Iwill award brainliest! by how much percent did the temperature change if: 1. at first it increased by 25% and then decreased by 40% 2. at first it decreased by 60% and then increased by 80% 3. at first it increased by 5% and then increased by 20% 4. at first it decreased by 10% and then decreased by 30%

1.it was a 25 percent decrease

2.it was a 28 percent decrease

3.it was a 26 percent increase

4.  it was a 37 percent decrease

Step-by-step explanation:

1.  if it increased by 25 percent

t + .25t = 1.25 t

then decreased by 40 percent  {use 1.25t}

1.25t - .4(1.25t)

1.25t - .5t

.75t

the difference from t to .75 t is  (t-.75 t) is .25 t  or 25 percent

it was a 25 percent decrease

2.  t decreased by 60

t - .6 t = .4 t

then increased by 80 {use .4t}

.4t + .8 (.4t)

.4t+.32t =.72t

the difference from t to .72 t is  (t-.72 t) is .28 t  or 28 percent

it was a 28 percent decrease

3.  t increased by 5 percent

t + .05 t = 1.05 t

then increased by 20 {use 1.05t}

1.05t + .2 (1.05t)

1.05t+.21t =1.26t

the difference from t to .72 t is  (1.26 t-t) is .26 t  or 26 percent increase

it was a 26 percent increase

4.  t decrease by 10 percent

t - .1 t = .9 t

then decreased by .3 {use .9t}

.9t - .3 (.9t)

.9t-.27t =.63t

the difference from t to .72 t is  ( t-.63t) is .37 t  or 37 percent decrease

it was a 37 percent decrease

answer: 12

step-by-step explanation:

it can be to see completed examples before writing, in order to examine what makes for an effective piece. see how these intros give some context before posing the topic and lead naturally into the body paragraphs, where the evidence will be listed. you can imagine how the author has organized the rest of the piece.

"we buried my cousin last summer. he was 32 when he hanged himself from a closet coat rack in the throes of alcoholism, the fourth of my blood relatives to die prematurely from this deadly disease. if america issued drinking licenses, those four men—including my father, who died at 54 of liver failure—might be alive today. that is a good example piece   some steps that are .

. writing something that happened to you

.read a book you like to get ideas from there

. lastly you can make a venn diagram

hope this plz make brainliest

step-by-step explanation: