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Viefleur [7K]
3 years ago
15

The cost of 5 pens is $140.50. What is the cost of 1 pen?

Mathematics
2 answers:
yuradex [85]3 years ago
8 0

Answer:

$28.1

Step-by-step explanation:

Divide

140.50 divided by 5 = 28.1

(That's an expensive pen)

nydimaria [60]3 years ago
5 0

Answer:

28.1

Step-by-step explanation:

140.50/5

These are some expensive pens

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A line passes through the point (-4,7) and has a slope of 5/2.
hoa [83]

Answer:

(9,20)

Step-by-step explanation:

9 and 20 together... (9,20)

8 0
3 years ago
What does 30 percent equal
Hunter-Best [27]

Answer:

0.3

Step-by-step explanation:

By definition: 30% = 30/100 = 0.3

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3 years ago
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Is 23/100 a rational number
Anna35 [415]

Answer:

YES

Step-by-step explanation:

A rational number is a number that can be expressed as the quotient or fraction p/q of two integers

- 23 and 100 are both integers

- 23 / 100 = 0.23 which is not a continious decimal

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2 years ago
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4x2 + 4x =- 4<br> Find the solutions to the Quadratic equation.
VashaNatasha [74]

Answer:

x=-3

Step-by-step explanation:

(4)(2) + 4x = -4

                   multiply the 4 and 2

8 + 4x = -4

                   subtract 8 from both sides

4x = -12

                   divide both sides by 4

x = -3

7 0
3 years ago
The following data was collected from a simple random sample of a population.
aivan3 [116]

Answer:

C

Step-by-step explanation:

This problem is analogous to the extraction of 6 elements from a total of 10 elements. It's the same if they are marbles, chips, or in this case, people, as here we don't care about the order of the selection as we only are drawing a sample.

Thus, the problem implies solving the amount of possible combinations of 10 people if we take by 6. There is a formula for this and is:

10 C 6 = 10!(6!4!)

If we operate, knowing that for any number x, x!=x*(x-1)*(x-2)*...*1

10 C 6 = 10!(6!4!) = 10*9*8*7*6*...*1 / [(6*5*...*1) * (4*3*2*1)]

10 C 6 = 10*9*8*7*6! / [(6*5*...*1) * (4*3*2*1)]

We have a 6! multiplying and another dividing, so they get eliminated, and as 4*2=8 and 9=3*3

10 C 6 = 10*9*8*7*/ [(4*3*2*1)] = 10*3*3*8*7*/ [(8*3*1)]

We can eliminate the 8s and one of the 3s on the numerator with the one on the denominator:

10 C 6 = 10*3*7*/1 = 210/1= 210

So, option C

5 0
3 years ago
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