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2 years ago

The number which is divisible by both 3 and 9 is ______ *

Mathematics

1 answer:

Nesterboy [21]2 years ago

3 0

Answer:

30009

Step-by-step explanation:

if you look at the numbers (excluding the 0s) then you will see that 3 and 9 are numbers including which can always divide by itself, therefore it is 30009

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- Hector can throw a ball 50 feet

inysia [295]

Answer:

Step-by-step explanation:

hector(50)- lee(48)

5 0

2 years ago

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1. The function of lenses is based on the law of refraction. A light beam is traveling from the medium 1 where its speed is V1,

masha68 [24]

Answer:

The index of refraction for Medium 2 would be 1.25

Step-by-step explanation:

We have the following data:

Speed of light in Medium 1 = V₁

Speed of light in Medium 2 = V₂

The speed of Light in Medium 2 is related to speed of light in Medium 1 as:

V₂ = 0.8 V₁

Moreover, it is given that Medium 1 is air with index of refraction equal to 1. i.e.

n₁ = 1

We need to find the index of refraction for medium 2. Lets name it is as n₂.

Snell's law related the above mentioned 4 quantities by following relation:

The ratio of indices of refraction of 2 mediums is equivalent to the reciprocal of ratio of phase velocities in those 2 mediums. Mathematically, this can be written as:

$\frac{n_{1}}{n_{2}} = \frac{V_{2}}{V_{1}}$

Substituting the values we have gives us:

$\frac{1}{n_{2}}=\frac{0.8V_{1}}{V_{1}} \\\\\frac{1}{n_{2}}=0.8\\\\ 1=0.8n_{2}\\\\\frac{1}{0.8}=n_{2}\\\\ n_{2}=1.25$

This means, the index of refraction for Medium 2 would be 1.25

3 0

3 years ago

What is 4.75 as a mixed number in simplest form?

Hunter-Best [27]

4.75=4+0.75

0.75=0.75/1=7.5/10=75/100=3/4

4 and 3/4

5 0

2 years ago

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N+(-n) = 3+ 15<br><br> Solve

Len [333]

Answer:

no solutions

Step-by-step explanation:

n+(-n) = 3+ 15

n+-n = 0

0= 18

False

There are no solutions

7 0

3 years ago

A right triangle has a base of 11 yards and a height of 7 yards . If you were to construct a similar but not congruent right tri

Dimas [21]

Answer:

bae of 44 yds and a height of 28 yds

Step-by-step explanation:

11x7 = 88 yd^2 = area of small triangle

616/88 = 16 so the larger triangle area is 16 times larger than the smaller triangle.

The area of a triangle is not proportional to it's dimensions. An increase of 16 times the area only increases the dimensions by 4 times.

larger triangle dimensions are 11 x 4 = 44 and 7 x 4 = 28

5 0

2 years ago