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3 years ago

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

$x^{2}+8x+20=0$

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

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

Find the value of D

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

Find out the solutions

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 spinning a C? В В A В [?]% СА 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:

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:

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