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Licemer1 [7]
3 years ago
5

Solve for x: 2 over 5 (x − 4) = 2x. −8 negative 1 over 2 1 −1

Mathematics
1 answer:
vlabodo [156]3 years ago
5 0
2/5(x - 4) = 2x
2/5x - 8/5 = 2x....multiply everything by 5
2x - 8 = 10x
-8 = 10x - 2x
-8 = 8x
-8/8 = x
-1 = x <===
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Solve. 3x2 + 4x = –5 <br> using quadratic equation ...?
cupoosta [38]
3x^2 + 4x - 5 = 0 
x = [-b ±√(b^2 - 4ac)]/2a 

a = 3 
b = 4 
c = -5 

x = [-4 ±√(16 + 60)]/6 
x = [-4 ±√76]/6 
x = [-4 ±√(2^2 * 19)]/6 
x = [-4 ±2√19]/6 
x = [-2 ±√19]/3 

x = [-2 + √19]/3 
x = [-2 + 4.35]/3 
x = 2.35/3 
x = 0.78 (rounded to the nearest hundredth) 

x = [-2 - ±√19]/3 
x = [-2 - 4.35]/3 
x = -6.35/3 
x = -2.12 (rounded to the nearest hundredth) 

<span>∴ x = -2.12 , 0.78 (rounded to the nearest hundredth)</span>
6 0
3 years ago
Answer this with process and details plz thanks
BaLLatris [955]

First part your answer is 8 second part is c.

4 0
3 years ago
I need help with this problem
polet [3.4K]

Answer:

in this case you can use protector also but

there is another way

Step-by-step explanation:

as we know sum of a triangle is 180 degree

so let's D= 2x,x

35+x+2x=180

3x+35=180

3x=180-35

3x=145

x=145÷3

x =46.06

8 0
3 years ago
Read 2 more answers
Convert the following into millilitres a)13 litres​
skelet666 [1.2K]

Answer:

13,000ml

Step-by-step explanation:

1000ml = 1L.

We can rewrite this forumla as:

yL x 1000=ml. y=the number of liters.

In this problem, y=13. Thus:

13Lx1000= 13,000ml

I hope this helps!

7 0
3 years ago
Read 2 more answers
Answer Fast.............
Aleks04 [339]
1and 1/10 is correct

brainliest or nah lol
4 0
3 years ago
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