Is 10000000000, 10 to the power of 10
0.17/30 = x/450 <em>Use proportion</em>
76.50 = 30x <em>Cross multiply</em>
2.55 = x <em>Divide 30 both sides</em>
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7.5 minutes call would cost 2.55
Multiply the bracket by 5
10x+25= 4x-7
10x-4x+25= 4x-4x-7
6x+25= -7
6x+25-25= -7-25
6x= -32
Divide by 6 for 6x and -32
6x/6= -32/6
x= -32/6
divide by 2 for -32/6
x= -16/3
Answer is -16/3 ( improper fraction) or -5 1/3 ( mixed number)
Answer:
π and √2.
Step-by-step explanation:
π and √2 are irrational because they cannot be written in the form a/b where a and b are integers.
Step-by-step explanation:
¹1litre =100cl
5 litres =500cl
0.66cl=y
cross multiply
500÷0.66 =7