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3 years ago

12(x+4)+3(-3-2x)=71 what does x equal

Mathematics

2 answers:

devlian [24]3 years ago

8 0

Answer:

Exact Form: x = 16/3

Decimal Form: x = 5.333...

Mixed Number Form: x = 5 1/3

Step-by-step explanation:

RUDIKE [14]3 years ago

4 0

X=3 let me know if this is right ;)

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3 years ago

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The equation of line AB is (y−3) = 5 (x − 4). What is the slope of a line perpendicular to line AB?

Darina [25.2K]

Answer:

The perpendicular slope would be -1/5.

Step-by-step explanation:

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2 years ago

Suppose you have a water-balloon launcher. The balloon is 3 ft high when it leaves the launcher. Use the equation 0 = ?16t2 + 38

mario62 [17]

Answer:

t = 2.5 s

Step-by-step explanation:

Suppose you have a water-balloon launcher. The balloon is 3 ft high when it leaves the launcher. Its equation is :

$16t^2 + 38.8t + 3 =0$

The above equation is a quadratic equation. The general equation is :

$ax^2+bx+c=0$

Here, a = 16, b = 38.8 and c = 3

The solution of quadratic equation is given by :

$x=\dfrac{-b\pm \sqrt{b^2-4ac} }{2a}\\\\t=\dfrac{-38.8\pm \sqrt{(38.8)^2-4\times (-16)\times 3} }{2\times (-16)}\\\\t=\dfrac{-38.8+\sqrt{(38.8)^{2}-4\times-16\times3}}{-2\times16}, \dfrac{-38.8-\sqrt{(38.8)^{2}-4\times-16\times3}}{-2\times16}\\\\t=-0.075\ s,2.5\ s$

So, at t = 2.5 s the balloon is in air.

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2 years ago