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inessss [21]
3 years ago
10

A $50 computer program is on sale for 37.50 what is the percent decrease?

Mathematics
1 answer:
frutty [35]3 years ago
5 0
Decrease = 50 - 37.5 = 12.5

% Decrease = 12.5/50  * 100%    = 25%

25% decrease.
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20 how much metal is needed to smelt a cubical metal box with outer side 12 inches long if the thickness of its walls should be
guajiro [1.7K]
The volume of the metal box if the box was completely solid (V1), is:
 
 V1=(12 inches)³
 V1=1728 inches³
 
 As there are 3 inches of metal on both sides, the widht if the metal box was not completely solid, is:
 
 W=12 inches-(3 inchesx2)
 W=6 inches
 
 Then, the volumen of the no solid metal box is:
 
 V2=(6 inches)³
 V2= 216 inches³
 
 Therefore, the volume of metal needed to smelt the cubical metal box, is:
 
 V3=V1-V2
 V3=1728 inches³-216 inches³
 V3=1512 inches³
6 0
3 years ago
Plzz help everything is in the screen shot
galben [10]

Answer:

#1

  • Yes
  • y = x + 1

#2

  • Yes
  • y = -2x

#3

  • No

#4

  • No
8 0
3 years ago
NEED THIS ASAP!!!! PLZ HELP
Liono4ka [1.6K]
The second one i believe 
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8 0
3 years ago
Read 2 more answers
How many solutions does the following equation have?<br><br> x + 9 - 4x = -3x -3
Mariulka [41]
Simplify
-3x + 9 = -3x - 3
Subtract 9 (both sides)
-3x = -3x - 12
Add 3x to both sides
0 = -12, this cannot be true

Answer: no solution
4 0
3 years ago
The speed of light in a vacuum is 2.998×108 m/s .
lutik1710 [3]

To convert m/s to mi/min we have to find conversion factor first

1 mile = 1609.344 m

1m = 1/1609.344 miles

1 min = 60 s

1s = 1/60 min

Let’s put mi/min instead of m/s according to equations above

m/s = [1/1609.344 miles] / [1/60 min]

The conversion factor is

f = 60 / 1609.344

Now we can convert m/s to mi/min

V (mi/min) = 2.998 ∙ 108 m/s ∙ f = 2.998 ∙ 108 ∙ (60 / 1609.344) = 1.118 ∙ 107 mi/min

Answer: V = 1.118 ∙ 107 mi/min

Hope u have a good day of learning

8 0
3 years ago
Read 2 more answers
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