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Montano1993 [528]
3 years ago
10

Please answer this correctly

Mathematics
1 answer:
Svetlanka [38]3 years ago
4 0

Answer:

40 exhibits dose the aquarium have.

Second model represent the problem.

Step-by-step explanation:

let number of exhibits dose the aquarium have = x

According to given condition;

90% of x = 36

(90/100) x = 36

x = (36×100)/90

x = 40

40 exhibits dose the aquarium have.

Second model represent the problem.

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A store is having a sale on jelly beans and trail mix. For 3 pounds of jelly beans and 2 pounds of trail mix, the total cost is
Nata [24]

the cost for each of jelly beans and each pound of trail mix is $2.5 and $1.75

<u>Step-by-step explanation:</u>

Given A store is having a sale on jelly beans and trail mix. For 3 pounds of jelly beans and 2 pounds of trail mix, the total cost is $11. For 5 pounds of jelly beans and 6 pounds of trail mix, the total cost is $23 . We have to find the cost for each pound of trail mix and each pound of jelly beans.

Let the cost of each pound of trail mix is $y.

and  the cost of each pound of jelly beans is $x.

According to question,

For   3 pounds of jelly beans and 2 pounds of trail mix, the total cost is $11.

⇒ 3x+2y=11  →  (1)

For 5 pounds of jelly beans and 6 pounds of trail mix, the total cost is $23

⇒ 5x+6y=23 →  (2)

Solving (1) and (2), we get

3(1 equation)-(2 equation)=0

⇒3(3x+2y)-5x-6y=3(11)-23

⇒9x+6y-5x-6y=10

hence,

⇒4x=10

⇒x=2.5

Putting x=2.5 in  3x+2y=11  we get ;

⇒  3x+2y=11

⇒  3(2.5)+2y=11

⇒  2y=11-7.5=3.5

⇒  y=1.75

Hence, the cost for each of jelly beans and each pound of trail mix is $2.5 and $1.75 .

6 0
3 years ago
To which set of numbers does -1/4 belong to?
inna [77]
Real numbers and rational numbers
7 0
3 years ago
Help plz ASAP
Aleks [24]

Answer:

B.

Step-by-step explanation:

3 0
3 years ago
A tv programme begins at 7:45 and ends 50 minutes later what time does it finish
faust18 [17]

Answer:

8:35

Step-by-step explanation:

7:45 + 50minutes=

8:35

7 0
3 years ago
Read 2 more answers
If the markup rate is 50%, then the cost of a shirt that regularly sells for $60 is $40. true or false?​
Natasha2012 [34]

Answer:

false

Step-by-step explanation:

half of 60 dollars is 30

think of it as half of 6

5 0
3 years ago
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