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3 years ago

I will give you brainliest if you help me with this

Mathematics

2 answers:

sveta [45]3 years ago

5 0

Answer:

a.0.25

b.15/100=3/20

c.17*100/40=1700/40=42.5%

Oksi-84 [34.3K]3 years ago

5 0

ohkkk

decomposition reaction is a reaction in which one compounds breaks out to form two or more products .

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You have just bought a new television and it has an aspect ratio of 16:9. The screen on the television is 65 inches. What is the

dem82 [27]

Answer:

Width of T.V. is 21.94 inches Height is 39 inches and area is 855.66 square inch.

Step-by-step explanation:

When we buy an electronic item like T.V or Blue Ray aspect ratio is the term which is used by the salesmen or technicians. Aspect ratio is actually the ratio of length and breadth of the screen of a device or ration of width and height.

In this question aspect ratio of television is given as 16:9

This can be written as $\frac{W}{H}=\frac{16}{9}$ or $W=\frac{16}{9} H$

Screen of the T.V. is 65 inch which is the diagonal length of the screen.

We know from pythagoras theorem in a right angle triangle

$(diagonal)^{2}=(base)^2+(height)^2$

$(65)^2=(Base)^2+(height)^2$

$(65)^2= W^2+H^2 = (\frac{16}{9}H)^2+H^2$

$(65)= \sqrt{\frac{16}{9}H^2+H^2}\\ 65=H\sqrt{\frac{16}{9}+1}\\ 65=H\sqrt{\frac{25}{9}}\\ 65=\frac{5}{3}H\\ H=39 inches$

Now height of the T.V.will be

$\frac{W}{H}=\frac{16}{9} \\\\\frac{H}{W}=\frac{9}{16}\\ H=\frac{9}{16}W = (\frac{9}{16})39= 21.94 Inches$

now area of the T.V.=W×H=39×21.94=855.66 square inch

8 0

4 years ago

Read 2 more answers

14. Phyllis wants to hire a clown to entertain at her daughter's birthday party.

kaheart [24]

Answer:

C=25+5.50n

Step-by-step explanation:

C=25+5.50n where c is the total cost and n is the number of hours the clown entertains.

3 0

3 years ago

Please help me I promise I will mark Brainliest, I need an answer asap!!!!!!!! please hurry!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Fin

ValentinkaMS [17]

Answer:

Step-by-step explanation:

To find the inverse, all we have to do is switch the x and f(x) so instead of f(x) = 5x + 6, it becomes:

x = 5f(x) + 6

x - 6 = 5f(x)

f⁻¹(x) = (x - 6) / 5

6 0

3 years ago

Compare the modeld for one third and two sixths

DochEvi [55]

1/3 is equal to 2/6
This is because 1/3 converted to 6ths you have to multiply 1/3 times 2 which equals 2/6
1/3 = 2/6

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3 years ago

Approximately how many times greater is 9.75 * 10^6 than 1.25 * 10^2?

lapo4ka [179]

7.8 is the answer...

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3 years ago