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3 years ago

A tv has height:width in ratio 9:16. In a scale drawing the height is 4.5cm. What would the width be?

Mathematics

1 answer:

ehidna [41]3 years ago

6 0

$\frac{4.5}{width}=\frac{9}{16}\\\\cross\ multiply.\\16\times4.5=9(width)\\72=9(width)\\\boxed{width=8\ cm}$

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Six boys are comparing their heights. Andy is taller than Dan but shorter than Ethan. Bill is taller than Ethan and Frank. Frank

Alexxx [7]

List of boys from tallest to shortest is: Bill, Frank, Ethan, Andy, Dan, Cory

<h3>Solution:</h3>

Given that Six boys are comparing their heights

The six boys are Andy, Dan, Ethan, Bill, Frank, Cory

To find: List the boys from tallest to shortest

Andy is taller than Dan but shorter than Ethan

So the arrangement goes like this:

Ethan

Andy

Dan

Bill is taller than Ethan and Frank:

So Bill is taller than ethan. Thus the arrangement from tall to short is made as:

Bill

Ethan

Andy

Dan

Also bill is taller than frank. So frank can be placed anywhere below bill

But given that Frank is taller than Ethan. So frank can be placed above ethan

Now the arrangement goes like this:

Bill

Frank

Ethan

Andy

Dan

Cory is shorter than Dan.

So cory can be placed below Dan.

Thus final arrangement from tallest to shortest boys are:

Bill

Frank

Ethan

Andy

Dan

Cory

5 0

3 years ago

2x^2+3x+5=0 what are all the complex solutions? please i need help!!!

vesna_86 [32]

You'll want to use the quadratic formula:

-b (+/-) sqrt(b^2 - 4ac), all divided by 2a.

Under the square root you'll get:

-11

remember that the square root of -1 is i.

sqrt(-11) can be factored to sqrt(11*-1) and then sqrt(-1) * sqrt(11)

which becomes i*sqrt(11)

so your complex solution is:

-3 (+/-) (i*sqrt(11)), all over 4

4 0

3 years ago

Read 2 more answers

How to multiply 7985 times 490 times 39 times 2094 plz the couculator wont help

asambeis [7]

Answer:319530474900

6 0

4 years ago

Read 2 more answers

Translate into an inequality The quotient of y and 7 is greater than or equal to -19

Dafna11 [192]

Answer:

y/7 >/ -19

That middle sign is the greater than or equal to sign (couldn't find on keyboard)

Step-by-step explanation:

y divided by 7 is greater than or equal to -19

Quotient means divided by.

7 0

3 years ago

Help me please show your work

Rasek [7]

In the attachment, I have chosen Z = 4.

The arrows represent the addition or subtraction of the numbers that are combined with Z. A number added to Z moves the point to the right. A negative number added (or a positive number subtracted) moves the point to the left. The length of the arrow is the amount added. The arrows marked with "Z" are length 4, because Z is 4.

8 0

3 years ago