3 years ago

17.2 Multiplied by 12.86

Mathematics

1 answer:

amm18123 years ago

6 0

17.2 multiplied by 12.86 is 221.192.

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For Sophia’s graduation party, several tables of the same width will be arranged end to end to form a serving table with a total

Andrew [12]

Answer:

The length is 16.1 ft and the width is 4.7 ft

Step-by-step explanation:

Let

x -----> the total length of the tables

y -----> the width of the tables

we know that

The area is equal to

$A=xy$

$A=75\ ft^{2}$

$75=xy$ -----> equation A

$x=3y+2$ -----> equation B

substitute equation B in equation A

$75=(3y+2)y$

$3y^{2} +2y-75=0$

Solve the quadratic equation by graphing

The solution is $y=4.7\ ft$

Find the value of x

$x=3(4.7)+2=16.1\ ft$

therefore

The length is 16.1 ft and the width is 4.7 ft

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3 years ago

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How Do I solve this system of equations?<br><br> 5x+4y=-14<br> 3x+6y=6

Makovka662 [10]

3x = -6y + 6 becomes x = -2y + 2 and then you substitute in 5( -2y + 2) + 4y = -14

-10y + 10 + 4y = -14
-6y = -24
6y = 24
y = 4

And then you put y in x = -2(4) + 2 to find x
X = -8 + 2 = -6
x = -6

Then you try in both
5(-6) + 4(4) = - 14 -> -30 + 16 is -14 ✔️
3(-6) + 6(4) = 6 -> -18 + 24 is 6 ✔️

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4 years ago

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the first definition of an element was made by

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