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2 years ago

One cell phone company offers a plan that costs $29.99 and includes unlimited night and weekend

Mathematics

1 answer:

tamaranim1 [39]2 years ago

8 0

Answer: 49.

It's 49 minutes

Step-by-step explanation:

I don't feel like explaining. It's 49 minutes.

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PLEASE ANSWER QUICK A manufacturing facility pays its employees an average wage of $4.50 an hour with a standard deviation of 50

evablogger [386]

Answer:

B.77.4%

Step-by-step explanation:

Mean wage (μ) = $4.50

Standard deviation (σ) = $0.50

For nay given salary X, the z-score is given by:

$z=\frac{X-\mu}{\sigma}$

For X = $3.75, the z-score is:

$z=\frac{3.75-4.50}{0.50}\\z=-1.5$

For X = $5.00, the z-score is:

$z=\frac{5.00-4.50}{0.50}\\z=1$

A z-score of -1.5 corresponds to the 6.68th percentile, while a score of 1 corresponds to the 84.13th percentile. Therefore, the percentage of workers getting paid between $3.75 and $5.00 an hour is:

$P=84.13-6.68\\P=77.45\%$

The answer is alternative B.77.4%

8 0

3 years ago

Miguel's teacher instructed him to graph the linear equation y = (3/5)x + 1. He

gladu [14]

I think it is C.) (3,6)

5 0

3 years ago

Frank paid $46 in tax on a laptop that cost $920. What percent sales tax did Frank pay?

Elena L [17]

Answer:

743627367867628718473867267462664772

Step-by-step explanation:

3 0

2 years ago

a circular oil slick is expanding at a rate of 2m^2/h. Find the rate at which it's diameter is expanding when it's radius is 1.5

aleksandrvk [35]

Answer: $\frac{4\pi}{3} \text{ meter per hour}$

Step-by-step explanation:

The circular oil slick is expanding at a rate of $2 m^2/h$

Let A be the area of the circular oil slick,

So, the changes in A with respect to time (t),

$\frac{dA}{dt} = 2$

$\frac{d(\pi r^2)}{dt} = 2$

$2\pi r\frac{dr}{dt} = 2$

$\frac{dr}{dt} = \frac{1}{\pi r}$

Also, the change in diameter with respect to time(t),

$\frac{d}{dt} (2 r) = 2 \frac{dr}{dt}$

$\frac{d}{dt} (2 r) = 2 \times \frac{1}{\pi r}$

$\frac{d}{dt} (2 r) = \frac{2}{\pi r}$

For r = 1.5 m,

$\frac{d}{dt} ( 2 r)]_{r=1.5} = \frac{2}{\pi \times 1.5}=\frac{20}{\pi \times 15}=\frac{4\pi }{3}\text{ meter per hour}$

7 0

2 years ago

If you work 8 hours every two days, how many hours will he work in 7 days

zubka84 [21]

Answer:

28 hours for 7 days

Step-by-step explanation:

8/2 =

4 hours for 1 day

1 x 7 =

7 x 4

28 for 7 days

6 0

2 years ago

Read 2 more answers