Question

Efectuati:
a)7,16+3,47=
b)9,52+3=
c)17,25-5,4=
d)7,72-15=
e)4,625×10²
f)1,46×1,3=
g)17÷5=
h)192,2÷10²=
i)15,4÷6=
j)3,25÷0,5=
k)m a(4,2;6,5;2;9,3)=?

m a(x;4,3)=5,x=?
m a(2,7;1,5;x)=2,7,x=?
VA ROG DAU COROANA!!​

Answer 1

Răspuns:

a)7,16+3,47=10,63

b)9,52+3=12,52

c)17,25-5,4=11,85

d)7,72-15= -7,28

e)4,625×10²=462500

f)1,46×1,3=1,898

g)17÷5=3,4

h)192,2÷10²=1,922

i)15,4÷6=2,56

j)3,25÷0,5=6,5

k)m a(4,2;6,5;2;9,3)=?

Ma=(4,2+6,5+2+9,3)/4

Ma=5,5

m a(x;4,3)=5,x=?

(x+4,3)/2=5

x+4,3=5·2

x=10-4,3=>x=5,7

m a(2,7;1,5;x)=2,7,x=?

(2,7+1,5+x)/3=2,7

4,2+x=2,7·3

x=8,1-4,2=>x=3,9

Answer 2

Răspuns:

Explicație pas cu pas: