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3 years ago

Hi there can someone tell me how do i solve 2x>7

Mathematics

2 answers:

madam [21]3 years ago

8 0

X equals 4 and any number bigger then 4

MissTica3 years ago

5 0

It equals to 14 dont u know multiplication!

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Suppose that prior to conducting a coin-flipping experiment, we suspect that the coin is fair. How many times would we have to f

BabaBlast [244]

Answer:

153 times

Step-by-step explanation:

We have to flip the coin in order to obtain a 95.8% confidence interval of width of at most .14

Width = 0.14

ME = $\frac{width}{2}$

ME = $\frac{0.14}{2}$

ME = $0.07$

$ME\geq z \times \sqrt{\frac{\widecap{p}(1-\widecap{p})}{n}}$

use p = 0.5

z at 95.8% is 1.727(using calculator)

$0.07 \geq 1.727 \times \sqrt{\frac{0.5(1-0.5)}{n}}$

$\frac{0.07}{1.727}\geq sqrt{\frac{0.5(1-0.5)}{n}}$

$(\frac{0.07}{1.727})^2 \geq \frac{0.5(1-0.5)}{n}$

$n \geq \frac{0.5(1-0.5)}{(\frac{0.07}{1.727})^2}$

$n \geq 152.169$

So, Option B is true

Hence we have to flip 153 times the coin in order to obtain a 95.8% confidence interval of width of at most .14 for the probability of flipping a head

6 0

3 years ago

A line has a y-intercept of 0 and a slope of 7/11 what is the equation in slope-intercept form

NARA [144]

Answer:

y = 7/11x

Step-by-step explanation:

4 0

4 years ago

Mary says,

igor_vitrenko [27]

Answer: you could look it up or have a tutuar teach you to learn it

Step-by-step explanation:

7 0

3 years ago

Select the correct answer,

Slav-nsk [51]

Give me 8 mins i will answer in the comments

6 0

3 years ago

Which of the following is x=-5 a solution

natita [175]

It might be letter c

5 0

3 years ago