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1 year ago

HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

Anni [7]1 year ago

6 0

Answer:

l = 14

Step-by-step explanation:

The perimeter of a rectangle is

P =2(l+w)

The width is x-6

w = x-6

The length is 8 units longer than the width

l = w+8

l = x-6+8

l = x+2

We can substitute this into the equation for Perimeter, which is given as 40

40 = 2(x+2 + x-6)

Combine like terms

40 =2 (2x-4)

Divide by 2

40/2 = 2/2 (2x-4)

20 = 2x-4

Add 4 to each side

20+4 =2x-4+4

24 = 2x

Divide by 2

24/2 =2x/2

12=x

We want to know the length

l = x+2

l =12+2

l = 14

Step-by-step explanation:

Dennis_Churaev [7]1 year ago

3 0

Answer:

Step-by-step explanation:

Multiply the length that you have been given by 2

2: Then, subtract the result from the perimeter.

3: You now have the total length for the remaining 2 sides.

4: Width or height is the number divided by 2.

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A 2x + 5 3x - 2 B+ X = [? ]

WITCHER [35]

Answer: 7

Step-by-step explanation:

They are alternate interior angle

2x + 5 = 3x -2

2x = 3x -7

-x = -7

x = 7

4 0

2 years ago

Can someone please help?!!!

Nuetrik [128]

The perimeter of a rectangle is P=2l+2w where l is the length and w is the width.

Plug in values of l and w in:

P=2(x+8)+2(x-1)

P=2x+16+2x-2

P=4x+14

So the perimeter of the rectangle is 4x+14 units

Hope this helped!

3 0

2 years ago

I NEED REAL HELP IF NOT REAL GET BANNED

kari74 [83]

Answer:

Every minute, the hour hand moves 1/2 of a degree, and the minute hand moves 6 degrees. So in 48 minutes, the hour hand moves 24 degrees and the minute hand moves 288 degrees. 288-180-24=84. So, 84 degrees.

6 0

2 years ago

Which BEST describes the difference between the medians of boys and girls as a multiple of the interquartile range for the boys.

rusak2 [61]

Answer:

B) 7\8

Step-by-step explanation:

Boy interquartile range = 4

Difference between medians = 3.5

therefore,

3.5 \4 = 7\8

5 0

2 years ago

URGENT WILL GET 20 and Brainlest

My name is Ann [436]

The polynomial that represents the difference between the cost of distributing by train and the cost of distributing by truck is:

$f(x) = -0.04x^2 + 18x + 75$

Solution:

The cost of distributing by train can be modeled as:

$-0.07x^2 + 40x - 105$

The cost of distributing by truck can be modeled as:

$-0.03x^2 + 22x - 180$

where x is the number of tons of product distributed

To find: Difference between the cost of distributing by train and the cost of distributing by truck

Difference = cost of distributing by train - cost of distributing by truck

Let f(x) = difference in cost between trains & trucks

$f(x) = (-0.07x^2+40x-105) - (-0.03x^2 +22x - 180)$

$f(x) = -0.07x^2 + 40x -105 + 0.03x^2 -22x + 180$

$Combine\ the\ like\ terms\\\\f(x) = -0.07x^2 +0.03x^2 + 40x - 22x +180-105\\\\Add\ the\ like\ terms\\\\f(x) = -0.04x^2 + 18x + 75$

Thus polynomial that represents the difference between the cost of distributing by train and the cost of distributing by truck is found

8 0

2 years ago