2 years ago

PLEASEE HELP!!!!!!!!!1

Mathematics

1 answer:

dem82 [27]2 years ago

8 0

The answer is 2 hours and 36 minutes :)))

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Liono4ka [1.6K]

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Step-by-step explanation:

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2 years ago

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Sav [38]

The answer is D. 27
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На какой угол повернётся минутная стрелка за:30мин,15мин,10мин,1мин. Плиииииииииизззззззззззз и желательно быстрей

jolli1 [7]

30 mins = 180°
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2 years ago

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PLEASE HELP ME IM STRUGGLING!!!

Kitty [74]

Answer:

The required answer is $c=7\sqrt{3}$

Therefore the number in green box should be 7.

Step-by-step explanation:

Given:

AB = 7√2

AD = a , BD = b , DC = c , AC = d

∠B = 45°, ∠C = 30°

To Find:

c = ?

Solution:

In Right Angle Triangle ABD Sine identity we have

$\sin B = \dfrac{\textrm{side opposite to angle B}}{Hypotenuse}\\$

Substituting the values we get

$\sin 45 = \dfrac{AD}{AB}= \dfrac{a}{7\sqrt{2}}$

$\dfrac{1}{\sqrt{2}}= \dfrac{a}{7\sqrt{2}}\\\\\therefore a=7$

Now in Triangle ADC Tangent identity we have

$\tan C = \dfrac{\textrm{side opposite to angle C}}{\textrm{side adjacent to angle C}}$

Substituting the values we get

$\tan 30 = \dfrac{AD}{DC}= \dfrac{a}{c}\\\\\dfrac{1}{\sqrt{3}}=\dfrac{7}{c}\\\\\therefore c=7\sqrt{3}$

The required answer is $c=7\sqrt{3}$

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3 years ago

3^4x-5=(1/127)^2x+10

erastovalidia [21]

<span>10935/59048 thats as low as i could get it</span>

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3 years ago