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3 years ago

Sample size of this?

Mathematics

1 answer:

Brilliant_brown [7]3 years ago

5 0

I think it’s 15 which is just the total number of x’s

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Emily attends a Film Festival. The admission fee is $10. Each movie ticket cost $5 each. Emily wants to determine how many movie

Rashid [163]

Answer:

Emily can buy 6 movie tickets after paying the admission fee

Step-by-step explanation:

Let x be the number of movie tickets

If each movie ticket costs 5 dollars then the cost of x movies will be 5x

And the admission fee will be a constant.

She has $40 in total

So the equation can be written as

$10+5x = 40\\5x = 40-10\\5x = 30\\\frac{5x}{5} = \frac{30}{5}\\x = 6$

Hence,

Emily can buy 6 movie tickets after paying the admission fee

7 0

2 years ago

Cuántos años tendre en 2030 si tengo 16 en 2022?

stepan [7]

¿Cuántos años tendre en 2030 si tengo 16 en 2022?

Resolvamos:

$\: \: {\sf \rightarrow2030 - 2022 = 82030−2022=8}$

$\: \: \sf \rightarrow16 + 8 = 2416+8=24$

Entonces, Tendrás 24 años en 2030.

Espero que te sirva, salu2!!!!

8 0

2 years ago

Hospital records show that a certain surgical procedure takes on an average 111.6 minutes with a standard deviation of 2.8 minut

Arisa [49]

Answer:

At least 37.74% of the procedures takes between 97.6 and 125.6 minutes

Step-by-step explanation:

The percentage is the area of the standard normal distribution curve between the values 97.6 and 125.6

The standard normal variate of the given data is found as

$Z=\frac{X-\overline{X}}{\sigma }$

Thus for the given values Z is calculated as under

$Z_1=\frac{97.6-111.6}{2.8}=-5$

Similarly for the other value we have

$Z_2=\frac{125.6-111.6}{2.8}=5$

Thus the area between the calculated values can be found from standard normal distribution table to be 37.74%

8 0

2 years ago

When Mr. Woodward went to his fridge to get the pizza he had bought, his kids have already eaten three-quarters of it. He wanted

dalvyx [7]

Answer:

1/8

Step-by-step explanation:

8 0

3 years ago

Solve l-20l - l7l PLEASE HELPP IM ON A TEST

tiny-mole [99]

Answer:

Step-by-step explanation:

|-20| = 20 (anything with | | is absolute value, which is always positive), |7| = 7, 20 - 7 = 13.

quick tip: when you see something like -|#|, that would be negative, but if you saw |-#|, it would be positive.

hope it helps lol

7 0

2 years ago