3 years ago

What is 3 miles and 4,221 feet divided

Mathematics

1 answer:

xeze [42]3 years ago

5 0

Answer:

1407 feet per mile

Step-by-step explanation:

Each mile is 1407 feet.

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Simplify: − (sq root)16x2 if x<0.

Sever21 [200]

Step-by-step explanation:

$- \sqrt{16 {x}^{2} } \\ = - 4x$

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3 years ago

Convert 0.45 to a percent. Remember to add the percent sign.<br> 0.45%<br> 4.5%<br> 45%<br> 50%

notka56 [123]

45% is the answer to this question

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2 years ago

Suppose you have $12,000 to invest. If part is invested at 10% and the rest at 15%, how much should be invested at each rate to

Ivahew [28]

X=invested at 10%12000-x=invested at 15% .10x+ (.15)(12000-x)=1440 ;; 12% of the total amount is 12% of $12000. .10x + 1800-.15x=1440
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3 years ago

Sandra normally takes 2 hours to drive from her house to her grandparents' house driving her usual speed. However, on one partic

Rudiy27

Answer:

Her usual driving speed is 38 miles per hour.

Step-by-step explanation:

We know that:

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

In which s is the speed, in miles per hour, d is the distance, in miles, and t is the time, in hours.

We have that:

At speed s, she takes two hours to drive. So

$s = \frac{d}{2}$

$d = 2s$

However, on one particular trip, after 40% of the drive, she had to reduce her speed by 30 miles per hour, driving at this slower speed for the rest of the trip. This particular trip took her 228 minutes.

228 minutes is 3.8 hours. So

$0.4s + 0.6(s - 30) = \frac{d}{3.8}$