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3 years ago

A cell phone plan costs $200 to start. then there is a $50 charge each month.

Mathematics

1 answer:

lions [1.4K]3 years ago

6 0

Answer:

y=50(12)+200

Step-by-step explanation:

y=50(12)+200

let monthly fee=m(50)

let the number of months=x

let the one time fee=b

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Harriet lives on the ground level of her apartment building. The level she lives on is repersented as by?

sattari [20]

Answer:

zero

Explanation:

In any system:

the ground (base) is referred to as zero lever

what comes above the ground level would be positive

what comes below the ground level would be negative

Now, we are given that:

she lives on the ground floor.

Based on the above, the representation would simply be zero

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3 years ago

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How many 1/2cups are in 7/8cups

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Answer:

Step-by-step explanation:

7/8) / (1/2) .when dividing fractions, flip what u r dividing by, then multiply

7/8 * 2 = 14/8 = 1 3/4 <==

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3 years ago

what is the probability of seeing a sample mean for 21 observations less or equal to the sample mean that we observed

kramer

Answer:

$P(x \le 21) = 0.69146$

Step-by-step explanation:

The missing parameters are:

$n = 64$ --- population

$\mu = 20$ --- population mean

$\sigma = 16$ -- population standard deviation

Required

$P(x \le 21)$

First, calculate the sample standard deviation

$\sigma_x = \frac{\sigma}{\sqrt n}$

$\sigma_x = \frac{16}{\sqrt {64}}$

$\sigma_x = \frac{16}{8}$

$\sigma_x = 2$

Next, calculate the sample mean $\bar_x$

$\bar x = \mu$

So:

$\bar x = 20$

So, we have:

$\sigma_x = 2$

$\bar x = 20$

$x = 21$

Calculate the z score

$x = \frac{x - \mu}{\sigma}$

$x = \frac{21 - 20}{2}$

$x = \frac{1}{2}$

$x = 0.50$

So, we have:

$P(x \le 21) = P(z \le 0.50)$

From the z table

$P(z \le 0.50) = 0.69146$

So:

$P(x \le 21) = 0.69146$

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3 years ago

Find the slope and the y intercept. Then use them to graph the line.

Margarita [4]

Answer:

The photo above show you how to graph it.

The equation is y=2x-3

Step-by-step explanation:

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2 years ago

In Las Vegas, Nevada, stores charge a 4.6% state sales tax and a 3.65% county sales tax. Yuki is purchasing a handbag priced at

Vitek1552 [10]

Yuki pays tax at a rate 4.6% + 3.65% = 8.25%

The total tax on the handbag is

.0825 (220) = $18.15

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3 years ago

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