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Ann [662]
3 years ago
13

14=8+4y , what's y ?​

Mathematics
1 answer:
Sergio [31]3 years ago
7 0

Answer:

1.5 is the answer

Step-by-step explanation:

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Suppose a population has a mean of 400 and a standard deviation of 24. if a random sample of size 144 is drawn from the populati
Drupady [299]
Find the critical value or test statistic.
z = \frac{m - \mu}{\sigma/\sqrt{n}} = \frac{404.5 - 400}{24/\sqrt{144}} = \frac{4.5}{2} = 2.25

Find P(z > 2.25) using a normal distribution table

P(z > 2.25) = 0.0122
6 0
2 years ago
Estimate and calculate <br><br> 2.7 x (-3.2)
irga5000 [103]

Answer:

- 216/25

8 16/25

8.64

Step-by-step explanation:

3 0
3 years ago
Please please help. I have a bunch of these and I don’t understand it at all
shtirl [24]
The correct option is: Option (B) \sum_{i=1}^{7} (5i-2)

Explanation:

First thing is that the difference between each number in the series with the next number is 5. It means it must be the multiple of 5. There are two options that contain multiples of 5: Option B and Option D. Now in the option D, the upper limit is 6. If we put 6 in the expression: 5(6)-2, the last term would be 28. However in the series given in the question, the last term is 33. Hence 5(7) - 2 = 35 - 2 = 33 which is Option B.

When i=1: 5(1)-2 = 3
When i=2: 5(2)-2 = 8
When i=3: 5(3)-2 = 13
.
.
When i=7: 5(7)-2 = 35-2 = 33
Hence the correct option is (B).
3 0
3 years ago
Please help me find the correct answer to this!
WARRIOR [948]

Answer:

D) x=-1, x=-9

Step-by-step explanation:

x=-1, x=-9

7 0
3 years ago
What is the least common denominator (LCD) of 1/2 and 2/3 ?
MrRissso [65]
So basically you just want to find the LCM of the denominators shown, or 2 and 3. 

So in this case, you could use the most inefficient method, or listing the multiples out:

2 : 2, 4, 6

3: 3, 6, 9

And as you can see, the first multiple that matches is 6. So your answer would be B, 6.
8 0
3 years ago
Read 2 more answers
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