Question

dau coroana rapid va rog​

Answer 1

1. a)21+14:7=21+2=23
b)102
c)x:7=16 r 5
x=16•7+5
x=112+5
x=117

2 a). x+y=13
z=8
xz+yz=z(x+y)=8•13=104
b)2³²:2³⁰=2²=4
c)1/4+3/8=2/8+3/8=5/8

3. L=8 cm
l=8-2=6 cm
A) 8/6=3/2=1.5
B) P(perimetrul)=2L+2l
P=2•8+2•6=16+12=28 cm
l/P=6/28=3/14
c)P/L=28/8=14/4=7/2=3.5

Sper ca te-am ajutat! :*

Answer 2

Răspuns:

1.

a)21+2=23

b)123

c)x:7=16 rest 5

x=16×7+5

x=117

2.

a) x+y=13

z=8

xz+yz=

z×(x+y)=

8×13=104

b) $2 {}^{32} \div 2 {}^{30} \\ 2 {}^{2} egal \: 4$

c) $\frac{1}{4} {}^{2} + \frac{3}{8} {}^{} \\ \frac{2}{8} + \frac{3}{8} \\ \frac{5}{8}$

3.

a)L=8; l=6

a)$\frac{8}{6}$

b)$\frac{6}{28}$

c)$\frac{28}{8}$