Answer:
Required number is 4.
Step-by-step explanation:
Let the required number be a.
Given,
Sum of ten times the integer and seven times it’s square is 152.
= > Ten times of a + seven times of it's square = 152
= > 10( a ) + 7( a )^2 = 152
= > 10a + 7a^2 - 152 = 0
= > 7a^2 + 10a - 152 = 0
= > 7a^2 + ( 38 - 28 )a - 152 = 0
= > 7a^2 + 38a - 28a - 152 = 0
= > a( 7a + 38 ) - 4( 7a + 38 ) = 0
= > ( a - 4 )( 7a + 38 ) = 0
= > a = 4 or - 38 / 7
Hence the required number is 4.
Answer:
h = 24 ft
Step-by-step explanation:
A = 936 ft^2, b = 39 ft.
A = bh
Divide both sides by b:
h = A/b = 936 ft / 39 ft = 24 ft
Well there is 24 hours in a day so 24 - 15 = 9. So he spends 9 hours awake.
Answer:
3
Step-by-step explanation:
Just c cuz i smart
