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3 years ago

12

The cost to install a certain kind of floor tile is $20 per square foot. The total cost to install in an x-foot-by-x-foot room i

s f(x)=20x^2.
What is a reasonable domain?
How much for an 8-foot-by-8-foot?

1 answer:

melomori [17]3 years ago

3 0

Answer:

x > 0; $1280

Step-by-step explanation:

Domain should be x > 0 because length is not negative

When x = 8

Cost = 20(8²) = 1280

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3 years ago

A baby weighed 7.25 at birth. at the end of 8 month,the baby weighed 2 1/2 times its birth weight. how many pounds did the baby

Artyom0805 [142]

2 1/2 is in mixed fraction. So let's first make it into improper fraction.

(2*2 + 1) / 2 = 5/2

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in short, 18.125 is the answer

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3 years ago

What is the lowest value of the range of the function

Rasek [7]

The question is incomplete. Below you will find the missing graph.

The lowest value of the range of the function shown on graph is (B) -2.

Graph is the pictorial representation of the function or mathematical relation.

The lowest value of the graph is the value of y when $y=f(x)$ gives the least value.

From the given graph we can clearly see that at $x=3$ the graph of the given function approaches the least value which is -2.

So the lowest value of the range of the function shown on the graph is -2.

Hence the correct option is (B).

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2 years ago

A and B are complementary angles if angle a equals (X +24) and angle B equals (X +16) then what is the measurement of b

Hatshy [7]

If A and B are complementary angles, then they add up to 90 degrees.

So A + B = 90 => (x + 24) + (x + 16) = 90 => 2x + 40 = 90 => 2x = 50.

So x = 25, and thus, the measurement of B is (25 + 16) = 41.

The measurement of angle A is (25 + 24) = 49, and indeed they are complementary.

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3 years ago

If the lines a and b in the diagram below are parallelm why do angles 2 and 6 measure 60 degree angles

Bas_tet [7]

Angles 2 and 6 are corresponding angles, which would explain why they are congruent if lines a and b are parallel, but there is nothing in the problem to explain that any of the angles equals 60 degrees since no measurements were given in the diagram.

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3 years ago