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Vsevolod [243]
3 years ago
10

What is NOT equivalent to 20%? A 0.2 B 1:5 C 10/50 D 4/16

Mathematics
2 answers:
aleksley [76]3 years ago
7 0

Answer:

4/16

Step-by-step explanation:

mark me brainleist please

Butoxors [25]3 years ago
5 0
D. 4/16 as it equals to 0.25 or 1/4
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A random sample of size 100 was taken from a population. A 94% confidence interval to estimate the mean of the population was co
Firlakuza [10]

Answer:

Step-by-step explanation:

1) The z value was determined using a normal distribution table. From the normal distribution table, the corresponding z value for a 94% confidence interval is 1.88

The correct option is D

2) if 70% of all internet users experience e-mail fraud. It means that probability of success, p

p = 70/100 = 0.7

q = 1 - p = 1 - 0.7 = 0.3

n = number of selected users = 50

Mean, u = np = 50×0.7 = 35

Standard deviation, u = √npq = √50×0.7×0.3 = 3.24

x = number of internet users

The formula for normal distribution is expressed as

z = (x - u)/s

We want to determine the probability that no more than 25 were victims of e-mail fraud. It is expressed as

P(x lesser than or equal to 25)

The z value will be

z = (25- 35)/3.24 = - 10/3.24 = -3.09

Looking at the normal distribution table, the corresponding z score is 0.001

P(x lesser than or equal to 25) = 0.001

7 0
3 years ago
In an art class, there are 32 pens to 40 brushes. What is the ratio of pens to brushes written as a fraction in simplest form?
alisha [4.7K]
The answer is 32/40
4 0
3 years ago
Brainliest Show working work out the questions below​
Alex787 [66]

Answer:

sorry bout the second part I wrote mm instead of m. Besides that I think this will be the correct answer. Hope this helps

4 0
3 years ago
5, ?, 10, 12 and 1/2
prohojiy [21]
What he/she said lol
7 0
2 years ago
Solve using elimination.<br> 3x − 5y = 18 <br> -10x + 5y = 10
olga55 [171]

3x - 5y = 18 over

-10x + 5y = 10

Add them because the 5y's have the right symbols for us to add

-7x = 28

Divide

x = -4

Now you can plug in -4 for x in one equation, I would use the first equation!

3(-4) - 5y = 18

-12 - 5y = 18

Add 12

-5y = 30

Divide

y = -6

Your solutions are going to be:

x = -4

y = -6

To check your work plug x and y into one equation:

3(-4) - 5(-6) = 18

-12 + 30 = 18

18 = 18

Since 18 does equal 18 you know that your solution's work!

5 0
2 years ago
Read 2 more answers
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