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soldi70 [24.7K]

3 years ago

5

PLZ HELP ASAP PLZZZ An online store sells each video game for x dollars. Which situation can be represented by this inequality?

7x>5x+3 The cost of 7 games is greater than the cost of 5 games plus a $3 digital book. The cost of 7 games is less than the cost of 5 games plus a $3 digital book. The cost of 7 games is $3 greater than the price of 5 games. The cost of 7 games is greater than the cost of 5 games with a $3-off coupon.

1 answer:

ehidna [41]3 years ago

5 0

Answer:

the answer is The cost of 7 games is greater than the cost of 5 games plus a $3 digital book

Step-by-step explanation:

becuse 7>5+3 means 7 is greater

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In a study of 24 criminals convicted of antitrust offenses, the average age was 60 years, with a standard deviation of 7.4 years

Alexxandr [17]

Answer: <u>56.9</u> years to <u>63.1</u> years.

Step-by-step explanation:

Confidence interval for population mean (when population standard deviation is unknown):

$\overline{x}\pm t_{\alpha/2}{\dfrac{s}{\sqrt{n}}}$

, where $\overline{x}$ = sample mean, n= sample size, s= sample standard deviation, $t_{\alpha/2}$ = Two tailed t-value for $\alpha$ .

Given: n= 24

degree of freedom = n- 1= 23

$\overline{x}$ = 60 years

s= 7.4 years

$\alpha=0.05$

Two tailed t-critical value for significance level of $\alpha=0.05$ and degree of freedom 23:

$t_{\alpha/2}=2.0687$

A 95% confidence interval on the true mean age:

$60\pm (2.0686){\dfrac{7.4}{\sqrt{24}}}\\\\\approx60\pm3.1\\\\=(60-3.1,\ 60+3.1)\\\\=(56.9,\ 63.1)$

Hence, a 95% confidence interval on the true mean age. : <u>56.9</u> years to <u>63.1</u> years.

5 0

4 years ago

In Exercise, solve the equation for k. <br> 22 = 32e-0.02k

lesya692 [45]

Answer:

18.6

Step-by-step explanation:

We are given that

$22=32e^{-0.02k}$

We have to find the value of k.

Divide by 32 on both sides then we get

$\frac{22}{32}=e^{-0.02k}$

$\frac{11}{16}=e^{-0.02k}$

Taking ln on both sides then we get

$ln\frac{11}{16}=-0.02k$

$lne=1$

$ln11-ln16=-0.02k$

$log\frac{m}{n}=logm-logn$

$2.398-2.77=-0.02k$

$-0.372=-0.02k$

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5 0

4 years ago

A TV and Washing machine were purchased for Rs 15000 each. If together, they are sold at Rs 35000, What is Profit and Profit%

Citrus2011 [14]

Given:

A TV and Washing machine were purchased for Rs 15000 each.

Together, they are sold at Rs 35000.

To find:

The profit and profit%.

Solution:

A TV and Washing machine were purchased for Rs 15000 each. So, the total cost price is

$C.P.=15000+15000$

$C.P.=30000$

Together, they are sold at Rs 35000. So, the selling price S.P. is 35000.

Now,

$Profit=S.P.-C.P.$

$Profit=35000-30000$

$Profit=5000$

And,

$Profit\%=\dfrac{Profit}{C.P.}\times 100$

$Profit\%=\dfrac{5000}{30000}\times 100$

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Therefore, the profit is Rs. 5000 and the profit percent is 16.67%.

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3 years ago

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den301095 [7]

Lets just say the number is equal to x.
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Add 3 to both sides
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Add 8x to boths sides
6x=-6
Divide Both Sides by -1
x=-1
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3 0

3 years ago

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gayaneshka [121]

Yes, your answers are correct.

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V = 1/3π(2²)(8) = 32π/3

We divide the volume of the sink, 2000π/3, by the volume of the cone:

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The diameter of the second conical cup is 8, so the radius is 4. The volume then is:

V = 1/3π(4²)(8) = 128π/3

Dividing the volume of the sink, 2000π/3, by 128π/3:

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3 years ago