» What is the value of s? S

Mathematics

2 answers:

bekas [8.4K]3 years ago

6 0

Answer:

s = 6

Step-by-step explanation:

soldier1979 [14.2K]3 years ago

4 0

Answer:

$\huge \boxed{s=6}$

$\boxed {\frak{Step \: by \: step \: explanation:}}$

$Given,3(s+4)=30$

$3s + 12 = 30$

$\boxed{Subtract 12 from \: both \: sides \: of \: the \: equation}$

$3s + 12 - 12 = 30 - 12$

$3s = 18$

$\boxed{Divide \: both \: sides \: of \: the \: equation \: by \: the \: same \: term}$

$\large{ \frac{3s}{3} = \frac{18}{3} }$

$\boxed{s = 6}$

$\frak{EtherealMistress}$

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An office room is 12 ft by 10 ft with a door that is 30 inches wide. How many feet of baseboard are needed to go around the room

Lina20 [59]

Draw a diagram to illustrate the problem as shown below.
The length of baseboard needed is AB + BC + CD + DE + FE.
Note that 30 in = 30/12 ft = 2.5 ft.

Because of the door opening,
AB + EF = 12 - 2.5 = 9.5 ft
Also,
BC = DE = 10 ft
CD = 12 ft.

The amount of baseboard needed is
AB + BC + CD + DE + FE
= (AB + EF) + BC + CD + DE
= 9.5 + 10 + 12 + 10
= 41.5 ft

Answer:
41.5 feet of baseboard.