Answer:
$2.80
Step-by-step explanation:
Divide 2.45 by 7 to get the cost of 1 orange which is $0.35. Multiply that cost by 8 to get the cost of 8 oranges and your final answer which is $2.80.
Number: n
square of number: n^2
sum of n and n^2 is n+n^2=20
Rewriting this equation, we get n^2+n-20=0 = (n+5)(n-4) = 0
Then n+5=0 and n-4=0, so n = -5 and n = 4.
You must check both results. It could happen that both are correct, or that only one is correct.
Vedunejdjwndhje
AND THEN WHAT
Ok so ° = negative
1.0x10°2
_______
8.9x10°6
would be solved like 1x(-10x10)= -100
8.9x(-10x10x10x10x10x10)=
8.9x-1000000=
8900000
and then you do the rest you do the rest