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tino4ka555 [31]
3 years ago
7

Need help !! Please help

Mathematics
1 answer:
Sav [38]3 years ago
5 0
Sorry this is hard to read :-(
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a data set has a mean of 68 and standard deviation of 6. An element in this set is 51. What is z-score for 51? Round your answer
gogolik [260]

z = -2.83

<u>Explanation:</u>

Given:

Mean, μ = 68

Standard deviation, σ = 6

Data point, x = 51

Z score, z = ?

We know:

z = \frac{data point - mean}{standard deviation} \\\\z = \frac{x - u}{p}

Substituting the value we get:

z = \frac{51-68}{6} \\\\z = -2.83

A negative z score says that the data point is below average.

4 0
3 years ago
Lila decided to make more baked goods for the bake sale. She used 1/8 lb less flour to make bread than to make cookies. She used
lord [1]

Answer:

Ok so we are trying to find out how much flour she used to make brownies so we already know that she used 1/2 flour to make bread and She uses 1/8 flour less flour to make bread than to make cookies so if we add 1/2 and 1/8 we will get the amount of flour she used to make the cookies so 1/2 + 1/8 = 5/8 so now that we have the amount of flour she used to make the cookies  we know that that is 1/4 more flour than brownies so if we subtract 5/8 by 1/4 we will get are answer to how much flour she uses to make brownies so 5/8 - 1/4 = 3/8 and that's your answer do you understand?

Step-by-step explanation:

3 0
2 years ago
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Help picture below problem 6
r-ruslan [8.4K]

Answer:

option B is the correct answer

Step-by-step explanation:

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2 years ago
Y=3x² - 6x +9
Harlamova29_29 [7]

Answer:

9

Step-by-step explanation:

y = 0

y = 3(0)^2-6(0) + 9

y = 9

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3 years ago
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What is the equation of a line that goes THROUGH (-2, 3) and is PERPENDICULAR to the line
andre [41]
3=-2+B. +2 +3 B=5 “y=1/3x+5” in perpendicular lines slope1times slope 2 creates a negative (-1) example(-3/1)(1/3)=-1 so slope 1 multiplied by slope 2 is the opposite inverse which creates a negative 1
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3 years ago
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