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3 years ago

11

Please hepl please i want help

2 answers:

Phoenix [80]3 years ago

6 0

Answer:

19/35

Step-by-step explanation: 2/5=14/35 1/7=5/35 14/35+5/35=19/35

goldfiish [28.3K]3 years ago

5 0

Answer:

$\frac{19}{35}$

Step-by-step explanation:

in order to add fractions, they must have the same denominator.

to get the same denominator you can multiply both fractions to get the same number on the bottom

the LCD of 5 and 7 is 35 so you do

$\frac{1}{7}$ · $\frac{5}{5}$ which equals $\frac{5}{35}$

and

$\frac{2}{5}$ · $\frac{7}{7}$ which equals $\frac{14}{35}$

now you can add

$\frac{5}{35} +\frac{14}{35} = \frac{19}{35}$

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Simora [160]

<h2><u>Answer with explanation:</u></h2>

The confidence interval for population mean (when population standard deviation is unknown) is given by :-

$\overline{x}-t^*\dfrac{s}{\sqrt{n}}< \mu$

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I dont understand this at all. I really need help!

Westkost [7]

Hello!

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