3 years ago

A train travels 82 kilometers in 2 hours, and then 83 kilometers in 2 hours. What is its average speed?

Mathematics

1 answer:

Sholpan [36]3 years ago

4 0

41.25 kilometers per hour.

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B. 3y+1

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Common factor of 10 and5

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Common factors include: 5 and 1

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3 years ago

What is the solution to this equation 1/2n^2+18=0

ololo11 [35]

Answer:

n = ±6 .

Step-by-step explanation:

A quadratic equation is given to us and we need to find out the solution of the given equation . The given equation is ,

$\rm\implies -\dfrac{1}{2}n^2+18=0$

Subtracting 18 both sides ,

$\rm\implies -\dfrac{1}{2}n^2 = -18$

Multiplying both sides by -2 ,

$\rm\implies -2\times\dfrac{1}{2}n^2 = -2\times -18$

On simplyfing , we get ,

$\rm\implies n^2= 36$

Putting squareroot both sides ,

$\rm\implies n= \sqrt{36}$

This equals to ,

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3 years ago

A shop has 4 fruits (bananas, oranges, apples, and grapes) and 2 dips (peanut butter and caramel).

makvit [3.9K]

Answer:

total fruits and dips=4+2=6

P(select banana&peanut butter)=banana+peanut /total fruits and d

Step-by-step explanation:

total fruits and dips=4+2=6

P(select banana&peanut)=banana+peanut/total fruits and dips

P(select banana&peanut)=1+1=2/6

=1/3

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2 years ago