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3 years ago

PLEASE HELP write a word problem that can be solved by the equation 108 divided by r=12

2 answers:

8 0

There are r classes in a school and there are a total of 108 persons in the school. If there are equal number of students in each class and there are 12 classes in the school. Find the number of students in each class.

108 ÷ r

r = 12

108 ÷ 12 = 9

9 students in each class.

IRINA_888 [86]3 years ago

5 0

You have to sent a message on the post office.
the message must have 108 characters in total. you have to use 12 words in that message. what is the maximum length (the number of characters in each) of the words you have to use it to use only 12 words, and use 108 characters in total?

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Please help mee pleaseee

nalin [4]

Answer:

The exact answer in terms of radicals is $x = 5*\sqrt[3]{25}$

The approximate answer is $x \approx 14.62009$ (accurate to 5 decimal places)

===============================================

Work Shown:

Let $y = \sqrt[5]{x^3}$

So the equation reduces to -7 = 8-3y

Let's solve for y

-7 = 8-3y

8-3y = -7

-3y = -7-8 ... subtract 8 from both sides

-3y = -15

y = -15/(-3) ... divide both sides by -3

y = 5

-----------

Since $y = \sqrt[5]{x^3}$ and y = 5, this means we can equate the two expressions and solve for x

$y = 5$

$\sqrt[5]{x^3} = 5$

$x^3 = 5^5$ Raise both sides to the 5th power

$x^3 = 3125$

$x = \sqrt[3]{3125}$ Apply cube root to both sides

$x = \sqrt[3]{125*25}$

$x = \sqrt[3]{125}*\sqrt[3]{25}$

$x = \sqrt[3]{5^3}*\sqrt[3]{25}$

$x = 5*\sqrt[3]{25}$

$x \approx 14.62009$

4 0

3 years ago

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A triangle has one angle that measures 72 degrees and one angle that measures 18 degrees what kind of triangle is it

MariettaO [177]

Answer:

a rightangle triangle

Step-by-step explanation:

because 72+18=90 degrees

when a side is 90 degrees in a triangle, it is right-angled.

hope this helps you!!

7 0

3 years ago

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Firlakuza [10]

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Ugo [173]

Answer:

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Step-by-step explanation:

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4 years ago

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Mazyrski [523]

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7 0

3 years ago

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