3 years ago

I need help with this question fast! i don't have a lot of time! can someone help me please???

1 answer:

5 0

16x^4-81y^4 difference of perfect squares...

(4x^2-9y^2)(4x^2+9y^2) that's one of the equivalents...

(2x+3y)(2x-3y)(4x^2+9y^2) that's another one of them...

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Solve for the roots in simplest form using the quadratic formula:<br>4x2 – 12x = -5

Art [367]

Answer:

x=2.5&.5

Step-by-step explanation:

The quadratic formula is (-b+or-sqrt(b^2-4ac)/2a

12+or-sqrt((-12^2)-4(4)(5))

12+or-sqrt(144-80)

12+or-sqrt(64)

(12+8)/8 and (12-8)/8

x=2.5 and x=.5

7 0

3 years ago

Read 2 more answers

Triangle OBC is a right triangle drawn on a coordinate plane. Side OC lies on the x-axis, the coordinates of point O are (0, 0),

Rudik [331]

Long leg = 8 → opposite
short leg = 6 → adjacent
hypotenuse = ?

8² + 6² = c²
64 + 36 = c²
100 = c²
√100 = √c²
10 = c

sin ∠BOC = opposite / hypotenuse
sin ∠BOC = 8 / 10
sin ∠BOC = 0.80

tan ∠BOC = opposite / adjacent
tan ∠BOC = 8 / 6
tan ∠BOC = 1.33