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lesya [120]
2 years ago
14

Help me plzzzzzzzzzzzz these are my last points

Mathematics
2 answers:
oksian1 [2.3K]2 years ago
7 0

Answer:

290?

Step-by-step explanation:

defon2 years ago
4 0

Answer:

290

Step-by-step explanation:

This may not be right but I used the equation f(x) = 3(10)^{2} - 10.

f(x) = 3(10)^2 - 10\\\\f(x) = 3(100) - 10 \\\\f(x) = 300 - 10\\\\f(x) = 290

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Answer:

10th term means  n = 10

we have general term = n² -8

substituting the value of n we get

10² - 8 = 100-8 =92

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Cynthia Besch wants to buy a rug for a room that is 1919 ft wide and 2727 ft long. She wants to leave a uniform strip of floor a
yulyashka [42]

Answer:

The dimension of the rug would be 17 ft × 9 ft.

Step-by-step explanation:

Given

length of the room = 27 ft.

width of the room = 19 ft.

suppose, she leaves a uniform strip of x ft. around the rug.

So,

The length of rug = (27-2x)ft.

Width of rug= (19-2x)ft.

∴ Area of the rug= length×width

                            =  (27-2x)(19-2x)

                            =  513-54x-38x+4x^2

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According to the question,

513-92x+4x^2=153

513-92x+4x^2-153=0        ( subtract 153 both sides)

4x^2-92x+360=0

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x^2-23x+90=0

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x^2-18x-5x+90=0

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(x-5)(x-18)=0

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x=5 or x=18

if x=18, dimension would be negative  ( Not possible)

Thus, x= 5

Hence,

length of rug= 27-10=17 ft.

width of rug= 19-10=9 ft.

8 0
3 years ago
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