What is the answer to 8(s^2+2s+3)+(2s+s+1)

s = (i sqrt(439))/16 - 19/16 or s = -(i sqrt(439))/16 - 19/16

Step-by-step explanation:

Solve for s:

1 + 3 s + 8 (s^2 + 2 s + 3) = 0

Expand out terms of the left hand side:

8 s^2 + 19 s + 25 = 0

Divide both sides by 8:

s^2 + (19 s)/8 + 25/8 = 0

Subtract 25/8 from both sides:

s^2 + (19 s)/8 = -25/8

Add 361/256 to both sides:

s^2 + (19 s)/8 + 361/256 = -439/256

Write the left hand side as a square:

(s + 19/16)^2 = -439/256

Take the square root of both sides:

s + 19/16 = (i sqrt(439))/16 or s + 19/16 = -(i sqrt(439))/16

Subtract 19/16 from both sides:

s = (i sqrt(439))/16 - 19/16 or s + 19/16 = -(i sqrt(439))/16

Subtract 19/16 from both sides:

 s = (i sqrt(439))/16 - 19/16 or s = -(i sqrt(439))/16 - 19/16

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!