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allochka39001 [22]
2 years ago
6

What Is -6.75?

Mathematics
1 answer:
Charra [1.4K]2 years ago
7 0
Rational is the correct answer
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​claim: the mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. for a random sample of 140 adult​ males,
zaharov [31]

Answer:

93.19%

Step-by-step explanation:

We have that the mean (m) is equal to 70.4, the standard deviation (sd) 11.1 and the sample size (n) = 140

They ask us for P (x =69)

For this, the first thing is to calculate z, which is given by the following equation:

z = (x - m) / (sd / (n ^ 1/2))

We have all these values, replacing we have:

z = (69 - 70.4) / (11.1 / (140 ^ (1/2)))

z = 1.49

With the normal distribution table (attached), we have that at that value, the probability is:

P (z <1.49) = 0.9319

The probability is 93.19%

8 0
3 years ago
Of 75is90 =120 true or false
Mariana [72]

Answer:

False

Step-by-step explanation:

8 0
3 years ago
A company is designing a new cylindrical water bottle. The volume of the bottle will be 119 cm cubed 3. The height of the water
Scilla [17]
4.58 I dont know I’m not sure
4 0
2 years ago
Someone help with these 2 questions
Mice21 [21]

Answer:

7. -27 + 6y = 3y - 9

6y-3y = -9+27

3y = 18

3=6

8. 3(m-2) = -2(m-3)

3m-6 = -2m + 6

3m+2m= 6+6

5m=12

m= 12/5

6 0
2 years ago
The smaller of two consecutive even integers is five more than one half of the greater. Find the integers.
docker41 [41]

Answer:

12, 14

Step-by-step explanation:

Let's call the smallest number n.

Let n + 2 = the larger even integer.

Let's write our equation:

"The smaller of two consecutive even integers is five more" would be +5 and "nne half of the greater" can be written as \frac{1}{2}(n + 2).

n = 5 + \frac{1}{2}(n + 2)

Solvew for n.

n = 5 + \frac{1}{2}(n + 2)

Let's multiply each side by 2, to get rid of the fraction, \frac{1}{2}.

2 (n) = 2(5 + \frac{1}{2}(n + 2))

2n = 2* 5 + 2*(\frac{1}{2}(n + 2))

2n = 10 + (n + 2)

2n = 10 + n + 2

2n = 10 + 2 + n

2n = 12 + n     Subtract n from each side.

2n - n = 12 + n - n

2n - n = 12

n = 12

Let's solve for our other integer:

n + 2 = 12 + 2 = 14

So our 2 consecutive, even integers are

12 and 14

5 0
3 years ago
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