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3 years ago

Is there a proportional relationship between x and y? Explain.

Mathematics

2 answers:

myrzilka [38]3 years ago

7 0

as x increases, y increases and as x decreases, y decreases-and that the ratio between them always stays the same.

netineya [11]3 years ago

3 0

Answer:

Where's the question?

Step-by-step explanation:

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3 years ago

In the function f(x) = 4(x2 − 6x + ____) + 20, what number belongs in the blank to complete the square?

Shkiper50 [21]

Hello :
f(x) = 4(x2 − 6x + 3² - 3²____) + 20 = 4((x2 − 6x + 3²) - 3²____) + 20<span>
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3 years ago

Mentalmath grade 3 $1.00-$0.37

Mkey [24]

Answer:

$0.63

Step-by-step explanation:

6 0

3 years ago

In 1985, there were 285 cell phone subscribers in Arlington. The number of subscribers increased by 75% per year since 1985. Fin

ANTONII [103]

Answer:

The number of subscribers in 2008 is 110,845,988

Step-by-step explanation:

The number of cell phone subscribers in Arlington, in t years after 1985, can be modeled by the following equation.

$N(t) = N(0)(1+r)^{t}$

And which N(0) is the number of subscribers in 1985 and r is the rate it increases per year, as a decimal.

In 1985, there were 285 cell phone subscribers in Arlington.

This means that $N(0) = 285$

The number of subscribers increased by 75% per year since 1985.

This means that $r = 0.75$

$N(t) = 285(1.75)^{t}$

Find the number of subscribers in 2008.

2008 is 2008-1985 = 23 years after 1985. So we have to find N(23).

$N(23) = 285(1.75)^{23} = 110,845,988$

The number of subscribers in 2008 is 110,845,988

8 0

3 years ago

A car travels a distance of 230 miles in a time of 4.2 hours. What is its average speed rounded to 1dp?

zhannawk [14.2K]

Its average speed rounded to 1dp is 54.76 miles per hour.

<h3>Average speed</h3>

Using this formula

Average speed=Distance/Time

Where:

Total Distance =230 miles

Time= 4.2 hours

Let plug in the formula

Average speed=230/4.2

Average speed=54.76

Inconclusion Its average speed rounded to 1dp is 54.76 miles per hour.

Learn more about average speed here:brainly.com/question/4931057

5 0

3 years ago

Read 2 more answers