3 years ago

CAN SOMEONE PLEASE EXPLAIN THIS, I DONT NEED THE ANSWER ONLY EXPLANATION!!!!! HELP FASTTTTT THE ANSWER IS HEAT WAS ADDED

Mathematics

2 answers:

Sav [38]3 years ago

4 0

Answer:

Step-by-step explanation:

The thermometer’s temp could have made the liquid to chemically react?

sergij07 [2.7K]3 years ago

3 0

Answer:

Step-by-step explanation:

The substance in the second beaker must have lost heat for it to solidify

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Please help me to solve the question. (chapter angle between two lines)

dsp73

Answer: $\bold{x^2-\dfrac{181}{13}xy+12y^2=0}$

<u>Step-by-step explanation:</u>

$\tan \theta =\dfrac{y}{x}\quad \longrightarrow \theta=\tan ^{-1}\bigg(\dfrac{y}{x}\bigg)$

$\text{Given:}\quad \theta =\tan^{-1}\bigg(\dfrac{1}{13}\bigg)\quad \longrightarrow x=13,y=1$

Insert x = 13 and y = 1:

x² + 2hxy + 12y² = 0

(13)² + 2(13)(1) + 12(1)² = 0

169 + 26h + 12 = 0

26h + 181 = 0

26h = -181

$h=-\dfrac{181}{26}$

$\text{Insert:}\ h=-\dfrac{181}{26}$

$x^2 + 2\bigg(-\dfrac{181}{26}\bigg) xy + 12y^2 = 0$

$\bold{x^2 -\bigg(\dfrac{181}{13}\bigg) xy + 12y^2 = 0}$

8 0

3 years ago

2) The ratio of an exterior and an interior angle of regular polygon at a vertex is 2 : 7, the number of sides of the regular po

mina [271]

Answer:

Ext=2x

Int=7x

Int+ext=180

2x+7x=180

9x=180

x=20

Ext=2×20=40

No of sides =360/40

=9 sides.

I hope this helped you

Step-by-step explanation:

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aleksklad [387]

The package weighs 8.5 ounces

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3 years ago

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nikdorinn [45]

Answer:

Step-by-step explanation:

they are alternative interior angles!

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4 years ago

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