Mathematics: Hevesh wants to make 2 lines of dominoes that are both 21 inches long. Each line has dominoes spaced 1 and 1/2 inches apart. How many dominoes will she need for both lines?

Let s say P = perimeter, L : Length and w : widthThenBut SoWe verify :Length = L = 38Width = w = 16...

Hevesh wants to make 2 lines of dominoes that are

Ответ:

changemyfate69

28.01.2022

Mathematics

30 dominoes in total.

Step-by-step explanation:

Each line is 21 inches long.

the space between dominoes is 1 + 1/2 inches.

(assuming that the distance includes the domino itself) Now, we need at least two dominoes to see this distance,

The we have N + 1 dominoes per line, and the distance is:

N*(1 + 1/2)inches = 21 inches

If we find N, we can find the number of domineoes in each line:

N = 21/(1 + 1/2) = 14

This means that we have 14 + 1 = 15 dominoes in each line, and we have two lines, so we have 30 dominoes in total.

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Ответ:

WorkingButNotReally

24.05.2021

Mathematics

Let's say

P = perimeter, L : Length and w : width

Then

P=2(L+w)=2L+2w=108

But

So

$2L+2w=108\\2(6+2w)+2w=108\\12+4w+2w=108\\12+6w=108\\6w=108-12\\6w=96\\w=16$

$L=6+2w\\L=6+2(16)\\L=6+32\\L=38$

We verify :

$2L+2w=108\\2(38)+2(16)=108\\76+32=108\\108=108$

Length = L = 38
Width = w = 16

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Hevesh wants to make 2 lines of dominoes that are both 21 inches long. Each line has dominoes spaced 1 and 1/2 inches apart. How many dominoes will she need for both lines?

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