3 years ago

Simplify the following. -(3x)2

Mathematics

1 answer:

gavmur [86]3 years ago

4 0

Answer: -6x

Step-by-step explanation:

multiply 2 by 3

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Simplify the expression-3÷(-2/5)

BARSIC [14]

Answer:

15/2 or 7.5

Step-by-step explanation:

-3÷ (-2/5)

The reciprocal of -2/5 is -5/2

So we multiply -3 into the reciprocal of the fraction and we can get the same answer

Therefore,

-3÷(-2/5)

= -3x -5/2

= (-5x-3)/2

(Two negatives become a positive)

= 15/2 in fraction form

And 7.5 in decimal form

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3 years ago

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What is the lowest fraction of 0.875cm

Ira Lisetskai [31]

7/8 would be the answer is the most simply form available

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3 years ago

PLEASE HELP ME ASAP

Crank

x^2+13x+36

Answer: (x+4)(x+9)

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4 years ago

According to Charles's law, if the pressure is held constant, the volume of a gas varies directly with the temperature measure

Ksju [112]

Answer:

V₂ = 252 cm³

Step-by-step explanation:

Charles's law = If the pressure is held constant, the volume of a gas varies directly with the temperature measured on the Kelvin scale.

Mathematically, $V=kT$

$\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}$

We have, V₁ = 192 cm³, T₁ = 112 K, T₂ = 147 cm³, V₂ = ?

Using the above relation of Charles's law :

$V_2=\dfrac{V_1T_2}{T_1}\\\\V_2=\dfrac{192\times 147}{112}\\\\V_2=252\ cm^3$

So, the new temperature is 252 cm³.

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3 years ago

How many 5 Card hands have exactly 2 aces and 3 kings?

sweet [91]

It should be 24 because <span>Pick 3 aces: 4C3 = 4 ways
Pick 2 kings: 4C2 = 6 ways
# of full-house hands: 4*6 = 24</span>

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3 years ago