So you want to solve for x?
It would be nice if this would easily factor:
(-4x + 5)(2x +1) = 0 This will not work!
So you need to use the quadratic formula:
a = -8, b = 4, c = 5

x = (-4 +/-

)/2(-8)
= (-4 +/-

)/-16
= (-4 +

)/-16
= 1/4 -

/4
Answer:
pi4
Step-by-step explanation: Formula is piD, diamter is 4, so pi4 which equals 12.56
Answer:
Step-by-step explanation:
Given in the data set as
26, 34, 38, 49, 65, 76, 81
Sum = 369
No of entries = 7
Mean =52.71
When 1213 is included
New sum = 1582
No of entries =8
New mean = 197.75
Thus mean increases by 145.04
Answer:
Sandwich Hut
Step-by-step explanation:
Benny's Sandwiches : 4 sandwiches for $5 = $1.25 for each sandwich
ABC Sandwiches Inc. : 2 sandwiches for $3 = $1.5 for each sandwich
Sandwich Hut : 1 Sandwich for $2 + Buy one, get 1 for free = $1 for each sandwich
When we check the prices for per sandwich it is clear Sandwich Hut gives the best deal.