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Vladimir [108]
3 years ago
9

Which of the pairs of values will give the equivalent sale price

Mathematics
1 answer:
adell [148]3 years ago
4 0
B. a sale of 1/4 off the original of $100
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This is just algebra need some help 10 pts each, will give brainliest
Bogdan [553]

Answer:

\huge \boxed{ \boxed{z = 3}}

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>
  • equation
  • PEMDAS
<h3>let's solve:</h3>
  1. \sf simplify \: substraction :  \\  \frac{3}{ \frac{z - 2}{z} }  = 3z
  2. \sf simplify \: complex \: fractio n : \\  \frac{3z}{z - 2}  = 3z
  3. \sf cross \: multiplication :  \\ 3z = 3z(z - 2)
  4. \sf divide \: both \: sides \: by \:  3z :  \\  \frac{3z}{3z} =   \frac{3z(z - 2)}{3z} \\ 1 = z - 2
  5. \sf add \: 2 \: to \: bot h  \: sides :  \\  z - 2 +  2 = 1 + 2 \\ \therefore \: z = 3

6 0
3 years ago
The ratio of the number of volleyball to the number of basketballs in the P.E room is 4:7 .there are 21 basketballs . How many v
densk [106]
Let volleyball be v and let basketball be b.

v : b = 4 : 7,      b = 21

v : 21 = 4 : 7

v/21 = 4/7

7*v = 4*21

v = 4*21/7

v = 4*3

v = 12

Volleyballs are 12

Hope this helps.
8 0
3 years ago
Is 2y-4=10 a function
Oksana_A [137]
Yup yup yup. i think so
3 0
3 years ago
Read 2 more answers
Solve using the quadratic frmula 2x^2-5x=3
Mnenie [13.5K]

2x2−5x=3

I think the first step would be to

Subtract 3 from both sides

2x2−5x−3=3−3

2x2−5x−3=0

Then

For this equation: a=2, b=-5, c=-3

2x2+−5x+−3=0

Lastly you would

Use quadratic formula with a=2, b=-5, c=-3

I think your answer would then have to be...

x = 3 or x =  −1 /2

4 0
2 years ago
Read 2 more answers
N/8 -3 = 16. <br> A student got n=5 is the student correct yes or no<br> 50 points I guess
amid [387]

thank you for the points

5 0
2 years ago
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