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lianna [129]
3 years ago
7

Worth it! Please answer this question! Question 5 please

Mathematics
1 answer:
Ber [7]3 years ago
5 0

Answer:

im getting -1/2? im sorry but i tried with every number in the cart and it all worked.

Step-by-step explanation:

-1 - 0 / -2 - - 4 = -1/2

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Assume that random guesses are made for eight multiple choice questions on an SAT test, so that there are n= 8 trials, each with
alina1380 [7]

Answer:

0.80589

Step-by-step explanation:

So all of the numbers of correct answers less than 4 are 0,1,2,3

We need to calculate the probability for each separately and then add them together.

To find the probability we have to first find the combination. We know that there’s n=8 trials and that p=0.3. So 1-0.3 gives us 0.7.

The combination formula is: ! / (!(−)!)

So the n would always =8, and the r would be 0,1,2,3. So you would have to calculate it for 0,1,2,3 Separately. This can be done by hand or you can use a simple combinations calculator online.

For 0;

The combination is 1,

1 x 0.3^0 x 0.7^8-0 =

0.057648

For 1;

The combination is 8,

8 x 0.3^1 x 0.7^8-1 =

0.19765

For 2;

The combination is 28

28 x 0.3^2 x 0.7^8-2 =

0.296475

For 3;

The combination is 56

56 x 0.3^3 x 0.7^8-3 =

0.254122

All that’s left is to add these four numbers;

0.057647 + 0.19765 + 0.296475 + 0.254122 = 0.80589

4 0
3 years ago
In Exercises 1-20, find the midpoint M of the segment with the given endpoints.
EleoNora [17]
1.(-3/2,3)
2.(5/2,2)
3.(5,4)
4.(7/2,-1)
5.(9/2,-1)

I gave the midpoints what do you mean by the given endpoints
5 0
3 years ago
Five times the sum of a number and three is the same as three times the difference of twice the number and one what is the numbe
cupoosta [38]

Answer:

the number is 105

Step-by-step explanation:

5(x+3) = 3(2x - 1)

5x + 15 = 6x - 3

15 = 1x - 3  

(15 + 3)

x = 18

3 0
2 years ago
6. Peter is standing next to a flagpole and wants to
NikAS [45]

Answer:

forstone

Step-by-step explanation:

sike I lied I dont know this RESPECTFULYY!!

3 0
3 years ago
Brainliest to the most correct answer!!!
tino4ka555 [31]

Answer:

Multiply the top equation by two because both y value will become opposites and will eliminate.

Please give Brainliest! I never got one! :)

3 0
3 years ago
Read 2 more answers
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