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3 years ago

Simplify the radical 84

Mathematics

2 answers:

aalyn [17]3 years ago

8 0

Answer:

2 $\sqrt{21}$

Step-by-step explanation:

Using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ ⇔ $\sqrt{ab}$

$\sqrt{84}$ = $\sqrt{4(21)}$ = $\sqrt{4}$ × $\sqrt{21}$ = 2 $\sqrt{21}$

shutvik [7]3 years ago

4 0

Answer:

The answer is 2√21

Step-by-step explanation:

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Why is water not used as a solvent in paper chromatography

Anastaziya [24]

Answer:

Because the kind of compounfds that you try to determine using paper chromatography (organic compounds) are usually not soluble in water. Furthermore, water could react chemically with some of this compounds, because it's a very reactive molecule. You need organic solvents that are mostly inert.

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3 years ago

163,160,157,... find the 42nd term

UNO [17]

Answer:

It's 40

Step-by-step explanation:

Arithmetic Sequence.

Common Difference:

160−163=−3

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d=−3

Explicit Formula:

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3 years ago

What is x if (4x+5)+(x^2+10)=180

stich3 [128]

Answer:

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Step-by-step explanation:

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3 years ago

What is the coefficient in this expression? 5 minus 4.7 minus 2 x + StartFraction 5 over 8 EndFraction

Anarel [89]

Answer:

2 is the coefficient

Step-by-step explanation:

2 is the coefficient bc a coefficient is the number next to a variable (such as x) and 2 is next to x and is the only one in the equation

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3 years ago

Read 2 more answers

Mary rolled three 1-6 cubes at the same time . She rolled 5,1 and 6 . Which list shows all the possible three-digit numbers she

Aleksandr [31]

Answer:

list no shows by three cube={1,1,1}

Step-by-step explanation:

three cubes rolled at same time

it gives these value {1,1,1},{1,,1,2},{1,1,3},{1,1,4},{1,1,5},{1,1,6},{1,2,1},{1,3,1},{1,4,1},{1,5,1},{1,6,1},{2,1,1},{3,1,1},{4,1,1},{5,1,1},{6,1,1}

list no shows by three cube={1,1,1} answer

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3 years ago