3 years ago

Factor completely: 4x2 + 25x + 6

1 answer:

7 0

(x + 6)(4x + 1)
x times 4x = 4x^2
x times 1 = x
6 times 4x = 24x
6 times 1 = 6
<span>And finally, by adding like terms, 4x^2 + 25x + 6

I hope this helps you! Good luck :)</span>

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alexgriva [62]

Answer:

x = 19, y = -5

Step-by-step explanation:

x + y = 14 => x= 14-y

2x + 4y = 18 => 2(x+2y)=18 => x+2y=9

x+2y=9 => (14 - y) + 2y = 9

14 + y = 9 => y = -5

x + (-5) = 14 => x=19

5 0

3 years ago

Use the cosine sum and difference identities to find the exact value.<br><br> COS(5pi/12)

nydimaria [60]

5π/12 = (5 · 180°) : 12 = 75°
cos 75° = cos ( 45° + 30° )= cos 45° cos 30° - sin 45° sin 30° =
=√2/2 * √3/2 - √2/2 * 1/2 = $\frac{ \sqrt{6} }{4} - \frac{ \sqrt{2} }{4}= \frac{ \sqrt{6} - \sqrt{2} }{4}$
=(2.4495 - 1.4142): 4 = 0.258825

8 0

3 years ago

Read 2 more answers

Add 5.6 + (-3.2) + (-2.3) PLEASE HELP! This is very time sensitive, have a nice day!

Tpy6a [65]

Answer:

0.1

Step-by-step explanation:

Take paranthesis away.

5.6-3.2-2.3

subtract 3.2 from 5.6

2.4-2.3=0.1