Why are the equations w - x + x = w and w + x - x = w called identities?

Answers

Answer 1

Answer: They are indentical because the only thing that switched was the addition sign, and subtraction sign. If you look closely.

Answer 2

Answer: Identities have the same solution, and they are also called 'infinities'. That is because they include many solutions.

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• Machine s is cleaned every 12 weeks. •Machine that is cleaned every 8 weeks. What is the fewest number of weeks that will pass before both machines are cleaned again in the same week?

Answers

Week 24,assuming that both machines are cleaned at week 0, because multiples of 12 are 12, 24,36. And multiples of 8 are 8, 16, 24. 24 is also the LCM.

Answer:

Week 24,assuming that both machines are cleaned at week 0, because multiples of 12 are 12, 24,36. And multiples of 8 are 8, 16, 24. 24 is also the LCM.

Step-by-step explanation:

i say with that person

Help PleaSe Which function has the greatest rate of change?

A.
x y
3 3
4 6
5 9

B.
y = 4x – 7

C.
12x + 6y = 18
D.
Graph is for "D"

Answers

for A is 3 3
the second one is 4
the third one is -2
and the fourth is -5
so the second one is the greatest 4

23% of 75 is what number

Answers

23% of 75 is 17.25

Use 75*0.23=

Simplify the expression.

3n - 5 + 2n + 4

Answers

3n−5+2n+4=3n+−5+2n+4Combine Like Terms:=3n+−5+2n+4=(3n+2n)+(−5+4)=5n+−1Answer:=5n−1

Solve 3 - x/2 > 12
A: x<-18
B: x>-30
C: x>-18
D: x<-30

Answers

Answer:

answer is A: x<-18

Step-by-step explanation:

3-x/2>12

multiply both sides by 2

6-x>24

move constant to right

-x>24-6

subtract numbers

-x>18

change the signs

x<-18

Kiersten runs a website that helps people learn programming. Every month, Kiersten receives a subscription fee of $10 from each of the subscribers to her website. Last month, the website had 100 subscribers. This month, 30 new members joined the website, and 10 members cancelled their subscription

Answers

Answer:

Last month's income: $1000

This month's income = $1200

Step-by-step explanation:

Number of subscribers for last month = 100

Fee per subscriber = $10

Sol, last month's income = 100(10) = 1000

This month, 30 new members joined and 10 of the existing members cancelled their subscription.

So, number of subscribers this month = 100 + 30 - 10 = 120

This month's income = 120(10) = 1200

Last month, Kiersten earned $1000 (wow that's a lot of money :3) and this month, she earned $1200.

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