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djverab [1.8K]
3 years ago
13

Sheila buys some boxes of pens, with 20 pens in each box. Which expression represents the total number of pens Sheila bought? 20

p 20 ÷ p 20−p 20 + p
Mathematics
1 answer:
Mazyrski [523]3 years ago
7 0
The answer is 20p. P represents the number of boxes she buys and 20 is how many pens are in each box.
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Please give me the correct answer.​
Agata [3.3K]

Answer:

The first graph.

Step-by-step explanation:

Algebra Calculator.

8 0
3 years ago
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community group bought 30 tickets to an amusement park at a total cost of $810. They bought x student tickets for $25 each and y
Zina [86]

it would be 18 student tickets and 12 adult tickets

18x25= 450

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360+450 = 810

4 0
3 years ago
if a sample size 40 is drawn from the population that has mean 276 and a variance of 81, what is the probability that the mean o
lapo4ka [179]

Answer:

The probability is 0.017429

Step-by-step explanation:

We start by calculating the z-score

Mathematically;

z-score = (x-mean)/SD/√n

In this case;

x = 273

mean = 276

SD = √(variance) = √81 = 9

n = 40

Substituting these values into the z-score formula, we have that;

z = (273-276)/9/√40

z = -2.11

So we proceed to get the probability

the probability in this case is;

P( z < -2.11)

We can use the normal distribution table for this

Our answer will be

P( z < -2.11) = 0.017429

4 0
3 years ago
: Santiago realizó los siguientes movimientos en su Cuenta bancaria: el lunes consignó $300.000, el martes retiró $120.000, el m
butalik [34]

Answer:

Step-by-step explanation:

Los movimientos bancarios de Santiago se representan matemáticamente teniendo en cuenta que consignar es sumar y retirar el restar. Por lo tanto podes expresar los movimientos bancarios de la siguiente manera:

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  • Martes → -120.000
  • Miércoles → -95.000
  • Jueves → +80.000

Al realizar la sumatoria se obtiene:

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En la semana Santiago obtiene en su cuenta bancaria $165.000

8 0
3 years ago
Megan has a pen for her dog the dimensions of the pen are in meters
Alex73 [517]
So measure the pen in meters
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3 years ago
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