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Elenna [48]
2 years ago
14

Find X, last two anwsers are 4 and 8

Mathematics
1 answer:
IgorLugansk [536]2 years ago
8 0

Answer:

9

Step-by-step explanation:

8X+4=360-108-80-96

8X+4=76

8X=76-4

8X=72

X=72/8

X=9

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jane paid $40 for an item after she received a 20% discount. janes friend says this means that the original price of the item is
olga55 [171]
48x0.2= $9.6
$48-9.6=$38.40 Her friend is incorrect. 
40/48 =0.83 or about 83% So, in this case she only got 17% off. :)
<span>Hope I helped </span>
3 0
3 years ago
All zeros of polynomial function 3x^4 +14x^2 -5
Marizza181 [45]

Answer:

Correct answer:  x₁ = 1 / √3 = √3 / 3  or  x₂ = - 1 / √3 = - √3 / 3

Step-by-step explanation:

Given:

3 x⁴ + 14 x² - 5 = 0   biquadratic equation

this equation is solved by a shift  x² = t and get:

3 t² + 14 t - 5 = 0

t₁₂ = (-14 ± √14² - 4 · 3 · 5) / 2 · 3 = (-14 ± √196 + 60) / 6

t₁₂ = (-14 ± √256) / 6 = (-14 ± 16) / 6

t₁ = -5   or  t₂ = 1 / 3

the solution t₁ = -5 is not accepted because it cannot be x² = -5

we accepted  t₂ = 1 / 3

x² =  1 / 3  ⇒  

x₁ = 1 / √3 = √3 / 3  or  x₂ = - 1 / √3 = - √3 / 3

God is with you!!!

5 0
3 years ago
Find the value of x needed to make the equation True. 3/4(20x-8)-3=54
olasank [31]

Answer:

The answer is option B, x = 4.2

6 0
2 years ago
The equations x minus 2 y = 1, 3 x minus y = negative 1, x + 2 y = negative 1, and 3 x + y = 1 are shown on the graph below. On
Basile [38]

Answer: (a) x + 2y = -1  and  3x + y = 1

<u>Step-by-step explanation:</u>

I am not sure what the purpose was for the colored lines but I included them on the graph (below).

6 0
3 years ago
Read 2 more answers
Plz help me people guys xx :)
kaheart [24]

Answer:

48.9

Step-by-step explanation:

Subtract 2 from 99.8 = 97.8

Divide 97.8 by 2 - 48.9

6 0
3 years ago
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