2 years ago

Find the value of x. Round to the nearest tenth

Mathematics

1 answer:

VladimirAG [237]2 years ago

7 0

Answer:

36.869 or 36.87

Step-by-step explanation:

first, you find which trig function you are using. in this case, tangent.

then, you put calculate the arctan(3/4) which is 36.96989765

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2 years ago

I need help on question 12 asap!! My assignment is due in 20 minutes and I still got other problems to solve.

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$2.27:) hope this helps!!

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Read 2 more answers

(-3)(+4)=?<br> Can someone tell me the answer to this?

slava [35]

Answer:

-12, or 1 (see explanation)

Step-by-step explanation:

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2 years ago

Solve for y x=y^2+4y

Lorico [155]

$x=y^2+4y\\ y^2+4y-x=0\\\Delta=4^2-4\cdot1\cdot(-x)=16+4x\\\\
1.\ \Delta0\\
\sqrt{\Delta}=\sqrt{16+4x}=\sqrt{4(4+x)}=2\sqrt{x+4}\\
y_1=\frac{-4-2\sqrt{x+4}}{2\cdot1}=-2-\sqrt{x+4}\\
y_2=\frac{-4+2\sqrt{x+4}}{2\cdot1}=-2+\sqrt{x+4}\\$

-----------------------------------------------------

$x=y^2+4y\\ y^2+4y-x=0\\
y^2+4y+4-4-x=0\\
(y+2)^2=x+4\\
y+2=\sqrt{x+4} \vee y+2=-\sqrt{x+4}\\
y=-2+\sqrt{x+4} \vee y=-2-\sqrt{x+4}\\$

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3 years ago