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taurus [48]
3 years ago
5

an item was selling for $72 is reduced to $60 find the precent decrease in price round your answer to the nearest tenth

Mathematics
1 answer:
natima [27]3 years ago
8 0
Remember this, 5 or higher goes up, 4 or lower the number stays the same. soooo.... lets see how i can start this off...
well,... you could....60 divided by 72 equals.... 0.8333333333333
then, starting from the decimal.. you go two spaces to the right... so thats 83.3333333333
so, since 3 is lower than 4, it would be the same.. and take off the extra three after the decimal. and we're basically... rounding off right??
so your answer should be 80%
Hope i helped!!! :D

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User: Translate the following words to algebra symbols, using "n" as the variable. Seven is two less than twice a number.
muminat
7 = 2n - 2

n= a number so twice a number is 2n and 7 is 2 less than twice this number.
7 0
3 years ago
How do you use the distance formula and slope formula to find the lengths of a quadrilateral?
Natasha_Volkova [10]
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5 0
3 years ago
2x - 7 + x - 11 = 3x - 11<br><br><br> X = ?
Gekata [30.6K]

Answer:                                  -7=0 --> Impossible

Step-by-step explanation:  

2x-7+x-11= 3x-11

2x+x-7-11=3x-11

3x-18=3x-11

3x-18+11=3x

3x-7-3x=0

-7=0

Impossible

3 0
3 years ago
3) How many liters of a 20% acid solution must be mixed with a 60% solution to obtain 40 liters of a 35% solution? (25,15)THATS
serg [7]
<span>let x = the number of liters of the 20% solution. 

let y = the number of liters of the 60% solution. 

you want x + y to be equal to 40 liters. 

x is the number of liters total in the first solution.
y is the number of liters total in the second solution. 

you want .2 * x + .6 * y to be equal to .35 * 40 

.2 * x is the number of liters of acid in the first solution.
.6 * y is the number of liters of acid in the second solution.
.35 * 40 is the number of liters of acid in the final solution. 

you have two equations that need to be solved simultaneously. 

they are: 

x + y = 40
.2x + .6y = .35*40 

simplify these equations to get: 


x + y = 40
.2x + .6y = 14 

you can solve by substitution or by elimination or by graphing.
i will solve this one by graphing.
this means to graph both equations and find the intersection. 

the graph looks like this: 

 
the graph says the intersection is at the coordinate point of (25,15). 

this means that x = 25 and y = 15. 

x is the number of liters of the 20% solution.
y is the number of liters of the 60% solution. 

the formula of .2x + .6y = 14 becomes .2 * 25 + .6 * 15 = 14.
simplify this equation to get 14 = 14.
this confirms the solution is good. 
</span>
8 0
3 years ago
Read 2 more answers
Can you simplify 14/15??
DiKsa [7]
No you cannot.

This is because 14 and 15 do not have any common factors.
6 0
3 years ago
Read 2 more answers
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