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Luden [163]
3 years ago
9

I need help on my math

Mathematics
1 answer:
uysha [10]3 years ago
8 0
The answer should be the first one exponential
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A^2-a+12=0 I need the roots
kumpel [21]

Answer:

a = 1/2 (1 ±sqrt(47))

Step-by-step explanation:

a^2-a+12=0

We will complete the square

Subtract 12 from each side

a^2-a+12-12=0-12

a^2-a=-12

The coefficient of a = -1

-Divide by 2 and then square it

(-1/2) ^2 = 1/4

Add it to each side

a^2 -a +1/4=-12 +1/4

(a-1/2)^2 = -11 3/4

(a-1/2)^2= -47/4

Take the square root of each side

sqrt((a-1/2)^2) =sqrt(-47/4)

a-1/2 = ±i sqrt(1/4) sqrt(47)

a-1/2= ±i/2 sqrt(47)

Add 1/2 to each side

a-1/2+1/2 = 1/2± i/2 sqrt(47)

a =  1/2± i/2 sqrt(47)

a = 1/2 (1 ±sqrt(47))

8 0
3 years ago
Dpf-sdzm-tdo = common girls<br>​
arlik [135]

Answer: I don’t understand

Step-by-step explanation:

Next time actually ask something about college math

6 0
3 years ago
Which inequalities correctly show the relationship between the numbers 13, −4, and −17?
lutik1710 [3]

Answer:

13 > -17 < -4

Step-by-step explanation

13 = postive number

-17 and -4 = negtive.

13 is greater than -17

Since negtive is oppistie of postive it goes backwards.

So -4 is greater than -17

(Im new to this so Im not sure if it is correct)

3 0
3 years ago
Someone pls help it a exam I’ll give brainiest :)
Zanzabum
I think it’s the first answer! Good luck!
6 0
3 years ago
How many meters does 20 yards equal
Yuliya22 [10]

Answer:


Step-by-step explanation:One yard equals 0.9144 meter. Therefore 20 yards = 20 * 0.9144 = 18.288 meters


3 0
3 years ago
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