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3 years ago

Error analysis: describe and correct the error in solving the equation.

Mathematics

1 answer:

maw [93]3 years ago

8 0

The only solution of the equation is x=0

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Find the mean absolute deviation of the set of data 3,8,10,12,15

inn [45]

Answer:

3.28

Step-by-step explanation:

find the mean of all the numbers

3 + 8 + 10 + 12 + 15 = 48

48/5=9.6

so the mean of all the numbers is 9.6

now subtract 9.6 from all the numbers

|3 - 9.6| = 6.6

|8 - 9.6| = 1.6

|10 - 9.6| = .4

|12 - 9.6| = 2.4

|15 - 9.6| = 5.4

Find the mean/average of the new values

6.6 + 1.6 + .4 + 2.4 + 5.4 = 16.4

16.4/5 = 3.28

6 0

4 years ago

Solve both questions please ❤️❤️

harina [27]

Answer:

1. y=7.2

2. x=18

Step-by-step explanation:

1. Triangles CMN and CBA are similar triangles (by AAA postulate). Similar triangles have proportional corresponding sides, so

$\dfrac{CM}{CB}=\dfrac{CN}{CA}\\ \\\dfrac{12}{12+y}=\dfrac{10}{10+6}\\ \\12\cdot 16=10\cdot (12+y)\\ \\192=120+10y\\ \\10y=72\\ \\y=7.2$

2. GK is angle G bisector. Use angle bisector's property:

$\dfrac{GH}{GI}=\dfrac{KH}{KI}\\ \\\dfrac{40}{24}=\dfrac{30}{x}\\ \\40x=24\cdot 30\\ \\4x=24\cdot 3\\ \\x=6\cdot 3=18$

8 0

3 years ago

Find the measure of the missing angles. Help pls

amid [387]

Answer:

Finding b:

57+b = 180 (linear pair)

b = 123

Finding c:

c = 123 (vertical angles are always congruent

7 0

3 years ago

Use the Associative Property of Addition to write an expression equivalent to r+ (h+t). r+ (h+t) = Enter your answer in the answ

svlad2 [7]

Answer:

Associative propertry of addition.

Step-by-step explanation:

The associative property of addition states that:

$a+(b+c) = (a+b)+c$

It states that we can add numbers regardless of the groups. The sum does not change irrespective of how the addends are grouped.

We are given the expression:

$r + (h + t)$

It can be written as:

$(r+h) + t$

It can also be written as:

$r + (h+t) = (r+t) + h = (h+t)+r = h + (t+r)$

Whatever maybe the arrangement of r, h and t, their sum will always be equal. We can regroup them in many ways but the sum remains the same.

4 0

3 years ago

The table shows the blood pressures of 16 clinic patients. What is the interquartile range of the data?

Alex73 [517]

I’ve attached my work below....
I ran out of space so the step 5 the last step is subtract q1 and q3 which step 3 and 4
So 90.9-81.8=9.1

5 0

3 years ago