MATHEMATICS MIDDLE SCHOOL

En un avion viajan 120 personas de las cuales 2/3 de ellas no beben
4/5 de ellas no fuman
72 no fuman ni beben
¿cuantas personas fuman y beben?

Answers

Answer 1
Answer: 2/3(120) = 240/3 = 80 do not drink
4/5(120) = 480/5 = 96 do not smoke
72 do not smoke or drink

96 - 72 = 24 do not smoke
80 - 72 = 8 do not drink
72 do not do either

120 - (24 + 8 + 72) = 120 - 104 = 16 drink and smoke

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on call 3.5 hour $10 talk time 1/2 hour $1.25 what is the unit rate in dollar per hour for each company

Answers

48. On call = 3.5 hours for 10 dollars=> ½ hour for 1.25 dollars.Now, let’s solve the unit rate for each companyfirst = 3.5 hour / 10 dollars=> 10 / 3.5=> Unit rate is 2.9 dollars/hrSecond company = ½ hour for 1.25 dollars=> 1.25 / .5=> 0.25 dollars / hr.Thus, the first company pays better than the second one because it pays 2.9 dollars every hour of talk compare to the 2nd one which pays only 0.25 dollars per hr.

2(3x – 5) = 8
What is X?

Answers

multiply 2 x (3x) and 2 x (-5) =8
6x - 10 =8
      +10   +10
cancel the 10
6x + 18
divide both sides by 6
6x/6 = 18/6
x =3

PLEASE HELP I GIVE THANKS

Answers

A, C, And D

Could be these answers...

suppose you invest 2500 in an account paying 7.25% interest compounded annually find the balance after six years then after 25 years

Answers

y=2500(1+7.25%)^6 makes $3804.73
y=2500(1+7.25%)^25 makes $14383.76

If a bisector of ∠P is constructed, what is the result?two 80º angles


two 90º angles


two 40º angles


two 20º angles

Answers

Answer:

two 20º angles

Hope this helps

The students in Naomi's class sold calendars for a fund-raiser this year and last year. This year, the selling price of each calendar was 13.25. The price this year represents 6% more than the selling price of each calendar last year. What was the selling price of each calendar last year ?

Answers

We'll use the variable x to represent last year's price. First, we have to set up an equation:
.06x+x=13.25
We get this equation because $13.25 is 6% MORE than last year's price, meaning we need to add the original price to the increase. Next, we combine like terms and solve for x:
.06x+x=13.25 \n 1.06x=13.25 \n (1.06x)/(1.06) = (13.25)/(1.06) \n x= 12.50

Last year's price was $12.50. 

Hope this helps!
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