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2 years ago

How did u get this and what is it I need help so bad

Mathematics

1 answer:

morpeh [17]2 years ago

4 0

Answer:

y=6x+5

Step-by-step explanation:

I am not sure if this is the answer but it's worth a try...

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turner's mom measured his room to see how long the wallpaper border needed to be. If two walls are 15 feet long and two walls ar

anyanavicka [17]

Answer:

54 feet

Step-by-step explanation:

The perimeter of the room is the sum of wall lengths:

2·(15 feet) + 2·(12 feet) = 30 feet + 24 feet = 54 feet

The border should be cut to 54 feet.

_____

<em>Comment on the question</em>

This seems to be a math problem designed to get you to figure the perimeter of the room. If you were actually installing wallpaper, you might want to cut the border in four (4) pieces, each slightly longer than the corresponding wall. That way any lack of squareness in the corners could be managed more easily, and the possibility of a gap at the seam could be eliminated.

4 0

3 years ago

A rectangular parcel of land has an area of 3,000 ft2. A diagonal between opposite corners is measured to be 10 ft longer than o

Kazeer [188]

Answer:

40 ft × 75 ft

Step-by-step explanation:

Let x be the one side ( in feet ) of the rectangular parcel,

So, the diagonal between opposite corners = ( x + 10 ) feet,

Let y be the other side of the rectangle ( adjacent to side x ),

The area of the rectangle,

A = x × y,

According to the question,

A = 3000 square ft,

$\implies xy = 3000\implies y=\frac{3000}{x}$

∵ In a rectangle,

$D^2=a^2+b^2$

Where, a and b are the adjacent side of the rectangle and D is the diagonal,

$(x+10)^2 = x^2 + y^2$

$(x+10)^2 = x^2 + \frac{9000000}{x^2}$

$x^2(x+10)^2 = x^4 + 9000000$

$x^2(x^2+100+20x) = x^4 + 9000000$

$x^4+100x^2 + 20x^3 = x^4 + 9000000$

$20x^3 + 100x^2 - 9000000=0$

$x^3 + 5x^2 - 450000 = 0$

By graphing the equation,

We found that,

The only real zeros of the equation is at x = 75,

Hence, the one side of the rectangle = 75 ft,

And, second side = $\frac{3000}{75}$ = 40 ft

Hence, the dimension of the land is 40 ft × 75 ft

3 0

3 years ago

Read 2 more answers

Factor -3bk 2 + 9bk - 6b

satela [25.4K]

First you do -3bk+9bk and that equals 6bk then since there are no more like terms the experssion would be simplified into 6bk+2-6b
HOPE THAT HELPED!

8 0

3 years ago

christian has a diecast metal car that is a scale model of an actual car. If the actual length of the car is 10 feet and 6 inche

Brilliant_brown [7]

So.... You would get your problem out of the numbers 10,6,7 you would multiply and get 10*6*7=420 so 420 would be the answer if that's what your looking for!!
Hope i helped if i did please make me Brainiest

5 0

3 years ago

3 A piece of ibbon of lengh 84 cm is divided

xxMikexx [17]

Add the 3 ratio portions together: 1 + 4 + 7 = 12

Divide total length by 12:

84/12 = 7

Multiply each ratio portion by 7:

1 x 7 = 7

4 x 7 = 28

7 x 7 = 49

The longest piece is 49 cm

3 0

3 years ago

Read 2 more answers

How did u get this and what is it I need help so bad​

How did u get this and what is it I need help so bad