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guajiro [1.7K]
3 years ago
13

Rezolvati problema prin metoda figurativa:

Mathematics
1 answer:
Anna35 [415]3 years ago
5 0

Ne este dat numărul total de elevi = 30.

Să presupunem că numărul de băieți este egal cu numărul de fete.

Dacă împărțim 30 cu 2, obținem 15.

Deci, numărul de băieți = 15 și numărul de fete = 15 dacă ambele sunt egale.

"Dar numărul de fete este mai mult de 2 băieți."

Astfel putem scădea 1 din 15 și adăugăm 1 din 15.

După adăugarea a 1 din 15, ajungem

15 + 1 = 16.

Și scăzând de la 1 la 15, ajungem acolo

15-1 = 14.

Deci, numărul de băieți este de 14 și numărul de fete este de 16

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Answer:

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Using the quadratic equation(for equation 2),

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3 years ago
A table of equivalent ratios is given.<br><br> What is the missing number in the table?
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Look at this system of equations.<br> 2x +5 =9.5<br> 3x + 5y =10.5<br> What is the value of x+y
stiv31 [10]

Answer:

x = 2.25 y = 0.75

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know we now what is x so in the second one we evaluate x

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90. 

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