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Anettt [7]
3 years ago
8

For smart ppl who are good at graphs, inputs, and outputs.

Mathematics
1 answer:
Alecsey [184]3 years ago
5 0

Answer:

I believe the output is f(6) is -1, the output of f(2) is -4, and f(x)=-4 has the outputs of  2, 4, 8, and 10.

I think.

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Kala purchased a prepaid phone card for $15. Long distance calls cost $12 a minute using this card. Kala Use her card only once
irina [24]

Kala call lasted for 0.36 minutes

<em><u>Solution:</u></em>

Given that Kala purchased a prepaid phone card for $15

Long distance calls cost $12 a minute using this card.

If the remaining credit on her card is $10.68

To find: Number of minutes her call lasted

Let "x" be the number of minutes her call lasted

Cost of 1 minute = $ 12

Total balance = $15

Remaining balance = $ 10.68

So we can frame a equation as:

Total balance = Remaining balance + Cost of 1 minute x number of minutes her call lasted

15 = 10.68 + 12 \times x\\\\15 - 10.68 = 12x\\\\4.32 = 12x\\\\x = 0.36

So her call lasted for 0.36 minutes

4 0
3 years ago
Wanda and Kyle want to compare the worth of their baseball cards. Wanda has 80 baseball cards and Kyle has 110 baseball cards. S
chubhunter [2.5K]

Answer:

Mean

Step-by-step explanation:

If Wanda has 80 baseball cards and Kyle has 110 baseball cards. Given that they know the total value of all their individual base ball cards, the worth of each baseball card will be derived by dividing the Total Worth of the cards by the number of cards. This is an example of Mean. Therefore they should use Mean to compare the worth of the cards.

Illustrative Example

If the Total Value of their cards are $500,

For Wanda, Value Per Card= $500/80 Cards =$6.25 per card

Similarly,

For Kyle, Value Per Card= $500/110 Cards =$4.55 per card

So we can see from this illustration whose card is with an higher price using the mean.

5 0
3 years ago
Sweetie will feed the cat 4 oz of food each day for 10 days what is the smallest bag that has enough food for grammy cat
Lina20 [59]

Answer:

40 ounces

Step-by-step explanation:

Number of ounces per day to be consumed = 4 oz

The number of days = 10

The smallest bag that has enough enough food for the cats is one which has atleast :

Number of ounces consumed per day * number of days

4 oz * 10 = 40 ounces

5 0
3 years ago
Jack invested some money in a bank at a fixed rate of interest compounded annually. The equation below shows the value of his in
pochemuha

Answer:

<em>The average rate of change of Jack's investment from the third year to the fifth year is </em><em>$6.43</em>

Step-by-step explanation:

The function that defines the value of his investment after x years,

f(x)=300(1.02)^x

Putting the value of x as 3 and 5, we can get the value of his investment after 3 years and 5 years respectively.

So,

f(3)=300(1.02)^3=318.36

f(5)=300(1.02)^5=331.22

Then,

\text{Average rate of change}=\dfrac{f(x_2)-f(x_1)}{x_2-x_1}

=\dfrac{331.22-318.36}{5-3}

=\dfrac{12.86}{2}

=\$6.43

6 0
3 years ago
Read 2 more answers
Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the line x = 6. (Rou
aleksklad [387]

Answer:

Step-by-step explanation:

Here we have the curve xy =6 bounded by the line y=2, y=6 and x=6.

This region is rotated about x =6

We have to find the volume

Since rotated about vertical line parallel to y axis, shifting y axis to right by 6 units we get

the curve equation as

(6-x)y=6

6y-6xy =6

6xy =6(y-1)

x = (y-1)/y

and limits for y is 2 to y

Volume = \pi \int x^2 dy\\= \pi \int( \frac{y-1}{y})^2 dy\\ = \pi \int 1-2/y +1/y^2 dy\\= \pi (y-2ln y -1/y)

Substitute limits

Volume = \pi ( 4-2 ln 3 - 1/3)\\= \pi (11/3 -2ln 3)

8 0
3 years ago
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