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2 years ago

12

A box contains 144 marbles, which are either red or blue. if there are 3 times as many red marbles as there are blue marbles in

the box, how many red marbles are in the box

1 answer:

kicyunya [14]2 years ago

3 0

Given:
X: The blue marbles.
3X: The red marbles.
A box contains 144 marbles.
SOLVING:
X + 3X = 144
4X = 144
X = $\frac{144}{4}$
X = 36 ===> The blue marbles.

If there are 3 times as many red marbles as there are blue marbles:
3(36) = 108 ===> The red marbles. SOLUTION

TESTING:
$36+108=144$
$\boxed{144}=\boxed{144}\quad\checkmark\ The\ value\ is\ correct.$
GOOD LUCK...!!!

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2 years ago

A random sample of 100 people was taken. Eighty of the people in the sample favored Candidate A. We are interested in determinin

riadik2000 [5.3K]

Answer:

Option b - not significantly greater than 75%.

Step-by-step explanation:

A random sample of 100 people was taken i.e. n=100

Eighty of the people in the sample favored Candidate i.e. x=80

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$p=\frac{x}{n}$

$p=\frac{80}{100}$

$p=0.8$

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Alternative hypothesis $H_1$ : candidate A is not significantly greater than 75%.

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Applying test statistic Z -proportion,

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3 years ago

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Aleks [24]

<h2>Hello!</h2>

The answer is:

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<h2>Why?</h2>

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From the statement we know that:

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We have that:

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Have a nice day!

6 0

2 years ago