3 years ago

I Need Help!!! PLEASE HELP!!!!!!!!

Mathematics

1 answer:

WINSTONCH [101]3 years ago

8 0

Answer:

Maybe B?

Step-by-step explanation:

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How to find all real solutions

AlladinOne [14]

$\bf \sqrt{\sqrt{x-5}+x}=5\leftarrow \textit{squaring both sides}
\\\\
\sqrt{x-5}+x=25\implies \sqrt{x-5}=25-x\leftarrow \textit{squaring both sides}
\\\\
x-5=(25-x)^2\implies x-5=625-50x+x^2
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0=x^2-51x+630\implies 0=(x-30)(x-21)$

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Convert 72°F to °C (to the nearest tenth) using one of the following formulas: F = 9/5xC + 32 or C = (F - 32) x 5/9.

Fudgin [204]

First set up the equation:
$C=(F-32)\times\frac{5}{9}$
Then substitute in known values:
$C=(72-32)\times\frac{5}{9}$
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3 years ago

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Which equation represents this number sentence?<br> Two more than one-third of a number is 8

Alja [10]

Answer:

Step-by-step explanation:

One - third = 1/3

then:

one third of a number = a*1/3 = a/3

Then the equation that represents this sentence is:

2 + a/3 = 8

process:

a/3 = 8 - 2

a/3 = 6

a = 6*3

a = 18

Check:

2 + 18/3 = 8

2 + 6 = 8

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2 years ago