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zubka84 [21]
3 years ago
9

Sally painted a picture that has an area of 480 square inches. The length of the painting is 1 1/5 its width. Which of the follo

wing could be the dimensions of Sally’s painting? A. 20 inches by 24 inches B. 12 inches by 40 inches C. 16 inches by 30 inches D. 15 inches by 32 inches
Mathematics
1 answer:
prohojiy [21]3 years ago
5 0
A = 480
W = x
L = 11/5*x
therefore 480 = 11/5*x*x
480 = 11/5x^2
480*5 = 11x^2
2400/11 = x^2
+ or-\sqrt{2400/11} = x
However we can't have a negative width so width is \sqrt{2400/11}
Sub this into the length equation to find length \frac{11}{5} *  \sqrt{2400/11}
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Gennadij [26K]

Multiplication is helps to add a number multiple times. The meaning of  6 x 5 is 6 + 6 + 6 + 6 + 6.

<h3>What is multiplication?</h3>

Multiplication tells us the number of times a number is been added to itself. For example, 3 x 2 = 3 + 3 = 2 + 2 + 2

Given to us

5 x 6

As we have already discussed that multiplication is the number of times a number is been added to itself. therefore,

5 x 6 = 5 + 5 + 5 + 5 + 5 + 5 = 6 + 6 + 6 + 6 + 6

Hence, the meaning of  6 x 5 is 6 + 6 + 6 + 6 + 6.

Learn more about Multiplication:

brainly.com/question/19943359

5 0
2 years ago
4. Nine fruit juice bottles contain 4 1/2 litres of fruit juice between them.
brilliants [131]

Answer:

2\frac{1}{2} litres or 2.5 litres

Step-by-step explanation:

From the question, 9 fruit juice bottles contain 4\frac{1}{2} litres of fruit juice. Therefore, to find how many litres of fruit juice would be contained in 5 fruit juice bottles, you multiply 5 by 4\frac{1}{2} litres and you divide the product by 9.

i.e. Let the quantity of the fruit juice for 5 bottles be x.

9 juice bottles ===> 4\frac{1}{2} litres

5 juice bottles ===> x

∴x = \frac{5 * 4\frac{1}{2} }{9} litres

x = \frac{5 * 4.5}{9} litres

x = \frac{22.5}{9} litres

x = 2.5 litres or 2\frac{1}{2} litres

Hope this helps!!!

3 0
2 years ago
Find the radius of a sphere with a volume of 4.5 pi cubic centimeters
Norma-Jean [14]

Answer:

1.02

Step-by-step explanation:


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3 years ago
In 2005, Lee began working as a nurse anesthetist with a taxable income of $119,000. The Medicare tax was 1.45% and the Social S
maks197457 [2]

Answer:

$7,305.50

Step-by-step explanation:

The computation of the FICA tax pay in 2005 is shown below:

Medicare = 1.45% × $119,000 = $1,722.50

And, Social security tax = 6.2% × 90,000  = $5,580

So, the FICA tax in 2005 is

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= $7,305.50

7 0
2 years ago
Please help I dont understand​
Kitty [74]

Answer:

3rd option

Step-by-step explanation:

A direct variation is expressed in this form:

y = kx

1. y - 4x = 8

y = 4x + 8 is not a direct variation

2. y + 2 = 7x

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4. y = 5x - 2

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2 years ago
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