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2 years ago

Please help me i dont get either one of them i just need one of them. Please shiw steps. Thanks

Mathematics

1 answer:

pychu [463]2 years ago

5 0

NO.4:X=38

NO.5:X=41

NO.6:X=24

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Rom4ik [11]

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2 years ago

I dont really understand this??

jeyben [28]

Answer:

$x\geq -53$

Step-by-step explanation:

The inequality includes -53.

The interval notation is $\:[-53,\:\infty \:)$

$\{ x \in \mathbb{R}: x \geq -53 \}$

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3 years ago

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Which is the answer?

algol13

B or c that’s feels the most likely to be it

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3 years ago

What are the values of the variables in the triangle below?

harkovskaia [24]

Answer:

D) x=9 ; y=3√(3)

Step-by-step explanation:

$Sin(30)=\cfrac{y}{6\sqrt{3} }$

$\cfrac{18y}{6\sqrt{3}}=18\sin \left(30^{\circ \:}\right)$

$\sqrt{3}y=9$

$\cfrac{\sqrt{3}y}{\sqrt{3}}=\cfrac{9}{\sqrt{3}}$

$y=3\sqrt{3}$

$Cos(30)=\cfrac{x}{6\sqrt{3} }$

$\cfrac{18x}{6\sqrt{3}}=18\cos \left(30^{\circ \:}\right)$

$\sqrt{3}x=9\sqrt{3}$

$\cfrac{\sqrt{3}x}{\sqrt{3}}=\cfrac{9\sqrt{3}}{\sqrt{3}}$

$x=9$

Therefore, x=9 and y=3√(3)

8 0

2 years ago

Help needed!! Don’t know how to do!!

Aleks [24]

Answer:

D,0,2,-2

Step-by-step explanation:

2x^5-3x^3-20x=0

x(2x^4-3x^2-20)=0

x=0

or 2x^4-3x^2-20=0

put x²=t

2t²-3t-20=0

-20×2=-40

8-5=3

8×-5=-40

2t²-(8-5)t-20=0

2t²-8t+5t-20=0

2t(t-4)+5(t-4)=0

(t-4)(2t+5)=0

t=4

x²=4

x=2,-2

t=-5/2

x²=-5/2

it gives imaginary root. so real rational roots are 0,2,-2

3 0

3 years ago

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