 1/3    8 1/3 11 2/3
   3/5    1 1/2 2 1/10

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In a horse race with 5 horses, you make a bet by predicting the ranking of all 5 horses. Suppose you place your bet at random. W

lapo4ka [179]

Answer:

P( top two horses are predicted incorrectly in incorrect order)

= $\frac{1}{2}$

Step-by-step explanation:

In the horse race the outcome can be predicted in 5! = 120 ways.

Now suppose the top two horses were predicted incorrectly in incorrect order. Now, the top horse can be predicted incorrectly in 4 ways.

Suppose the top horse was predicted to be in k-th position where k = 2, 3 ,4,5

so the second horse can be predicted to be in place from 1 to (k - 1)

So, the top two horses can be predicted incorrectly in incorrect order

in $\sum_{k =2}^{5}(k - 1)$ = 10 ways

and for each prediction of the two the remaining horses may be predicted in 3! = 6 ways.

Hence ,

P( top two horses are predicted incorrectly in incorrect order)

= $\frac{6 \times 10}{120}$

= $\frac{1}{2}$

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2 years ago

What is 12 2/3 X 2 1/2

vampirchik [111]

Answer:

31.67

Step-by-step explanation:

12 2/3 X 2 1/2

we begin by converting this into improper fractions,

= 38/3 * 5/2

= 95/3

= 31.67

8 0

3 years ago

Can somebody help me?

pashok25 [27]

The answer is B becuase if u take the reciplericle by the antiretroviral you would get B

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2 years ago

Is 10(x-2)=5(2x-4) infinitely many or no solution

Pani-rosa [81]

They cancel out, so you can decide from this 10x-20=10x-20.
Hope this answer will help!

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3 years ago

If the area of a circular cricket ground is 15,400 m2, then find its circumference. (Take π≈22/7)

Dmitry_Shevchenko [17]

Answer:

440m^2

Step-by-step explanation:

15400/(22/7)=4900, which is r^2, so r=70. Now we can find the circumference by doing 22/7*2*70, which is 440.

5 0

1 year ago

Read 2 more answers