2 years ago

What is 5 3/20 as a decimal?

Mathematics

1 answer:

Marrrta [24]2 years ago

6 0

5 3/20 = 5.15 <=====

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I’m confused on this answer anyone know it?

slamgirl [31]

Answer:

$y=\frac{26}{7},\:x=-\frac{15}{7}$

Step-by-step explanation:

$\begin{bmatrix}4x+5y=10\\ -2x+y=8\end{bmatrix}\\\\\begin{bmatrix}-2\cdot \frac{10-5y}{4}+y=8\end{bmatrix}\\\\$

$-5+\frac{7y}{2}=8\\\\\mathrm{Multiply\:both\:sides\:by\:}2\\-5\cdot \:2+\frac{7y}{2}\cdot \:2=8\cdot \:2\\-10+7y=16\\y=\frac{26}{7}\\$

$\mathrm{For\:}x=\frac{10-5y}{4}\\\mathrm{Subsititute\:}y=\frac{26}{7}\\x=\frac{10-5\cdot \frac{26}{7}}{4}\\\\$

$x=-\frac{15}{7}\\$

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2 years ago

I need help with both of em

bazaltina [42]

The answer to the first one is C) 16. The second one is A) 3,072

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50 1/2 divided by 1/4 = 202<br> How are the numbers related?

Stels [109]

Answer:

see the explanation

Step-by-step explanation:

Let

$x=50\frac{1}{2}=\frac{50*2+1}{2}=\frac{101}{2}$

$y=\frac{1}{4}$

Find the ratio x/y

$\frac{x}{y}=\frac{(101/2)}{(1/4)} =\frac{101*4}{2*1}=202$

therefore

$\frac{x}{y}=202$

$x=202y$

That means----> The first number (50 1/2) is 202 times greater than the second number (1/4)

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2 years ago

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Square root of -3<br><br> find the square root of -3

LenaWriter [7]

Answer:

finding the square root of a negative number is not possible

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If Carbon Monoxide had a concentration in the air of 0.000518% how many particles out of 331,002,651 would be Carbon Monoxide?

Alex17521 [72]

Answer:

171,459 particles of CO

Step-by-step explanation:

331,002,651×0.000518 = 171459

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2 years ago