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galina1969 [7]
3 years ago
12

Help me please i really need it I need solution.​

Mathematics
2 answers:
Strike441 [17]3 years ago
8 0

Answer:

30 are present and 10 are absent

Step-by-step explanation:

75% of 40 is 30

Therefore 30 pupils are present

And 10 pupils are absent

vagabundo [1.1K]3 years ago
3 0

Answer:

Step-by-step explanation:

1. To figure this out, you need to first convert the percentage to a decimal. To do this, you move the decimal two places back. 75.0% -> 0.75

40 * 0.75 = 30 students are present, because 75% of 40 is 30

40 - 30 = 10 students are absent, because 30 students are present.

2. To figure this out, you must do the same thing you did for number 1 above. It would look like this: 80% -> .80

250 * 0.8 = 200 euros - not sure if that's what it is but that is what I'm going with - is what she spent, because 80% of 250 is 200

250 - 200 = 50 is what she saved.

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Jessie has a container that contains 18 3/4 cios of ice cream. How many 1/3-cup servings of ice cream are in the container
ladessa [460]

Hi there!

18 × \frac{3}{4} = amount of ice cream in container

13.5 = amount of ice cream in container


Let's replace the number of cups by "C" :

13.5 = C × \frac{1}{3}

Isoltate "C" by dividing each side of the equation by \frac{1}{3}


40.5 = C


Which means that your answer is : There are 40.5 1/3-cup servings of ice creamin the container!


There you go! I really hope this helped, if there's anything just let me know! :)

7 0
3 years ago
Denise wants to cover a 21.75 square foot wall with weathered wood. If each box of weathered wood contains 1.5 square feet of wo
natka813 [3]

Answer: 15 boxes

Step-by-step explanation:

From the question, we are informed that Denise wants to cover a 21.75 square foot wall with weathered wood and that each box of weathered wood contains 1.5 square feet of wood.

The number of boxes of weathered wood that she need will be calculated by dividing 21.75 square feet by 1.5 square feet. This will be:

= 21.75/1.5

= 14.5

= 15 boxes approximately

6 0
3 years ago
Solve the following system of equations <br> Y= -2x – 3<br> 4y + x =16
Aleksandr-060686 [28]

Answer:

(-4,5)

*View attached graph*

Step-by-step explanation:

y = -2x - 3

4y + x = 16

4y + x = 16

4(-2x - 3) + x = 16

-8x - 12 + x = 16

-7x - 12 = 16

     +12   + 12

-7x = 28

/-7    /-7

x = -4

4y + x = 16

4y + (-4) = 16

4y - 4 = 16

   + 4   + 4

4y = 20

/4     /4

y = 5

(x,y) -> (-4,5)

Hope this helps!

6 0
3 years ago
Suppose that an insect population’s density, in thousands per acre, during year n, can be modeled by the recursive formula: a1 =
alexdok [17]

Answer:

D) The population alternates between increasing and decreasing

Step-by-step explanation:

correct on edge

4 0
2 years ago
Sue's Fruit Stand sells 20 different types of fruits. The table below shows the numbers of fruits that have certain percentages
Ksenya-84 [330]

Answer:

The first histogram is the answer.

Step-by-step explanation:

Like any other questions, you can use the process of elimination to answer this question.

There are only one fruit that has a water content of 60 - 64 %

Right away you can eliminate the second answer choice.

There are two fruits that has a water content of 65 - 69 %

All the other three has the same thing

There are only two fruits that has a water content of 70 to 74 %

Right away answer choice three can be eliminated

There are 4 fruits that are 75 - 79 % full with water

Both has same thing

There are 9 friuts that are 80 - 84 % full with water

THERE ARE 2 FRUITS THAT CONTAIN 85 - 89 % water

THE ANSWER IS THE FIRST HISTOGRAM.

5 0
3 years ago
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