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3 years ago

8

Select all the equations where x = 3 is a solution.

1 answer:

34kurt3 years ago

7 0

Answer:

Step-by-step explanation:

X +4=

8x=32

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Nuetrik [128]

Are you good and why are you saying pls help fast

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2 years ago

Solve 2csc^2x-2cscx-1=0 <br> for 0° ≤ x ≤ 360°

umka21 [38]

Answer:

Step-by-step explanation:

2 csc²x-2 csc x-1=0

or

$\frac{2}{sin^2x} -\frac{2}{sin x} -1=0\\multiply~by~sin^2x\\2-2sin~x-sin^2x=0\\sin^2x+2sinx-2=0\\sin ~x=\frac{-2 \pm\sqrt{2^2-4*1*(-2)} }{2*1} \\=\frac{-2 \pm\sqrt{4+8} }{2} \\=\frac{-2 \pm\sqrt{4*3} }{2} \\=\frac{-2 \pm2\sqrt{3} }{2} \\=-1\pm\sqrt{3} \\|sin~x| \le ~1\\so~sin~x=-1+\sqrt{3} \\sin~x=\sqrt{3} -1\\x=sin^{-1}(\sqrt{3} -1) \approx 47.06^\circ,180-47.06\\or~x=47.06^\circ,132.94^\circ$

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2 years ago

Is y=3x-8 proportional

Tanzania [10]

Step-by-step explanation:

YES! HOP THIS HELPS

7 0

2 years ago

Read 2 more answers

Jonathon has a bag that contains exactly one red marble (r), one yellow marble (y), and one green marble (g). He chooses a marbl

wariber [46]

Answer:

[ry, yr, gy, yg, rg, gr]-Any three picks from this sample space.

Step-by-step explanation:

-The bag contains exactly $1r, \ 1y, \ 1g \$ marbles.

-He picks one ball without looking, and chooses a second ball without replacing the first:

If the first is red, the the second is either yellow or green,
If the first is a yellow, then the second can be red or green,
If the first is green, then the second can be a red or yellow.

The sample space of the second pick is therefore:

[ry, yr, gy, yg, rg, gr]

Hence, any three picks from the sample space are correct possible outcomes.

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2 years ago

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FIND THE VOLUME OF THE SPHERE

svp [43]

Answer:

about 65.4 inches cubed

Step-by-step explanation:

The formula for the volume of a sphere is 4/3πr^3.

V = 4/3πr^3

= 4/3π(2.5^3)

= 20.83π = <u>about 65.4 inches cubed</u>

4 0

2 years ago