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rodikova [14]
4 years ago
10

A driver who drives at a speed of r mph for t hr will travel a distance d mi given by dequalsrt mi. How far will a driver travel

at a speed of 57 mph for 8 ​hr?
Mathematics
1 answer:
liubo4ka [24]4 years ago
5 0

Answer:

At a speed of 57 mph for 8 hr a driver will travel 456 mi

Step-by-step explanation:

Here we have a summary of the letters for each variable:

Speed ---> r          (in units of mph)

Time ---> t            (in units of hr)

Distance ---> d     (in units of mi)

These three variables are related by the next formula:

d = rt

In the data they give to you: 57 mph and 8 hr, they are telling you the r and the t, respectively:

r = 57 mph

t = 8 hr

The only thing you have to do is replace the values:

d = rt    ---->     d = 57 mph x 8 hr

                        d = 456 mi

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NEED HELP ASAP WILL GIVE BRAINLIEST REAL ANSWERS ONLY PLZ WILL REPORT FAKE ANSWERS
BlackZzzverrR [31]

Answer:

Option C. f(n) = 16(3/2)⁽ⁿ¯¹⁾

Step-by-step explanation:

To know which option is correct, do the following:

For Option A

f(n) = 3/2(n – 1) + 16

n = 1

f(n) = 3/2(1 – 1) + 16

f(n) = 3/2(0) + 16

f(n) = 16

n = 2

f(n) = 3/2(n – 1) + 16

f(n) = 3/2(2 – 1) + 16

f(n) = 3/2(1) + 16

f(n) = 3/2 + 16

f(n) = 1.5 + 16

f(n) = 17.5

For Option B

f(n) = 3/2(16)⁽ⁿ¯¹⁾

n = 1

f(n) = 3/2(16)⁽¹¯¹⁾

f(n) = 3/2(16)⁰

f(n) = 3/2 × 1

f(n) = 1

For Option C

f(n) = 16(3/2)⁽ⁿ¯¹⁾

n = 1

f(n) = 16(3/2)⁽¹¯¹⁾

f(n) = 16(3/2)⁰

f(n) = 16 × 1

f(n) = 16

n = 2

f(n) = 16(3/2)⁽ⁿ¯¹⁾

f(n) = 16(3/2)⁽²¯¹⁾

f(n) = 16(3/2)¹

f(n) = 16(3/2)

f(n) = 8 × 3

f(n) = 24

n = 3

f(n) = 16(3/2)⁽ⁿ¯¹⁾

f(n) = 16(3/2)⁽³¯¹⁾

f(n) = 16(3/2)²

f(n) = 16(9/4)

f(n) = 4 × 9

f(n) = 36

For Option D

f(n) = 8n + 8

n = 1

f(n) = 8(1) + 8

f(n) = 8 + 8

f(n) = 16

n = 2

f(n) = 8n + 8

f(n) = 8(2) + 8

f(n) = 16 + 8

f(n) = 24

n = 3

f(n) = 8n + 8

f(n) = 8(3) + 8

f(n) = 24 + 8

f(n) = 32

From the above illustration, only option C describes the sequence.

3 0
3 years ago
During Samuel’s experiment, the experimental probability was 0.25. What else must be true about the experiment?
antiseptic1488 [7]

Answer:

The experimental probability of the outcome is 1/4

Step-by-step explanation:

If Samuel's experiment probability was 0.25, this depicts that the experimental probability of the outcome is 1/4, because:

1/4=0.25

It's not the theoretical probability, because Samuel's developed an experiment, it cannot be theoretical, he has experimental evidences.

5 0
3 years ago
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WILl GIVE BRAINLIEST IF YOU SHOW THE STEPS!!!
True [87]

Answer:

\frac{9x}{y^3}

Step-by-step explanation:

\frac{\left(3x^2y^4\right)^3}{3x^5y^{15}}

(3x^2y^4)^3 : 3^3x^6y^1^2

= \frac{3^3x^6y^{12}}{3x^5y^{15}}

\frac{3^{3} }{2} = 3^{2}

= \frac{3^2x^6y^{12}}{x^5y^{15}}

= \frac{x^{6} }{x^{5} } : x

= \frac{3^2xy^{12}}{y^{15}}

=  \frac{y^{12} }{y^{15} } : \frac{1}{3{y} }

= \frac{3^2x}{y^3}

3^2=9

= \frac{9x}{y^3}

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3 years ago
Does the table represent exponential growth or exponential decay?
Vitek1552 [10]

Answer:

Step-by-step explanation:

y=ar^x

(ar^5)/(ar^3)=72/432

r^2=1/6

Since r^2 < 1

This is exponential decay.

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3 years ago
All parallelograms have two pairs of opposite sides that are parallel and all squares are parallelograms. Based on this descript
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The answer is A. All statements are true but based on description, only A applies here.
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