3 years ago

PLEASE HELP NEED IT TURNED IN SOON!!!

Mathematics

2 answers:

Archy [21]3 years ago

6 0

Answer:

Step-by-step explanation:

I hope that helps I try

Vinvika [58]3 years ago

3 0

Answer:

Step-by-step explanation:D add the two and set equal to 180 to find x then plug x in

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689x+47x-89 dose anyone know how to solve this?

Korvikt [17]

Answer:

736x-89

Step-by-step explanation:

i think all you can do here is add the numbers that have an X in them so adding 689x+47x=736x and you leave the 89 so it becomes 736x-89

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Benjamin drove a distance of 301.5 miles in

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3 years ago

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Question Help

lorasvet [3.4K]

Answer:

The speed of the boat is 20 km/hr

Step-by-step explanation:

Let s be the speed of boat in still water

Let d be the distance

Upstream speed = s-4

Jane took 30 min to drive her boat upstream to water-ski at her favorite spot.

So, Distance traveled in upstream = $Speed \times time =(s-4) \times \frac{30}{60}$

Downstream speed = s+4

So, Distance traveled in downstream = $Speed \times time =(s+4) \times \frac{20}{60}$

So, $(s-4) \times \frac{30}{60}=(s+4) \times \frac{20}{60}$

30s-120=20s+80

10s=200

s=20

Hence The speed of the boat is 20 km/hr

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3 years ago