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jok3333 [9.3K]
3 years ago
14

A rectangle has a width of 10 centimeters. The rectangle's length is 4 times its width. What is the perimeter of the rectangle?

Mathematics
2 answers:
iogann1982 [59]3 years ago
8 0
If it's width is 10cm then it's legth has to be 40cm. So 10+10+40+40=100cm Perimeter 
gregori [183]3 years ago
8 0

Answer:

100 cm.

Step-by-step explanation:

We have been given that a rectangle has a width of 10 centimeters. The rectangle's length is 4 times its width.

The length of rectangle would be 4\times 10\text{ cm}=40\text{ cm}.

We know that perimeter of rectangle is 2 times the sum of length and width of rectangle.

\text{Perimeter of rectangle}=2(\text{Length+Width)}

\text{Perimeter of rectangle}=2(\text{10 cm+ 40 cm)}

\text{Perimeter of rectangle}=2(\text{50 cm)}

\text{Perimeter of rectangle}=100\text{ cm}

Therefore, the perimeter of our given rectangle would be 100 cm.

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R - 9S = 2 3R - 3S = -10
GrogVix [38]
R-9s=2  add 9s to both sides

r=2+9s  making 3r-3s=-10 become:

3(2+9s)-3s=-10  perform indicated multiplication on left side

6+27s-3s=-10  combine like terms on left side

6+24s=-10  subtract 6 from both sides

24s=-16  divide both sides by 24

s=-16/24

s=-2/3, making r-9s=2 become:

r-9(-2/3)=2  perform indicated multiplication on left side

r+6=2 subtract 6 from both sides

r=-4

So s= -2/3 and r= -4
8 0
3 years ago
Ted invests $8,310 in a savings account with a fixed annual interest rate of 2% compounded continuously. How long will it take f
Vsevolod [243]

Answer: It will take 8 years.

Step-by-step explanation:

Equation for interest compounded continuously:

A=Pe^{rt} , A = accumulated amount , P=Principal value , r =rate of interest , t= time.

Given: P=  $8,310 , r = 2%  , A= $9,751.88

9751.88=8310e^{0.02t}\\\\\Rightarrow\ \dfrac{9751.88}{8310}=e^{0.02t}\\\\\Rightarrow\ 1.17351143201=e^{0.02t}

Taking natural log on both sides

\ln (1.17351143201)=\ln (e^{0.02t})\\\\\Rightarrow\ 0.160000478068=0.02t\\\\\Rightarrow\ t=\dfrac{0.160000478068}{0.02}\\\\\Rightarrow\ t=8.0000239034\approx8

Hence, it will take 8 years.

8 0
3 years ago
How many mm are in cm
lyudmila [28]


There are 10 millimeters in 1 centimeter.

Hope it helps:)

4 0
4 years ago
Read 2 more answers
What is the 38th term of the arithmetic sequence of 21, 14, 7,..
kodGreya [7K]

Step-by-step explanation:

First term (a) = 21

common difference (d) = 14-21= -7

general equation for nth term = a+(n-1)d

The 38th term of the AP= 21+(38-1)(-7)

= 21+(37)(-7)

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8 0
4 years ago
What is the product?<br><br> (x − 3)(2x2 − 5x + 1)
sdas [7]

Answer:

2x^3-11x^2+16x-3

Step-by-step explanation:

Given expression,

(x - 3)(2x^2 - 5x + 1)

By distributive property,

x(2x^2-5x+1) - 3(2x^2-5x+1)

Again by distributive property,

2x^3-5x^2+x-6x^2+15x-3

Combining like terms,

2x^3-11x^2+16x-3

Which is required product.

4 0
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