Simplify (1/5k)^2;uiovpvuylc gjlcgj

-6x + 1 > -23 which value of x is in the solution set of the inequality

Gennadij [26K]

-6x + 1 > -23 <=>

-6x > -24 <=>

x < 4

5 0

3 years ago

solve for x x/9−5=5 x=

gregori [183]

Answer:

x=90

Step-by-step explanation:

Let's solve your equation step-by-step.

x/9−5=5

Step 1: Simplify both sides of the equation.

x/9−5=5

1/9x+−5=5

1/9x−5=5

Step 2: Add 5 to both sides.

1/9x−5+5=5+5

1/9x=10

Step 3: Multiply both sides by 9.

9*(1/9x)=(9)*(10)

x=90

Answer:

x=90

3 0

2 years ago

Read 2 more answers

Alex and Leandro purchase two matinee movie tickets. A matinee ticket costs , a drink costs , and a bag of popcorn costs . Defin

REY [17]

Answer: (2p + 1.5d) + (5*(2)) = T

Step-by-step explanation: (2p + 1.5d) + (5*(2)) = T

Since there are no costs, i'll make up my own uwu;

Matinee = $5

Popcorn = $2

Drink = $1.5

T = total

(2p + 1.5d) + (5*(2)) = T

2p ($2 for each bag of popcorn - p represents popcorn)

1.5d ($1.5 for each drink, - d represents drinks)

5*2 ( 5 * 2 because we are already given the amount of matinee tickets they buy.

5 0

2 years ago

The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took these 100 customer

AlladinOne [14]

Answer:

$4-2.326\frac{1}{\sqrt{100}}=3.767$

$4+2.326\frac{1}{\sqrt{100}}=4.233$

So on this case the 98% confidence interval would be given by (3.767;4.233)

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X=4$ represent the sample mean

$\mu$ population mean (variable of interest)

$\sigma=1$ represent the population standard deviation

n=100 represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (1)

Since the Confidence is 0.98 or 98%, the value of $\alpha=0.02$ and $\alpha/2 =0.01$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.01,0,1)".And we see that $z_{\alpha/2}=2.326$