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inna [77]
2 years ago
7

What is the answer to negative three fourths plus four fiths

Mathematics
1 answer:
Tamiku [17]2 years ago
6 0

Answer:

1/20

Step-by-step explanation:

-\frac{3}{4}+\frac{4}{5}=

-3/4=-15/20

4/5=16/20

16/20+-15/20=1/20

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What the percent of 160 is 56? Use the bar model
kow [346]

Answer:

35%

Step-by-step explanation:

See attached for visual

  • 160= 8*20
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  • 56= 8*7
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56 is 35% of 160

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3 years ago
Find all the zeroes of the equation. x4 – 6x2 – 7x – 6 = 0
NeX [460]

Answer:

-2, 3,  -0.5 + 0.866i,   -0.5 - 0.866i.

Step-by-step explanation:

As the last term is -6 , +/- 2 , +/- 3 are possible zeroes.

Try 2:-

(2)^4 - 6(2)^2 - 7(2) - 6 = -28 so  2 is not a zero.

3:-

(3)^4 - 6(3)^2 - 7(3) - 6 = 0 so 3 is a zero.

(-2)^4 - 6(-2)^2 - 7(-2) - 6 =  0 so -2 is also a zero.

Divide the function by (x +2)(x - 3),  that is  x^2 - x - 6

gives  x^2 + x + 1

x^2 + x + 1

So we have x^2 + x + 1 = 0

x =  [-1 +/- √(1^1 - 4*1*1)] / 2

= -1 + √(-3) / 2 , - 1 - √(-3)  / 2.

= -0.5 + 0.866i, -0.5 - 0.866i

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3 years ago
I need some help... Algebra Hw
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Answer:

Step-by-step explanation:

2.A

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Step-by-step explanation:

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