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Crazy boy [7]
3 years ago
8

3. Find BC 6. find m< A

Mathematics
1 answer:
sammy [17]3 years ago
7 0

Answer:

Step-by-step explanation:

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Val buys a computer for $920. If this is 115% of what the store paid for the same computer, how much did the store earn on the s
noname [10]

Hi!

We will solve this using rations, like this:

$920 equals to 115% = 1,15

$x equals to 100% = 1

_______________________

x = (920*1)/1,15

x = 920/1,15

x = 800

Store earned 15%, or in this case 920 - 800 = $120.

Hope this helps!

4 0
4 years ago
A collection of quarters and dimes is worth $12.40. There are 67 coins in all.
padilas [110]
Let:
x= quarters
y= dimes


x+y=67
and
.25x+.10y=12.40

x=67-y

.25(67-y)+.10y=12.40
16.75-.25y+10y=12.40
16.75-.15y=12.40
Lets rearrange this:
-.15y+16.75=12.40
        -16.75    -16.75
-.15y=-4.35
the negatives cancel out
.<u>15y</u>=<u>4.35
</u>.15<em /><em>     <u /></em>.15
y=29

Back to the original x=67-y
x=67-29
x=38

So,
x=38
y=29
<em />
5 0
4 years ago
Olya would like to find a way to reduce her current debt. The table below shows Olya’s monthly income, expenses and net income A
Viktor [21]
<span>b.<span>Olya could skip a month or two paying for her school loan and put the money towards her credit card debt.</span></span>
8 0
4 years ago
Read 2 more answers
35 customers increase by 40%
Anna11 [10]

Answer:

49 total customers

Step-by-step explanation:

first find 40% of 35 by multiplying 0.40 by 35

0.40 × 35 = 14

now add 14 to 35 to find the new total # of customers

14 + 35 = 49

4 0
3 years ago
Read 2 more answers
3(x-1) - 8 = 4(1+x) +5. Too hard, i keep getting confused
svet-max [94.6K]

3(x-1)-8=4(1+x)+5  

One solution was found :

                  x = -20

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    3*(x-1)-8-(4*(1+x)+5)=0  

Step by step solution :

Step  1  :

Equation at the end of step  1  :

 ((3•(x-1))-8)-(4•(x+1)+5)  = 0  

Step  2  :

Equation at the end of step  2  :

 (3 • (x - 1) -  8) -  (4x + 9)  = 0  

Step  3  :

Step  4  :

Pulling out like terms :

4.1     Pull out like factors :

  -x - 20  =   -1 • (x + 20)  

Equation at the end of step  4  :

 -x - 20  = 0  

Step  5  :

Solving a Single Variable Equation :

5.1      Solve  :    -x-20 = 0  

Add  20  to both sides of the equation :  

                     -x = 20

Multiply both sides of the equation by (-1) :  x = -20

One solution was found :

                  x = -20

hope this is wht u wanted

4 0
3 years ago
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