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2 years ago

A hiker walks at a speed of 3 2 5 kilometers per hour. How many kilometers will the hiker walk-in

Mathematics

2 answers:

denis-greek [22]2 years ago

4 0

Answer:

18.75km

Step-by-step explanation:

All you have to do is multiply the average speed times the time, in this case 5 hours. So it will look like this: 3 3/4x5.

Solve that, and you get 18.75 km. (in decimal form)

Hope that helps! Have a great day.

Leto [7]2 years ago

3 0

Answer:

65 km

Step-by-step explanation:

was that 325 km? if so it would be 325 x 5 = 65

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Answer:

Step-by-step explanation:

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3 years ago

What is the solution to 3x + 2.4 ≥ 3.0

vichka [17]

3x _> 3.0 - 2.4
= 3x _> 3/5
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3 years ago

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A 12 ft ladder is leaning against a building. The ladder makes a 45 degree angle with the building how far up is the building do

Ghella [55]

Answer:

The ladder reach a height 8.485 ft.

Step-by-step explanation:

The ladder with the building made right angle triangle

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4 0

3 years ago

8/x-5 - 9/x-4 = 5/x^2-9x+20

adelina 88 [10]

If you're using the app, try seeing this answer through your browser: brainly.com/question/2752942

_______________

Solve the equation:

$\mathsf{\dfrac{8}{x-5}-\dfrac{9}{x-4}=\dfrac{5}{x^2-9x+20}\qquad\qquad(x\ne 5~and~x\ne 4)}$

Reduce the fractions at the left side so that they have the same denominator:

$\mathsf{\dfrac{8(x-4)}{(x-5)(x-4)}-\dfrac{9(x-5)}{(x-4)(x-5)}=\dfrac{5}{x^2-9x+20}}\\\\\\
\mathsf{\dfrac{8x-32}{x^2-4x-5x+20}-\dfrac{9x-45}{x^2-4x-5x+20}=\dfrac{5}{x^2-9x+20}}\\\\\\
\mathsf{\dfrac{8x-32}{x^2-9x+20}-\dfrac{9x-45}{x^2-9x+20}=\dfrac{5}{x^2-9x+20}}\\\\\\
\mathsf{\dfrac{8x-32-(9x-45)}{x^2-9x+20}=\dfrac{5}{x^2-9x+20}}$

Numerators must be equal:

$\mathsf{8x-32-(9x-45)=5}\\\\
\mathsf{8x-32-9x+45=5}\\\\
\mathsf{8x-9x=5+32-45}\\\\
\mathsf{-x=-8}\\\\
\mathsf{x=8}\quad\longleftarrow\quad\textsf{this is the solution.}$

I hope this helps. =)

Tags: rational equation fraction solution algebra

7 0

2 years ago

Solve system by Substitution method, provide steps. y = 5x - 18 -5x+6y = 17

Sedaia [141]

Answer:

x=5

Step-by-step explanation:

-5x+6(5x-18)=17

-5x+30x-108=17

25x-108=17

25x=17+108

25x=125

x=5

5 0

3 years ago