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kiruha [24]
2 years ago
9

HELP PLSSSSSSS!!!!!!!!!

Mathematics
2 answers:
STatiana [176]2 years ago
8 0

Time = Distance /  speed

Time = 520 miles / 80 miles per hour

Time = 6.5 hours

aleksandr82 [10.1K]2 years ago
8 0

Answer:

6/1/2hours

Step-by-step explanation:

speed =80miles \: per \: hour \: distance \:  = 520miles \\ speed =  \frac{distance}{time}  \\ 80  =  \frac{520}{t}  \\  80t = 520 \\ t =  \frac{520}{80}  \\ t = 6  \frac{1}{2} hours \\

hope that this is helpful.

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What is the directrix of the parabola defined by `(1)/(4)(y + 3) = (x − 2)^2`?
Sauron [17]

The directrix of the parabola is y =  \frac {-49}{16}

<h3>How to determine the equation of the directrix?</h3>

The parabola equation is given as:

\frac 14(y + 3) = (x -2)^2

A parabola is represented as:

4p(y - k) =(x -h)^2

By comparing both equations, we have:

4p = 1/4 ==> p = 1/16

-k= 3 ==> k = -3

The directrix is represented as:

y = k - p

So, we have:

y = -3 - \frac 1{16}

Take the LCM

y =  \frac {-16 * 3- 1}{16}

Evaluate

y =  \frac {-49}{16}

Hence, the directrix of the parabola is y =  \frac {-49}{16}

Read more about parabola at:

brainly.com/question/1480401

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4 0
1 year ago
Solve y-12/25=3 1/5. What number is y?<br><br> A. 3 1/5<br> B. 3 17/25<br> C. 3 7/25<br> D. 4 17/25
kicyunya [14]

Answer:

Option c) y=3\frac{17}{25} is correct

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Step-by-step explanation:

Given equation is  

y-\frac{12}{25}=3\frac{1}{5}

To solve the given equation for y

y-\frac{12}{25}=3\frac{1}{5}

y-\frac{12}{25}=\frac{16}{5}  (converting mixed fraction to normal fraction )

y-\frac{16}{5}=\frac{12}{25}

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=\frac{80+12}{25}  (adding the terms )

y=\frac{92}{25}  (now convert fraction into mixed fraction )

Therefore y=3\frac{17}{25}

Option c) y=3\frac{17}{25} is correct

The value of y is 3\frac{17}{25}

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3 years ago
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levacccp [35]
The value of X is 27.

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36 / 24 = x / 18
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5 0
3 years ago
What is the answer?
sertanlavr [38]

Answer:

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Step-by-step explanation:

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He drove 219.375 miles more on the fist day than the second day.
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