X + 9 =20 x=__

In the summer a large pool evaporates water at 15% per day. If the pool starts out with 25,700 gallons of water, which function

JulijaS [17]

Answer:

$y=25,700(0.85)^{x}$

Step-by-step explanation:

we know that

In this problem we have a exponential function of the form

$y=a(b)^{x}$

where

y ----> represent the pool’s loss of water

x ----> the number of days

a is the initial value

a=25,700 gal

b ----> is the base

r=15%=15/100=0.15

b=(1-r)=1-0.15=0.85

The function is equal to

$y=25,700(0.85)^{x}$

8 0

3 years ago

What is the volume? 7 cm 5 cm 8 cm cubic centimeters

Flura [38]

Answer:

280 cm

or 280cm^2

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

A professor would like to test the hypothesis that the average number of minutes that a student needs to complete a statistics e

professor190 [17]

Answer:

$\chi^2 =\frac{15-1}{25} 16 =8.96$

The degrees of freedom are given by:

$df = n-1 = 15-1=14$

The p value for this case would be given by:

$p_v =P(\chi^2$

Since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true deviation is not ignificantly lower than 5 minutes

Step-by-step explanation:

Information given

$n=15$ represent the sample size

$\alpha=0.05$ represent the confidence level

$s^2 =16$ represent the sample variance

$\sigma^2_0 =25$ represent the value that we want to verify

System of hypothesis

We want to test if the true deviation for this case is lesss than 5minutes, so the system of hypothesis would be:

Null Hypothesis: $\sigma^2 \geq 25$

Alternative hypothesis: $\sigma^2$

The statistic is given by:

$\chi^2 =\frac{n-1}{\sigma^2_0} s^2$

And replacing we got:

$\chi^2 =\frac{15-1}{25} 16 =8.96$

The degrees of freedom are given by:

$df = n-1 = 15-1=14$

The p value for this case would be given by:

$p_v =P(\chi^2$

Since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true deviation is not ignificantly lower than 5 minutes

6 0

3 years ago

Help if you get it right I will give you Brainliest

olga_2 [115]

Answer:

My name is Khalil, and I’m like a happy meal, in FIFA I’m defender, your ball I will steal, don’t mess with me Habibi, when will you ever learn, cause in the Middle East, I’m Mr. Steal your girlMy name is Khalil, and I’m like a happy meal, in FIFA I’m defender, your ball I will steal, don’t mess with me Habibi, when will you ever learn, cause in the Middle East, I’m Mr. Steal your girlMy name is Khalil, and I’m like a happy meal, in FIFA I’m defender, your ball I will steal, don’t mess with me Habibi, when will you ever learn, cause in the Middle East, I’m Mr. Steal your girlMy name is Khalil, and I’m like a happy meal, in FIFA I’m defender, your ball I will steal, don’t mess with me Habibi, when will you ever learn, cause in the Middle East, I’m Mr. Steal your girlMy name is Khalil, and I’m like a happy meal, in FIFA I’m defender, your ball I will steal, don’t mess with me Habibi, when will you ever learn, cause in the Middle East, I’m Mr. Steal your girlMy name is Khalil, and I’m like a happy meal, in FIFA I’m defender, your ball I will steal, don’t mess with me Habibi, when will you ever learn, cause in the Middle East, I’m Mr. Steal your girlMy name is Khalil, and I’m like a happy meal, in FIFA I’m defender, your ball I will steal, don’t mess with me Habibi, when will you ever learn, cause in the Middle East, I’m Mr. Steal your girl

8 0

3 years ago

Which situation is linear ?

QveST [7]

Answer:

D. The population of a town in Increasing by ten people each year

4 0

3 years ago

X + 9 =20 x=___ help