Hello :
by identity : (a-b)² = a² +b² -2ab
(x√7-3√8)(x√7-3√8) = (x√7-3√8)² = (x√7)²+(3√8)² -2(x√7)(3√8)
=7x²+72 -6x√56
= 7x²+72-6x√(14×4)
= 7x²+72-12x√(14).because :√(14×4)=2√14
Answer B
4600(.83)^x
4600(.83)^ 7 (7 is years from 16 to 23)
=approx 1248
Answer:
16 baseball cards
Step-by-step explanation:
Since Ryan has 48 baseball cards
If he gives 2/6 of his 48 baseball cards to Max
= 2/6 × 48
= 16
It means that Ryan gives 16 of his baseball cards to Max
Substitute the given information into the formula and do the arithmetic.
5(86 -32)/9 = 5(54/9) = 5(6) = 30
The temperature was 30 °C.
