3 years ago

I need help please (22 points or more in the future)

Mathematics

1 answer:

Bogdan [553]3 years ago

8 0

Answer:

pictures are blurry can you send to my Discord?

Step-by-step explanation:

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Find the mass of a book that has a weight of 14.7 newtons

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14.7Newtowns what unit of measure mist we use any specific

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3 years ago

Is it possible for an angle in a triangle to be opposite both the longest side of the triangle and the shortest side of the tria

Alekssandra [29.7K]

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3 years ago

Read 2 more answers

Please I need help with this question!

likoan [24]

Answer:

I. 60%

II. 75.4 kg

Step-by-step explanation:

We will use the z-scores and the standard normal distribution to answer this questions.

We have a normal distribution with mean 69 kg and variance 25 kg^2 (therefore, standard deviation of 5 kg).

I. What percentage of adult male in Boston weigh more than 72 kg?

We calculate the z-score for 72 kg and then calculate the associated probability:

$z=\dfrac{X-\mu}{\sigma}=\dfrac{72-69}{5}=\dfrac{3}{5}=0.6\\\\\\P(X>72)=P(z>0.6)=0.274$

II. What must an adult male weigh in order to be among the heaviest 10% of the population?

We have to calculate tha z-score that satisfies:

$P(z>z^*)=0.1$

This happens for z=1.28 (see attachment).

Then, we can calculate the weight using this transformation:

$X=\mu+z^*\cdot\sigma=69+1.28\cdot 5=69+6.4=75.4$

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3 years ago

3x+ (-5y)= 12 what are the values of a,b,& c?

IRISSAK [1]

Answer:

a=3

b=(-5)

c=12

........................

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3 years ago

I need this right now not later not 2 days later now

inn [45]

Answer:

2x+90+x=180 linear pair

3x=180-90

x=90/3=30

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3 years ago