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3 years ago

Which of the following is not an inequality?

Mathematics

2 answers:

emmainna [20.7K]3 years ago

8 0

<h3>Answer: 18x + 9y (choice C)</h3>

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Explanation:

An inequality must have one of the four symbols

$\le$

$\ge$

which are "less than", "greater than", "less than or equal to", and "greater than or equal to" in that exact order. Choices A, B and D have one of these symbols which makes them inequalities. We can cross them off the list. Choice C does not have any of the four symbols mentioned, so it's not an inequality. Instead, choice C is a mathematical expression, or we can say "expression" for shorthand.

kap26 [50]3 years ago

5 0

Answer

C is the correct option

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yulyashka [42]

ANSWER

11% of college costs were spent on books

EXPLANATION

if you multiply 11% (.11) to 2900 you would get your answer ($319)

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3 years ago

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2 years ago

A circular mirror has a diameter of 12 inches.what is the area, in square inches, of the mirror.

navik [9.2K]

Answer: The area of the mirror is 113.14 sq. inches [approx.].

Step-by-step explanation: Given that a circular can till 375 ft² of land in 15 min.

We are to find the area of the mirror in square inches.

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$A=\pi r^2.$

The diameter of the circular mirror is 12 inches, so the radius of the mirror will be

$r=\dfrac{12}{2}=6~\textup{inches}.$

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3 years ago

Read 2 more answers

Two solid cylinder with radii 5cm and 10cm and length 7cm and 5cm respectively are melted and recast into a cylindrical disc of

Jobisdone [24]

Answer:

15 centimeters.

Step-by-step explanation:

We must calculate the volume of each cylinder and add it, like this:

v = pi * (r ^ 2) * l

replacing:

v1 = 3.14 * (5 ^ 2) * 7

v1 = 549.5

v2 = 3.14 * (10 ^ 2) * 5

v2 = 1570

The sum would be:

549.5 + 1570 = 2119.5

That would be the volume of the cylindrical disk, this case would be the same formula only that it would not be length but thickness, like this:

v = pi * (r ^ 2) * t

we want to know r, therefore:

r ^ 2 = v / pi * t

replacing:

r ^ 2 = 2119.5 / (3.14 * 3)

r ^ 2 = 225

r = 15

which means that the radius would be 15 centimeters.

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