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Arisa [49]
2 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?
Mathematics
1 answer:
melomori [17]2 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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A total of 50 juniors and seniors were given a mathematics test. The 35 juniors attained an average score of 80 while the 15 sen
Alik [6]

Answer:

77

Step-by-step explanation:

Firstly, we need to calculate the total score of the junior students and the total score of the senior students.

The total score of the junior students is 35 * 80 = 2,800

The total score of the senior students is 15 * 70 = 1050

The total score is thus 2,800 + 1,050 = 3,850

The average score of the 50 students is thus 3,850/50 which equals 77

8 0
3 years ago
Write out the equation that would go with a graph
KIM [24]

Answer:

y = (1/2)x + 0

Step-by-step explanation:

The equation would be y = mx + b

m is the slope and b is the y-intercept

6 0
3 years ago
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Given that f(x)=2x+2 evaluate f(1)+f(5)
Svetlanka [38]

Answer:

16

Step-by-step explanation:

To solve this, you need to evaluate the function at f(1), which just means that you have to plug in 1 for any x you see in the equation. For example, here f(1) = 2(1) + 2 which simplifies to 4. Next find f(5). By doing the same process you will find that this is 12. The problem asks for f(1) + f(5) so by putting those values in you will get 4+12=16. Hope this helps! :)

8 0
2 years ago
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Here is the final problem jaded
lana [24]

Answer:

x = 12.99

Step-by-step explanation:

Tan(33) = \frac{x}{20}

Tan(33) * 20 = x

12.99 = x

Hope this helps!

7 0
3 years ago
Can someone please help me with this question?<br><br> n/7 +2 = 2<br><br> Explain :)
Vinvika [58]

Answer:

N/A

Step-by-step explanation:

The n has be divisable by to where that number plus 2 equals 2.

7 0
2 years ago
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