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Alexeev081 [22]
2 years ago
12

A boat travels 400 miles at a rate of 20 miles per hour. How many hours did it travel?

Mathematics
2 answers:
Taya2010 [7]2 years ago
7 0

Answer:

Time taken = 20 hours

Step-by-step explanation:

Speed  = distance travelled / time taken

20 mi/hr = 400 mi / time taken

Time taken = 400 mi / 20

Time taken = 20 hours

UNO [17]2 years ago
6 0

Answer:

20 hours

Step-by-step explanation:

400 divided by 20 is 20

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Enter the simplified form of the complex fraction in the box.
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The problem is:

\frac{\frac{3}{x}+\frac{1}{4}}{1+\frac{3}{x}}

We now do L.C.M. of numerator and add, also do L.C.M. of denominator and add together:

\frac{\frac{12+x}{4x}}{\frac{x+3}{x}}

Dividing by a fraction is same as multiplying by its reciprocal, so we have:

\frac{12+x}{4x} * \frac{x}{x+3} \\

x cancels out, so can multiply and write:

\frac{12+x}{4} * \frac{1}{x+3} \\=\frac{12+x}{4x+12}

This is the simplified form.


ANSWER: \frac{12+x}{4x+12}

3 0
3 years ago
One number is 3 more than another number. if you add 12 to 4 times the first number, the result is 5 times the second number. Fi
aleksklad [387]

Answer:

first is -3, second number is 0

Step-by-step explanation:

you have two equations x+3=y and 4*x+12=5*y

Use the first one and write y in terms of x in the second equation:

4*x+12=5*(x+3)

4*x+12=5*x+15

12=5*x-4*x+15

12=x+15

x=-3

3 0
3 years ago
What are the solutions of x^2-2x+17=0
andriy [413]

Answer:

This equation has no real solutions, because the discriminant is less than zero.

Step-by-step explanation:

no solution

5 0
3 years ago
Why did the football coach send in his second string
Bond [772]
Too get them too work harder or sonner
7 0
3 years ago
50 points to the first answer, will be checking the answers
melamori03 [73]

Answer:

.998543

9.92749

sqrt(101)

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Step-by-step explanation:

10 pi is approximately 10 * 3.14 = 31.4

.998543 is less than 1

9.927

sqrt(101) is a little more than sqrt(100)  which is 10

Smallest .998543

9.92749

sqrt(101)

10 pi

6 0
3 years ago
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