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SVEN [57.7K]
3 years ago
12

A rectangle's one side is 7 inches shorter than four times it's other side. The perimeter is 180 inches. What are the sides? Ple

ase explain with steps and if your can tell me why I keep getting 19.4.
Mathematics
1 answer:
Yanka [14]3 years ago
6 0

Answer:

Step-by-step explanation:

we call one side x and the other side 4x-7. Because in a rectangle opposite sides are equal we can now set up an equation.

x + x + 4x-7 +4x-7 = 180

              10x - 14 = 180

                   10x = 194

                    x = 19.4

the lenght of the other side is 4(19.4)-7 = 70.6

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4 years ago
If x+y=12 and xy=27 . find x^3+y^3<br>pls help with steps ​
Ivan

Answer:

Step-by-step explanation:

use formula

x^3+y^3=(x+y)^3-3*x*y(x+y)

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Given the Arithmetic series A1+A2+A3+A4
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Answer:

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Step-by-step explanation:

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now,

a _{n} = a + (n - 1) \times d \\ 67 = 13 + (n - 1) \times 3 \\ 67 = 13 + 3n - 3 \\ 67 - 13  + 3 = 3n \\ 57 = 3n \\ 3n = 57 \\  \\ n =  \frac{57}{3}  \\  \\ n = 19

now the sum of the numbers

S _{n} =  \frac{n}{2} (a + l) \\  \\ S _{19}  =  \frac{19}{2}   (13 + 67) \\  \\ S _{19}  =  \frac{19}{2} (80) \\  \\ S _{19}  =  \frac{19}{2}  \times 80 \\  \\ S _{19}  = 19 \times 40 \\ S _{19}  = 760

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valentinak56 [21]

Answer:

Team blue points = 4 points

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Step-by-step explanation:

Let

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Equate equation (1) and (2)

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= 16 points

4 0
3 years ago
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