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OlgaM077 [116]
3 years ago
7

3. a Paul is thinking of a number that is greater than 10 and less than 20. What is the probability

Mathematics
1 answer:
Mumz [18]3 years ago
4 0
10/100, 10 numbers are prime and within 10 and 20 there are 100 #’s that are fractions
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Mark, Jessica, and Nate each downloaded music from the same website. Mark downloaded 10 songs in total consisting of pop, rock,
PtichkaEL [24]

Answer:

Mark:

x + y + z = 10

Jessica:

5x + 2y + 3z = 28

Nate:

3x + 3y + z = 20

Step-by-step explanation:

Let

x = number of pop song downloaded by Mike

y = number of rock song downloaded by Mike

z = number of hip song downloaded by Mike

Mark downloaded 10 songs in total consisting of pop, rock, and hip hop

Mark:

x + y + z = 10

Jessica downloaded five times as many pop songs, twice as many rock schgs, and three times as many hip hop songs as Mark. She downloaded 28 songs total.

Jessica:

5x + 2y + 3z = 28

Nate downloaded 20 songs total with three times as many pop songs, three times as many rock songs, and the same number of hip hop songs as Mark.

Nate:

3x + 3y + z = 20

The following system of equations represents their music choices

Mark:

x + y + z = 10

Jessica:

5x + 2y + 3z = 28

Nate:

3x + 3y + z = 20

6 0
3 years ago
The time, t, required to drive a certain distance varies inversely with the speed, r, if it takes 7 hours to drive the distance
user100 [1]
Inverse functions will be given by the following equation:

t * r = k

k is a constant value that the two variables must multiply to.

Plug in your t and r values:

7 * 55 = 385

k = 385.

Now we'll have to find a value that multiplies with 65 to equal 365.

Set up the following equation:

x * 65 = 385

This equation can also be treated as the following:

65x = 385

Divide both sides by 385 to get x by itself:

x = 5.92

The answer is C. about 5.92 hrs to drive the same distance of 385 miles.
6 0
3 years ago
Onondaga Electronics operates on a net-profit rate of 20% on its printer cables. If the markup is $8.95 and the overhead is $4.3
asambeis [7]

Answer:

The selling price be $79.56 .

Step-by-step explanation:

Let us assume that the cost price be x.

As given

If the markup is $8.95 and the overhead is $4.31 .

Selling price = Cost price + Markup price + Overhead price

                    =  x + 8.95 + 4.31

                    = x + 13.26

Profit = Selling price - Cost price

         =  x + 13.26 - x

         = $ 13.26

Formula

Profit\ percentage = \frac{Profit\times 100}{Cost\ price}

Putting the values in the above formula

20= \frac{13.26\times 100}{x}

x= \frac{13.26\times 100}{20}

x= \frac{1326}{20}

x = $ 66.3

Thus cost price be $66.3 .

Thus

Selling price =  $66.3 + $13.26

                     = $ 79.56

Therefore the selling price be $79.56 .


5 0
3 years ago
Does anyone know how to simplify? 5y(2y-3) + (2y-3) = ?
mamaluj [8]

Hey there!!

The given equation :

... 5y ( 2y - 3 ) + ( 2y - 3 )

Let's write this as ...

... 5y ( 2y - 3 ) + 1 ( 2y - 3 )

Now, if we take ( 2y - 3 ) as a common term, we get...

... ( 5y + 1 ) ( 2y - 3 )

Hence, the correct answer would be option ( A )

Hope my answer helps!!

4 0
3 years ago
How much does a bracelet with three charms cost?
Delvig [45]

Answer:

65 + 25(3)

65 + 75

140

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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