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3 years ago

Please help .............

Mathematics

1 answer:

Tresset [83]3 years ago

8 0

1. SSS 2. SAS 3. HL 4. AAS 5. HL 6. AAS 7. NP 8. SSS 9. ASA 10. NP

idk i'm probably wrong

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Please help me with these 3 questions!

juin [17]

Answer:

1) -4x-6x+8x=2-6

-2x=-4

x=-2

2)3x-4x=12-15

-1x=-3

x=3

3) 12.5x+10.25=680-410

22.75x=270

x=11.86

8 0

3 years ago

Let x denote the courtship time for a randomly selected female–male pair of mating scorpion flies (time from the beginning of in

gavmur [86]

Complete Question:

a) Is it plausible that X is normally distributed?

b) For a random sample of 50 such pairs, what is the (approximate) probability that the sample mean courtship time is between 100 min and 125 min?

Answer:

a) It is plausible that X is normally distributed

b) probability that the sample mean courtship time is between 100 min and 125 min is 0.5269

Step-by-step explanation:

a)X denotes the courtship time for the scorpion flies which indicates that is a real - valued random variable, and since normal distribution is a continuous probability distribution for a real valued random variable, it is plausible that X is normally distributed.

b) Probability that the sample mean courtship time is between 100 min and 125 min

$\mu = 120\\n = 50$

$P(x_{1} < \bar{X} < x_{2} ) = P(z_{2} < \frac{x_{2}- \mu }{SD} ) - P(z_{1} < \frac{x_{2}- \mu }{SD})$

$SD = \sqrt{\frac{\sigma^{2} }{n} } \\SD = \sqrt{\frac{110^{2} }{50} } \\SD = 15.56$

$P(100 < \bar{X}$

From the probability distribution table:

$P(z_{2} < 0.32 ) = 0.6255\\ P(z_{1} < -1.29) = 0.0986$

$P(100 < \bar{X}$

6 0

4 years ago

Mrs. Virtueson has 1/4 of a pecan pie. She wants to give half

cricket20 [7]

Answer:

What fractional part of a pie will each get

each will get 1/8

6 0

3 years ago

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so uh i have a question about STEAM the app ik this is a math website but uh my question is lets say your playing roblox or mine

yawa3891 [41]

Answer:

Step-by-step explanation:

First off, steam isn't a math website.

On discord, it doesn't show steam specifically, but if you're playing a game THROUGH steam then yes, it will show.

To hide this, go to options -> game activity -> and disable "Display currently running game as a status message" on discord.

If you want to hide your status on steam, just put your status to invisible :)

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4 years ago

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Given a cube with a volume of 36 cm3, what is the volume of a square pyramid that can fit perfectly inside the cube?

LUCKY_DIMON [66]

Hope you know that formula for volume of a cube is area of base time height
and volume of a square pyramid is area of base time height divide 3
- so in this your exercise case we know that area of cube is 36 cm^3 what is area of base time height
- so this mean that the volume of a square pyramide what can fit perfectly inside the cube will be equal 36/3 = 12 cm^3

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4 years ago

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Please help .............​

Please help .............