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2 years ago

Please helpp and show your work pleasee

Mathematics

1 answer:

spin [16.1K]2 years ago

3 0

Answer:

$b=27$

Step-by-step explanation:

$\frac{b}{3} -7=2\\\\\frac{b}{3}=9\\\\b=27$

Invisible Steps:

Add 7 on each side of the equation:

$\frac{b}{3}-7+7=\frac{b}{3}\\2+7=9$

Multiple 3 on each side of the equation:

$\frac{b}{3}$ · $3=b$

$9$ · $3=27$

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Which greater 9.28 or 9.3

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3 years ago

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Answer:

George can feed 6 people.

Step-by-step explanation:

Given:

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3 years ago

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

Solve the equation for z 5z-8=32 A. z=4 B. z=4.8 C. z=6 D. z=8

nadezda [96]

Answer:

Z=8 is the answer

Step-by-step explanation:

first, you add 8 to both sides which leaves you with 5z=40. then after that you divide both sides by 5 which leaves you with 5/5z = 40/5. then buy dividing 5 by 5 its leaves you with 1 which is equal to z because blank variables equal 1. On the other side if the equation 40 by 5 is 8 so that leaves you with z=8

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3 years ago

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Alexxandr [17]

Answer:

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3 years ago

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