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2 years ago

Under her cell phone plan, Ellie pays a flat cost of $50 per month and $5 per

Mathematics

1 answer:

erastovalidia [21]2 years ago

6 0

Answer:

She can use 4GB of data

You keep on adding five dollars on top of 50 until you reach 70.

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An express train travels 80km/h from Ironton to Wildwood. A local train, traveling at 48km/h, takes 2 hours longer for the same

masha68 [24]

Answer:

They are 240 kilometers apart.

Step-by-step explanation:

This question can be solved using the following relation:

$v = \frac{d}{t}$

In which v is the velocity, d is the distance and t is the time.

An express train travels 80km/h from Ironton to Wildwood.

Here we have $v = 80, t = x$ . So

$v = \frac{d}{t}$

$80 = \frac{d}{x}$

$d = 80x$

A local train, traveling at 48km/h, takes 2 hours longer for the same trip.

This means that when $v = 48, t = x + 2[tex]. So[tex]v = \frac{d}{t}$

$48 = \frac{d}{x+2}$

Since $d = 80x$

$48 = \frac{80x}{x+2}$

Applying cross multiplication

$80x = 48(x + 2)$

$80x = 48x + 96$

$32x = 96$

$x = \frac{96}{32}$

$x = 3$

So the distance is:

$d = 80x = 80*3 = 240$

They are 240 kilometers apart.

3 0

2 years ago

Find the x and y intercepts of the equation 8x+y=-9

Juliette [100K]

Answer:

see explanation

Step-by-step explanation:

To find the intercepts, that is where the graph crosses the x and y axes.

• Let x = 0, in the equation for y-intercept

• Let y = 0, in the equation for x-intercept

x = 0 : 0 + y = - 9 ⇒ y = - 9 ⇒ (0, - 9 ) ← y- intercept

y = 0 : 8x + 0 = - 9 ⇒ x = - $\frac{9}{8}$ ⇒ ( - $\frac{9}{8}$ , 0) ← x- intercept

7 0

2 years ago

Sebastian used the table and correctly identified that the data does not represent a logarithmic function. What information did

Lelechka [254]

Answer:

D. The table shows two x-intercepts and it changes from increasing to decreasing.

Step-by-step explanation:

A logarithmic function isn't either of these. This is the correct answer of ed-genuity. Hope this helped! :)

8 0

3 years ago

Read 2 more answers

high contrast toggle How many window coverings are necessary to span 50 windows if each window covering is 15 windows long?

raketka [301]

We know that
<span>If each window covering covers 15 windows, and there are a total of 50 windows to be covered,
it will take -------> 50/15=3.33 windows coverings
</span>So,
you need more than 3 coverings,
and so take the next whole number --------> 4 window coverings

the answer is
4 window coverings

5 0

2 years ago

Out of the 12 girls who tried out for the softball team, 10 will be chosen for the team. Find the number of different 10-person

olga nikolaevna [1]

Answer:

The answer is 66 ways .

Step-by-step explanation:

You have to use <u>Combination</u> because it says choosing 10 out of 12 as the position is not important :

12C10 = 66 ways of arrangements

8 0

3 years ago