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3 years ago

Need help please asap

Mathematics

1 answer:

Oxana [17]3 years ago

3 0

A) 86m
B)58in
C)69ft
D)37cm

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Find the arthmetic and the geometric means of 4 and 9

horrorfan [7]

Answer:

Step-by-step explanation:

first term (a) = 4

last term (b) = 9

Arithmetic mean (AM)

= ( a + b) / 2

= ( 4 + 9 ) / 2

= 13/2

= 6.5

Geometric mean (GM)

= √a *b

=√4 * 9

=√36

= 6

hope it helps :)

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3 years ago

Find arc length CDE geometry

Simora [160]

I don’t think you can calculate the arc without the radius. All I know is that the angle is 110 degree

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3 years ago

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

Order the functions from the narrowest graph to the widest graph. PLEASE HELP!!!

Mkey [24]

H(x) = 4x², g(x) = -2x², f(x) = 1/4x²

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4 years ago

What is the measure of angle a in a triangle when the only other angle is 70

max2010maxim [7]

Answer:

I am not exactly sure about this, but if the triangle is isosceles, then the other two angles should both be 55 degrees.

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3 years ago

Need help please asap​

Need help please asap