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abruzzese [7]
3 years ago
7

Which step did the student make and error in solving the equation?(step numbers in circled in blue font)

Mathematics
2 answers:
Maurinko [17]3 years ago
6 0

Answer:

it is A, because they wrote that they added 2x to 5x but didn't actually do that. it should be 7x.

Marina CMI [18]3 years ago
4 0
B I think





I hope this helps
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The manager of a warehouse would like to know how many errors are made when a product's serial number is read by a bar-code read
Bond [772]

Answer:

(a)\ \bar x =20.5

(b)\ \sigma = 14.54

Step-by-step explanation:

Given

x: 36, 14, 21, 39, 11, 2

Solving (a): The mean of the 6 samples.

This is calculated as:

\bar x = \frac{\sum x}{n}

So, we have:

\bar x =\frac{36+ 14+ 21+ 39+ 11+ 2}{6}

\bar x =\frac{123}{6}

\bar x =20.5

Solving (b): The sample standard deviation.

This is calculated using:

\sigma = \sqrt{\frac{\sum(x - \bar x)^2}{n-1}}

So, we have:

\sigma = \sqrt{\frac{(36 - 20.5)^2 + (14 - 20.5)^2 + (21 - 20.5)^2 + (39 - 20.5)^2 + (11 - 20.5)^2 + (2 - 20.5)^2}{6-1}}

\sigma = \sqrt{\frac{1057.5}{5}}

\sigma = \sqrt{211.5}

\sigma = 14.54

7 0
3 years ago
kelby has several pets.she has b, birds,c cats, and f frogs. in this expression b+(c+f) represents the total number of pets kelb
den301095 [7]

Answer:

The number of cats an frogs

Step-by-step explanation:

For some reason the equation has (c+f) grouped off from the rest, since in an equation the first step is to take care of things in the parentheses, first you must add the two together, and based on the description, you know that c is the number of cats and f is the number of frogs.  Therefore adding them together would get the total number of cats and frogs.

8 0
3 years ago
If <img src="https://tex.z-dn.net/?f=x%3D2z" id="TexFormula1" title="x=2z" alt="x=2z" align="absmiddle" class="latex-formula">,
Readme [11.4K]

Answer:

x = 1

z = 1/2

Step-by-step explanation:

z = 3/y

z = 3/6

z = 1/2

x = 2z

x = 2(1/2)

x = 1

8 0
3 years ago
Read 2 more answers
Write an expression for the calculation the difference of the products of 5 and 2 and 5 and 1
oee [108]
Let's review the terminology.  A product is what you get when you multiply two numbers.  So, the product of 5 and 2 is basically "5*2," and the product of 5 and 1 is "5*1."

The difference means when you subtract one from the other.  So, the difference of 5*2 and 5*1 means "(5*2)-(5*1)".  (Note: I put in parentheses to make sure the reader understands that 5*2 is separate from 5*1.  5*2-5*1 is confusing: you might not know what to do first!)

So, "(5*2)-(5*1)" can be your answer, OR you can simplify it further by actually doing the multiplication: "10-5".  If you want the answer, just subtract--the expression is equal to 5.

Answer: "<span>(5*2)-(5*1)" OR "10-5" OR "5"</span>
3 0
4 years ago
A book is on sale for $6 off of the regular $24 price. What percent is the discount? [Type your answer as a number.]
sattari [20]

Answer:

14.4

Step-by-step explanation:

You only move one space to the left since it is only one place to the lest with the decimal number .6

*Hope this helps*

8 0
3 years ago
Read 2 more answers
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