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Elina [12.6K]
4 years ago
12

the temperature this morning was 6 degrees below zero. in the afternoon was 15 degrees above zero. what was the total temperatur

e increase.
Mathematics
1 answer:
vaieri [72.5K]4 years ago
7 0

Answer:

21

Step-by-step explanation:

add 6 to -6 and add that to positive 15

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Flip 10000 fair coins. You are offered a 1-1 bet that the sum is less than 5000. You can bet 1, 2, ..., 100 dollars. How much wi
insens350 [35]

Answer:

Step-by-step explanation:

Given that 10000 times a fair coin is flipped. Since fair coin prob for head of tail =0.5

If tail comes it will be taken as 1.  Hence for the sum to be less than 5000, no of heads <5000

Since trials are large we approximate to normal with mean = np = 5000 and variance = np(1-p) = 2500

Thus no of heads x is normal with (5000, 50)

P(X

Since this prob is less than 0.5 only minimum amount to be bet i.e. 1 dollar

If sum of coins <5100, then Z = \frac{5100-5000}{50} =2

P(Z<2) = 0.9500

This time we can bet maximum of 100 dollars as probability is very high nearer to 1.

4 0
4 years ago
Suppose your SAT score is 1180. You look up the average SAT scores for
Stella [2.4K]

Answer:

1190

Step-by-step explanation:

3 0
3 years ago
A bag contains 5 black, 3 green, 3 blue, and 4 yellow marbles. A marble is randomly drawn. Find P(not black). 4/15 1/5 1/3 2/3
QveST [7]

Answer:

2/3

Step-by-step explanation:

5 black

3 green (not black)

3 blue (not black)

4 yellow (not black)

there are 5 black and 10 not black out of a total of 15 marbles.

there are 10/15 that are not black.  Reduced 2/3.

6 0
3 years ago
A rectangular prism has a volume of 97.5 cubic inches. The length is 5 inches and the height is 3 inches. What is the width of t
const2013 [10]

Answer:

6.5

Step-by-step explanation:

3X5=15

97.5/ 15 = 6.5

3 0
3 years ago
A triangle has sides of length 8,11 and 15 find the perimeter of the smaller triangle formed by connecting the midpoints of the
Ghella [55]

Answer:

17

Step-by-step explanation:

  • midpoint means half
  • Let's name side 15 as A,11 as B and 8 as C
  • 0.5 of A is 0.5×15=7.5
  • 0.5 of B is 0.5×11=5.5
  • 0.5 of C is 0.5×8=4
  • Perimeter of small triangle =A+B+C
  • 7.5+5.5+4=17
8 0
3 years ago
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