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fiasKO [112]
3 years ago
10

What is the length of XPY in terms of pi?

Mathematics
1 answer:
rosijanka [135]3 years ago
8 0

Answer:

i dont know

Step-by-step explanation:

i don know

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Find the discriminant, and determine the number of real solutions. then solve x^2 +8x+20=0
vodomira [7]

Answer:

Part 1) The quadratic equation has zero real solutions

Part 2) The solutions are

x_1=-4+2i   and x_2=-4-2i

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form ax^{2} +bx+c=0 is equal to

x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}

in this problem we have

x^{2}+8x+20=0  

so

a=1\\b=8\\c=20

The discriminant is equal to

D=(b^{2}-4ac)

If D=0 -----> the quadratic equation has only one real solution

If D>0 -----> the quadratic equation has two real solutions

If D<0 -----> the quadratic equation has two complex solutions

<em>Find the value of D</em>

D=8^{2}-4(1)(20)=-16 -----> the quadratic equation has two complex solutions

<em>Find out the solutions</em>

substitute the values of a,b and c in the formula

x=\frac{-8(+/-)\sqrt{8^{2}-4(1)(20)}} {2(1)}

x=\frac{-8(+/-)\sqrt{-16}} {2}

Remember that

i=\sqrt{-1}

x=\frac{-8(+/-)4i} {2}

x_1=\frac{-8(+)4i} {2}=-4+2i

x_2=\frac{-8(-)4i} {2}=-4-2i

8 0
3 years ago
What is the probability of<br> spinning a C?<br> В В<br> A В<br> [?]%<br> СА<br> СС
Mkey [24]
3/8 * 100 = 37.5%
To an integer it is 38%
5 0
3 years ago
-4x = -24 what is x?
andreyandreev [35.5K]

Answer:

6

Step-by-step explanation:

All you have to do is divide -4 on both sides and you get 6!

-4x= -24

/-4   /-4

x  =  6

I hope this helps, and have a great day!

6 0
3 years ago
A single batch of cookies requires two cups of sugar and three cups of flour. If more than one batch or a partial batch was made
HACTEHA [7]

Step-by-step explanation:

4 cup of sugar = 6 cup of flour

4.5 cup of sugar = 6.75 cup of flour

5 cup of sugar = 7.5 cup of flour

7.5 cup of sugar = 11.25 cup of flour

8 cup of sugar = 12cup of flour

hope it helps you

6 0
3 years ago
Read 2 more answers
Will AWARD BRAINIEST!!!!! 20 POINTS
Vesna [10]

Answer:

6

Step-by-step explanation:

The 3 by 2 rectangle is 6 so 15-6=9

3 x (x-2) x 0.5 = 9

3 x (6-2=4) 4 = 12 / 2 = 6

5 0
3 years ago
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