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3 years ago

The area of a rectangle is 72 square units. If its width is 4 units, find the length.

Mathematics

1 answer:

ludmilkaskok [199]3 years ago

8 0

The area is 288 units squared, or D. 72 times 4 equals 288.

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A poll showed that 57.4% of Americans say they believe that statistics teachers know the true meaning of life. What is the proba

agasfer [191]

Answer:

The probability of randomly selecting someone who does not believe that statistics teachers know the true meaning of life is 0.426.

Step-by-step explanation:

Let X = number of Americans who believe that statistics teachers know the true meaning of life.

The probability of the random variable X is,

P (X) = 0.574

The event of a person not believing that statistics teachers know the true meaning of life is the complement of the event X.

The probability of the complement of an event, E is the probability of that event not happening.

$P(E^{c})=1-P(E)$

Compute the value of $P(X^{c})$ as follows:

$P(X^{c})=1-P(X)\\=1-0.574\\=0.426$

Thus, the probability of randomly selecting someone who does not believe that statistics teachers know the true meaning of life is 0.426.

4 0

3 years ago

Read 2 more answers

Find the area of this regular polygon. Round to the nearest tenth. 8.8 ft

Akimi4 [234]

Answer:

I don't really know but I'm pretty sure u can fix it and answer this question

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3 years ago

Plz help i rlly need help . due today

puteri [66]

U divide 4/7 by 3/4 which is 16/21

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3 years ago

An octagonal pyramid ... how many faces does it have, how many vertices and how many edges? A triangular prism ... how many face

nadezda [96]

1: 8 faces and 9 with the base 9 vertices and 16 edges

2: 3 faces and 5 with the bases 6 vertices and 9 edges

3: 3 faces and 4 with the base 4 vertices and 6 edges

Hope this can help you.

4 0

4 years ago

1 + 5sin^2x= 7sin^2x solve trig equation. Can you show me how to solve this trig equation?

pantera1 [17]

Answer: $x = \frac{\pi}{4}\pm k\frac{\pi}{2}\,\,\,\,\,\,k=\{0,1,2,...\}$

Step by step:

$1 + 5\sin^2x= 7\sin^2x\\\sin^2 x\rightarrow z\\1 + 5z = 7z\\2z = 1\\z = \frac{1}{2}\implies \sin^2 x = \frac{1}{2}\\|\sin x| = \frac{1}{\sqrt{2}}\\\sin x = \pm\frac{1}{\sqrt{2}}=\pm\frac{\sqrt{2}}{2}\\\implies x = \frac{\pi}{4}\pm k\frac{\pi}{2}\,\,\,\,\,\,k=\{0,1,2,...\}$

(Used a table of common angles)

8 0

4 years ago