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Svetach [21]
3 years ago
9

The length of a rectangle is 4cm longer than the width. If the perimeter is the rectangle is 20 centimeters, what is the area of

the rectangle
Mathematics
1 answer:
stira [4]3 years ago
4 0

Answer:

Denote:

The length of rectangular: x

The width of rectangular: y

Then,

2(x + y) = 20

x - y = 4

=> 2(y + 4 + y) =20

=> 4y = 12

=> y = 3

=> x = 3 + 4 = 7

=> Area of rectangular:

A = Length x Width = 7 x 3 = 21 (cm2)

Hope this helps!

:)

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Answer: 0.33 meters


Step-by-step explanation: in order to get from centimeters to meters you have to divide the length value by 100.


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Sunny_sXe [5.5K]

Answer:

x = -2 to x = 1

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

<u>Function modeling</u>

Real-life situations often require the help of mathematics to model numerically what happens when the variables involved can change. It could even be used to predict some expected outcomes from those models.

The problem states Janice receives $.40 per pound when he recycles less or equal than 99 pounds of aluminum. If x is the number of recycled pounds, then the amount of money he receives is

M=0.4x

We also know that if he recycles more than 100 pounds of aluminum, the pay increases to $0.5 per pound. In that case, the amount of money is

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This is a case where the function is defined differently depending on the conditions of the input variable x. It's called a piecewise function. The function can be written as

M=\left\{\begin{matrix}0.4x &x\leq99 \\ 0.5x &x>100 \\ \end{matrix}\right.

Note the function is not well constructed because there is a gap for x=100 where M is not defined. If we establish that for 100 pounds the payment is $0.5, then the second piece would include x=100

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It’s 2x the size I believe :)
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2 years ago
in a triangle TRY measure angle R is 3 times measure angle T and measure angle Y is 15 more than measure angle T find the measur
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Answer:

Angle R is 99 degree

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Let angle T be x

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Therefore, angle T is 33 degrees, angle Y=15+33=48 degrees and angle R=33*3=99 degrees

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