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aniked [119]
2 years ago
11

The speed of a boat in still water is 10 km/hr. If it can travel 78 km downstream and 42 km upstream in the same time, the speed

of the stream is?
Mathematics
1 answer:
OLga [1]2 years ago
6 0

Answer:

umm let me look at this one more time then I will answer:)

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prohojiy [21]

Answer:

{-1, -2, -3, -4}

Step-by-step explanation:

The domain is the set of all x-values.

8 0
2 years ago
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The number of patients who reported that a new drug had relieved their pain. discrete or continuous?
solong [7]

Answer:

Continuously

Step-by-step explanation:

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3 years ago
A see-saw is 25 feet long with a fulcrum in the middle of the board. If a 60 lb. child sits three feet from the fulcrum, what is
My name is Ann [436]

Answer:

14.4 lb

Step-by-step explanation:

In a see-saw in equilibrium, the torque generated by one side needs to be the same generated in the other side. The torque is calculated by the product between the mass and the distance to the center of the see-saw.

The torque generated by the child is:

T1 = 60 * 3 = 180 lb*feet

So, the torque generated by the weight needs to be higher than T1 in order to lift the child.

The lowest mass is calculated when the mass is in the maximum distance, that is, 12.5 feet from the center.

So, we have that:

T2 = 180 = mass * 12.5

mass = 180/12.5 = 14.4 lb

So the lowest weight is 14.4 lb

4 0
3 years ago
How many positive two digit numbers are divisible by 4?
frutty [35]
There are 24 positive 2 digit numbers divisible by 4.

4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96
4 0
3 years ago
When Tom purchased a new motorcycle, he paid a 5% sales tax. The amount of sales tax he paid was $265. What was the total cost o
Kryger [21]
Net Amount (excluding tax) : $5,300.00
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Gross Amount (including tax) : $5,565.00

Math:
5300.00 \times .05 = 265.00
5300.00 + 265.00 = 5565.00
8 0
3 years ago
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