Question

va rog mult dau coroana îmi trebuie urgent ​

Answer 1

Răspuns:

4.

$\frac{a}{3} = \frac{5}{b}$

inseamna ca a×b=5×3

ab=15 => 4ab=15×4=60

5.

$\frac{12}{a} = \frac{b}{3}$

inseamna ca a×b=12×3

ab=36

a) 37-ab=37-36=1

b)a²×b²-200=36²-200= 1296-200=1096

6.

$\frac{a}{b} = \frac{c}{d}$

inseamna ca ad=cb

ab=cd rezulta ca

$\frac{bc}{ad} = 1$

rezulta

$10 - \frac{bc}{ad } = 10 - 1 = 9$

SPER CA AI INTELES:)