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BlackZzzverrR [31]
3 years ago
12

What is |12.8| equal I am so confused

Mathematics
1 answer:
irakobra [83]3 years ago
3 0

Answer:

|12.8| has a magnitude of 12.8

If that's not what you are asking, here's another possible answer:

12.8=12 4/5

12.8= 1280%

Step-by-step explanation:

Hope this helps!

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Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth.
likoan [24]

Answer:

Thus, the two root of the given quadratic equation x^2+4=6x is 5.24 and 0.76 .

Step-by-step explanation:

Consider, the given Quadratic equation, x^2+4=6x

This can be written as ,  x^2-6x+4=0

We have to solve using quadratic formula,

For a given quadratic equation ax^2+bx+c=0 we can find roots using,

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}  ...........(1)

Where,  \sqrt{b^2-4ac} is the discriminant.

Here, a = 1 , b = -6 , c = 4

Substitute in (1) , we get,

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

\Rightarrow x=\frac{-(-6)\pm\sqrt{(-6)^2-4\cdot 1 \cdot (4)}}{2 \cdot 1}

\Rightarrow x=\frac{6\pm\sqrt{20}}{2}

\Rightarrow x=\frac{6\pm 2\sqrt{5}}{2}

\Rightarrow x={3\pm \sqrt{5}}

\Rightarrow x_1={3+\sqrt{5}} and \Rightarrow x_2={3-\sqrt{5}}

We know \sqrt{5}=2.23607(approx)

Substitute, we get,

\Rightarrow x_1={3+2.23607}(approx) and \Rightarrow x_2={3-2.23607}(approx)

\Rightarrow x_1={5.23607}(approx) and \Rightarrow x_2=0.76393}(approx)

Thus, the two root of the given quadratic equation x^2+4=6x is 5.24 and 0.76 .

7 0
3 years ago
Read 2 more answers
Micaela bought for posters. A week later half of all her posters were lost during a move. There are now only 12 posters left. Ho
Nikolay [14]

Answer:24

Step-by-step explanation: If she bought x amount of posters and had 12 left after, you'd multiply 12 by 2 and get 24. Half of 24 is 12. So Micaela bought 24 posters.

5 0
3 years ago
Read 2 more answers
Use a division ladder to find the GCF of 34 and 60. A4 B3 C1 D2
Sloan [31]

Answer:

D.2


Step-by-step explanation:

First, you need to divide 34 and 60 by A.4, when you divide that you see that 4 dose not go in to 34 evenly and go"s in to 60 evenly, so this is incorect.


Now we will divide 34 and 60 by B.3, when you divide, you see that 3 dose not go into 34 evenly and go"s in to 60 evenly, so this is also incorect.


Then we divide 34 and 60 by C.1, when we divide this one you find that 1 go"s in to 34 evenly and 60 evenly, so this is a posible answer.


finally we divide 34 and 60 by D.2, when we do this we find that 2 go"s in to 34 evenly and 60 evenly, so this is also a posible answer.


All though C. and D. both go in to 34 evenly and 60 evenly, we are looking for the GCF (Greatest Common Factor). So the biggest number of C.1 and D.2, is D.2


So the answer is D.2.


Hoped this helped, Have a grate day!

5 0
3 years ago
PLEASE HELP! WILL GIVE BRAINLIEST TO THE CORRECT ANSWER AND ONLY IF ITS THE CORRECT ANSWER!
UkoKoshka [18]
The step most likely to follow this is 2x = 25 because you next want to add 5 to both sides.
8 0
3 years ago
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Reflection followed by a dilation, congruent or similar?
ddd [48]

Answer:

<h2>similar</h2>

Step-by-step explanation:

it'll be a different size and that wouldn't matter because it would still have the same area

6 0
3 years ago
Read 2 more answers
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