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Wewaii [24]
3 years ago
7

I am back on you tube . my channel name - superio s // subscribe and leave a comment​

Mathematics
1 answer:
Elena-2011 [213]3 years ago
4 0

Answer:

okayyyyyyyyyyyyyyyyy

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Define a variable , write an inequality , and solve the problem:
Lady bird [3.3K]

Answer:

Step-by-step explanation:

n-4\le 8\\ \\ n\le 12

8 0
3 years ago
Use the quadratic formula to solve the equation: 8x(x - 2) - 20 = 5x(x - 4)​
FromTheMoon [43]

Answer: x = 2, -\frac{10}{3}

Write the equation in standard form: ax^{2} + bx + c = 0.

8x(x - 2) - 20 = 5x(x - 4)\\\\8x^{2} - 16x - 20 = 5x^{2} - 20x\\\\3x^{2} - 16x - 20 = -20x\\\\3x^{2} + 4x -20 = 0

Use the quadratic formula. <em>(+-) = </em>±

\frac{-b (+-) \sqrt{b^{2} - 4ac } }{2a}

Substitute in the values, where a = 3, b = 4, and c = -20, and simplify.

\frac{-4(+-)\sqrt{(4)^{2} - 4(3)(-20)} }{2(3)} \\\\\frac{-4(+-)\sqrt{16 + 240} }{6}} \\\\\frac{-4(+-)\sqrt{256} }{6} \\\\\frac{-4(+-)16}{6} \\\\\frac{-4 + 16}{6}, \frac{-4 - 16}{6} \\\\\frac{12}{6}, \frac{-20}{6} \\\\2, -\frac{10}{3}

x = 2, -\frac{10}{3}  

3 0
4 years ago
a shop owner bought 30 folders and some journals.he paid $82.50 for the folders.Each journal costs 10 times as much as a folder
NeTakaya
To solve this one just take 82.50/30=2.75 we use these numbers because we need to divide the total price by the amount bought to see the unit price. Next we take 2.75*10 because the folders are 10x cheaper then the journals which is 27.5. So we now know that each journal costed 27.5 

Enjoy!=)
7 0
3 years ago
Read 2 more answers
A - 6 - 6a = 4<br><br> find the value of a
DaniilM [7]

Answer:

-2

Step-by-step explanation:

a - 6 - 6a = 4

a-6a=10

-5a=10

a=10/-5

a=-2

8 0
3 years ago
Read 2 more answers
Help to solve the equation​
PIT_PIT [208]

Answer:

n = -1.25

Step-by-step explanation:

S(ABCD) = AB × AD

S(ABCD) = 2n × (4n + 5)

S(ABCD) = CD × AD

2n × (4n + 5) = CD × (4n + 5)

n = -1.25

PLEASE MARK ME AS BRAINLIEST AND HAVE A NICE DAY :)

5 0
2 years ago
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