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Alexandra [31]
2 years ago
5

Suppose you did a survey of male shoes size and the mean of that survey was size 10 with a standard deviation of 1.5. What is th

e Z-score of a size 8.5?
Mathematics
1 answer:
bogdanovich [222]2 years ago
3 0

Answer:

-1

Step-by-step explanation:

From 10 to 8.5   is  - 1.5  

   this is -1   S.D.   below the mean

(8.5 - 10)/1.5 = -1

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In a right triangle, if a = 8in and c = 14in, what is b? Round to three decimal places.
Arte-miy333 [17]

Answer:

11.49

Step-by-step explanation:

If A=8

And C=14 then

4 0
3 years ago
Derivative of y=(3x+5)^3​
UkoKoshka [18]

\\ \sf\longmapsto \dfrac{dy}{dt}

\\ \sf\longmapsto \dfrac{d}{dt}(3x+5)^3

\\ \sf\longmapsto \{3(3x+5)\}^2

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\\ \sf\longmapsto 9x^2+2(9x)(15)+(15)^2

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6 0
3 years ago
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Solve for the value of r. (8r+6)° (9r-7)​
lukranit [14]

Answer:

r = 13

Step-by-step explanation:

these angles are vertical and are congruent

8r + 6 = 9r - 7

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8 0
3 years ago
-4(3 - 2x) + 2x = 2x - 8
Dennis_Churaev [7]

Answer:

C) x = ½

Step-by-step explanation:

Using the <em>Distributive Property</em> and combining like-terms will give you this:

-12 + 10x = 2x - 8

- 10x -10x

--------------------

-12 = -8x - 8

+ 8 +8

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-4 = -8x [Divide by -8]

½ = x

I am joyous to assist you anytime.

4 0
3 years ago
Use the distributive property to find the product
dalvyx [7]

Answer:

1st one: -24a-6b-36c

2nd one: 14mn-12m

Step-by-step explanation:

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2nd one: Multiply '2m' w/ '7n' and '-6'

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3 years ago
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