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3 years ago

So lost. sum one pls help

Mathematics

1 answer:

Brums [2.3K]3 years ago

7 0

Answer: 3x-y=10 , 6x-2y=5. 3x−y=10 3 x - y = 10 , 6x−2y=5 6 x - 2 y = 5. Solve for y y in the first equation. Tap for more steps... Subtract 3x 3 x from

Graph y=6x-10 |

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Is -55.505 a rational number?

earnstyle [38]

Answer:

yes

Step-by-step explanation:

Any number that can be written in p/q from is a rational number

4 0

3 years ago

Find the average rate of change, in simplest form,<br> of the function over the interval 3 ≤ x ≤ 5

gavmur [86]

The answer to your question that you’re trying to figure out is [3,5]

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2 years ago

Factor x2 + 29x - 30.

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3 years ago

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2/3 (x-7) = -2 please please help!!

Maslowich

Answer:

x = 4.

Step-by-step explanation:

Distribute, isolate and solve.

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3 years ago

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

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

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

$= 513-92x+4x^2$

According to the question,

$513-92x+4x^2=153$

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

$4x^2-92x+360=0$

$4(x^2-23x+90)=0$

$x^2-23x+90=0$

$x^2-(18+5)x+90=0$ ( Middle term splitting)

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

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

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

$x-5=0$ or $x-18=0$ ( zero product property)

$x=5$ 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