Question

Alguém saiba responder essas questão

Answer 1

Resposta: A) X=18  B) Y =1,6    C) W=6  D) X = 0,83...

Explicação passo a passo:

A) $\frac{6}{8} =\frac{x}{24}$      /      B)$\frac{Y}{7}=\frac{8}{35}$       /       C)$\frac{1,7}{W} =\frac{2,55}{9}$         /     D) $\frac{9,66}{3,5} =\frac{2,3}{X}$

6.24 = X.8     /      8.7=Y.35      /        1,7 .9= W. 2,55  /     3,5 . 2,3 = 9,66.X

144=X.8         /      56=Y.35      /        15,3=W. 2,55     /     8.05=9,66.X

$\frac{144}{8} =X$          /      $\frac{56}{35} =Y$         /         $\frac{15,3}{2,55} =W$            /    $\frac{8,55}{9,66} =X$

18= X             /      1,6=Y           /        6=W                    /    X=0,83...

USEI A MULTIPLICAÇÃO CRUZADA

. = X (MULTIPLICAÇÃO)

Answer 2

Resposta:

$4y/3=2y/4-6+1\\4y/3=2y/4-5\\4y/3=y/2+2.(-5)/2\\4y/3=y+2.(-5)/2\\4y/3=y-10/2\\6.4y/3=6.y-10/2\\2.4y=3(y-10)\\8y=3(y-10\\8y=3y-30\\8y-3y=3y-30-3y\\5y=-30\\y=-6$

a)

$24.6/8=24.x/24\\144/8=24x/24\\18=x\\x=18$

b)

$35.y/7=35.8/35\\35y/7=280/35\\5y=8\\y=8/5 = > 1,6$

c)

$1,7/w=0,28\\w.1,7/w=w.0,28\\1,7=w.0,28\\1,7=0,28w\\1,7/0,28=0,28w/0,28\\w=1,7/0,28\\w=6$

d)

$2,76=2,3/x\\x.2,76=x.2,3/x\\2,76x=2,3\\2,76x/2,76=2,3/2,76\\x=2,3/2,76\\x=0,83$