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3 years ago

(PICTURE PROVIDED) A: 1 unit B: 2 units C: 3 units D: 4 units

Mathematics

1 answer:

Y_Kistochka [10]3 years ago

3 0

Answer:

Looks like 3 units if not try 4 units

Step-by-step explanation:

Hope this helps

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An FM radio station broadcasts at 84 megahertz (MHz). What is the energy of each photon in Joule? Use h = 6.6 * 10 ^ (- 34) * j

iragen [17]

Answer:

$E=5.544*10^{-26} J$

Step-by-step explanation:

The equation for photon energy is given by:

$E=hf$

Where:

$h=Planck\hspace{3}constant=6.6*10^{-34} \\f=Frequency\hspace{3}of\hspace{3}the\hspace{3}wave=84000000Hz$

This equation telling us that the higher the frequency of the photon, the greater its energy. And the longer the photon wavelength, the lower its energy.

So, replacing the data provided in the previous equation:

$E=(6.6*10^{-34} )*(84000000)=5.544*10^{-26} J$

7 0

3 years ago

DOES ANYONE KNOW THE ANSWER?????????

givi [52]

There's only information to answer question C.

We can only know that 32 marbles were chosen. (yellow and black)

Why?

To answer the first two questions (a and b), we need to know the total number of marbles, so, we can only answer the last question (c).

We know that 7/10 of the 20 yellow marbles were chosen.

So, calculating we have:

$\frac{7}{10}*20=14(yellow)$

Also, we know that 18 black marbles were chosen, so, the total of marbles chosen is equal to 32 (yellow marbles and black marbles)

$TotalMarbles=14(yellow)+18(black)=32marbles$

Have a nice day!

8 0

3 years ago

Help and show explanation please

Dennis_Churaev [7]

The picture can be divided into 2 same triangles and one rectangular.

The triangle areas is {1/2 *base * height}*2 (because 2 same triangles)

and you need to sum rectangular area (width * base).
The result will be area of 2 triangle +area of rectangular.
=2(1/2*base of triangle* height)+ (base of rectangular * height)
= (base of triangle* height)+(base of rectangular * height)
=(base of triangle +base of rectangular)*height

b1 is top length
b2 is bottom length, and so

Base of triangle =(b1-b2/2)
Base of rectangular =b2
Height =h
Thus A ={(b1-b2/2)+b2 }*h
A= [(b1+b2)/2]*h

8 0

2 years ago

The total income from the sale of cheeseburgers was what percent greater in 2004 than in 2003?

sveticcg [70]

$\bf \begin{array}{|c|c|c|ll} \cline{1-3} year&quantity&price\\ \cline{1-3} 2003&Q&P\\&&\\ 2004&20\%Q+Q&\\&&\\ &\frac{20}{100}Q+Q&\\&&\\ &1.2Q&\\&&\\ &&10\%P+P\\ &&\frac{10}{100}P+P\\&&\\ &&1.10P\\ \cline{1-3} &&\\ &(1.2Q)&(1.10P)\\ \cline{1-3} \end{array}\qquad \begin{array}{llll} \stackrel{\textit{revenue for 2003}}{(Q)(P)}\implies QP\\\\ \stackrel{\textit{revenue for 2004}}{(1.2Q)(1.10P)}\implies 1.32QP \end{array}$

7 0

3 years ago

The Ellisons have insured their home for $890,000. Their personal property

Artemon [7]

Answer:

19000 8000 90000 60000

Step-by-step explanation:

4 0

3 years ago