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3 years ago

Which represent the solutions

Mathematics

1 answer:

givi [52]3 years ago

8 0

That looks hella hard

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The fitness center held a weight loss competition in which 128 people participated. The amount of weight loss was normally distr

iris [78.8K]

Answer:

Step-by-step explanation:

Given :

Sample size, n = 128

Mean, μ = 18

Standard deviation, σ = 5.4

Number of people who lost atleast 15 pounds :

The Zscore = (x - μ) / (σ)

Zscore = (15 - 18) / 5.4

Zscore = - 3 / 5.4

Zscore = - 0.5555

P(Z < - 0.555) = 0.28945

Number of people who lost atleast 15 pounds :

0.28945 * 128 = 37.0496

= 37 people

3 0

3 years ago

Sor-rey for posting again,I messed up on my last one...anyway,100 points and Brainlest! Please help ASAP!

Triss [41]

The answer of 4(2x^3 y^4 )^4/2(2x^2 y^6 )^3 after simplification will be

4 $x^{6} y^{-2}$

Step-by-step explanation:

To simplify

$\frac{4(2x^3 y^4 )^4}{2(2x^2 y^6 )^3}$ .

Using exponential law the exponents of variables will be added when multiplied as per rule

we get

$\frac{4[(2^4)(x^{3\times 4}) ( y^{4\times4} )] }{2[(2^3)(x^{2\times3} ) (y^{6\times3} )]}\\$

$\frac{4[(16)(x^{12}) ( y^{16} )] }{2[(8)(x^{6} ) (y^{18} )]}\\\\\frac{64x^{12}y^{16} }{16 x^{6}y^{18} }$

Now by dividing according to exponential rule the exponents of variables will be subtracted as per rule

$(\frac{64}{16} ) x^{12-6} y^{16-18} \\4 x^{6} y^{-2}$

So the answer of 4(2x^3 y^4 )^4/2(2x^2 y^6 )^3 after simplification will be

4 $x^{6} y^{-2}$

Keywords: Algebra

Learn more about algebra at:

#learnwithBrainly

6 0

3 years ago

Explain why the triangles are similar. Then find the missing length,

Law Incorporation [45]

6 because the small triangle is a dilation of 3

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2 years ago

The center circle of a soccer field prohibits a defender from being near the ball at the start or restart of a soccer game. On a

rosijanka [135]

In terms of diameter (d), the area (A) of a circle is given by the formula
A = (π/4)d²

You have d=20 yd, so the area of the circle is
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A = 100π yd² . . . . . . . . do the arithmetic
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3 years ago

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Here are the steps to solve the equation. Good luck!

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3 years ago