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Artyom0805 [142]
3 years ago
12

Find the percent of decrease 20 to 15

Mathematics
1 answer:
marshall27 [118]3 years ago
3 0

Answer:

25%

Step-by-step explanation:

I look it up and made sure trust its right

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State the domain and range of the relation { (-3,2),(4,1)(0.3),(5,2),(2,7)} .Then determine whether the relation is a function.
Novosadov [1.4K]
Answer:

Domain: {-3, 0, 2, 4, 5)
Range: {1, 2, 3, 7}

The relation is a function because for every x-value there is one y-value. In other words, for every input there is one output.
6 0
3 years ago
X^2+x-2/1-x^2 ÷ 2x^2-6x-20/x^2-4x-5
ad-work [718]
<span>X^2+x-2/1-x^2 ÷ 2x^2-6x-20/x^2-4x-5

   (x + 2)(x - 1)           (x - 5)(x + 1)
= ------------------- *  ---------------------
   (1 + x)(1- x)           2(x + 2)(x - 5)

</span>    (x - 1)        
= ----------
   2(1- x)    

    - (1 - x)        
= -------------
     2(1 - x)    

= -1/2

answer
-1/2 
   
7 0
3 years ago
The school that molly goes to is selling tickets to a choral performance. On the first day of ticket sales the school sold 6 sen
krek1111 [17]
The cost of a senior citizen ticket is $15 and the cost of a student ticket is $12.

How did I get this?
We know that 6 citizen tickets and 7 student stickers sold for $174 the first day. And 10 citizen tickets and 14 student tickets sold for $318 the second day.

1. create two equations out of this: C= citizen cost per ticket and S = student cost per ticket.

  6C + 7S = $174
10C + 14S = $318

2. Use process of elimination. Multiply the first equation by 2 because we want two variables to cancel out.

-12C - 14S = -$348
10C + 14S = $318
Combine like terms.

-2C = $30
Divide by -2 on both sides. The left side cancels out.

C = $30/-2
C = -$15 (In this case the negative doesn't matter)

C = $15 (cost of senior citizen ticket)

Plug the value of C into any of the two equations so we can get the value of S.

6($15) + 7S = $174
Distribute the 6 into the parenthesis.

$90 + 7S = $174
Subtract both sides by $90 and the left side will cancel out.

7S = $84
Divide both sides by 7.
S = $12

Student ticket: $12
Senior citizen ticket: $15




5 0
3 years ago
Please help fast its quiz. :(
dezoksy [38]

Answer:

What is the question??

Thank you for the points

8 0
2 years ago
Read 2 more answers
Is this correct? pLeAsE lOoK aT tHe ImAgE bElOw!!! Have a great day!
Scrat [10]
Answer
False true false
Explanation plz give brainliest
3 0
3 years ago
Read 2 more answers
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