4 years ago

Help please!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

nasty-shy [4]4 years ago

4 0

Which question did you need help on?

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In a group of 50 patrons, 18 patrons like lattes, 16 patrons like espressos, and 8 patrons like both coffee drinks. How many pat

Tcecarenko [31]

Add the 18, 16, and 8 together
Then subtract that number from 50.

18+16+8=42
50-42=8

So, 8 patrons don't like either.

3 0

3 years ago

Read 2 more answers

Really need this answered :/ thank you

VladimirAG [237]

Answer:

i believe its the third one don't quote me on that though

Step-by-step explanation:

5 0

3 years ago

3x²-30x+9=0 PLEASE HELP COMPLETING THE SQUARE WILL MARK BRAINLIEST

nlexa [21]

Answer:

i have done the cutting of x's exponent

Step-by-step explanation:

= 3x - 30+9 =0

= 3x - 21 =0

= 3x= 21

= x = 21/3

x= 7 this the answer

7 0

3 years ago

According to the empirical (69-95-99.7) rule, if a random variable z has a standard normal distribution, then approximately 95%

Dmitry_Shevchenko [17]

Using z-scores, it is found that the value of z is z = 1.96.

-----------------------------

Normal Probability Distribution

Problems of normal distributions can be solved using the z-score formula, which for a measure X, in a distribution with mean $\mu$ and standard deviation $\sigma$ , is given by:

$Z = \frac{X - \mu}{\sigma}$

It measures how many standard deviations the measure is from the mean.
Each z-score has an associated p-value, which is the percentile.

The normal distribution is symmetric, which means that the middle 95% is between the 2.5th percentile and the 97.5th percentile.
The 2.5th percentile is Z with a p-value of 0.025, thus Z = -1.96.
The 97.5th percentile is Z with a p-value of 0.975, thus Z = 1.96.
Thus, the value of Z is 1.96.

A similar problem is given at brainly.com/question/16965597

7 0

2 years ago

NEED HELP QUICK !!! Find the value of side X ?

tankabanditka [31]

a²+b²=x²

4²+3²= x²

16+9= x²

25= x²

V25= x

5= x

7 0

2 years ago