Step-by-step explanation:
8x2 + 16x + 3 = 0
a is 8 b is 16 c is 3
multiply 8 and 3 = 24
what 2 numbers when multiplied make 24 and when added make 16?
use quadratic formula
a is 8 b is 16 c is 3
x= (-b +- (√b^2-4ac))/2a
x= (-16 +- (√b^2-4(8)(3)))/2(8)
x= (-16 +- (√16^2-96))/16
x= (-16 +- (√256-96))/16
x= (-16 +- (√160))/16
x= (-16 +- (4√10))/16
x= -1 +- (√10/4)
split up the + and -
x= -1 - √10/4 = -0.209431
x= -1 + √10/4 = -1.79057
Answer:
-12
Step-by-step explanation:
x/4 - 5= -8
Add 5 to each side
x/4 -5+5 = -8+5
x/4 = -3
Multiply each side by 4
x/4*4 = -3*4
x = -12
Answer:
1490 is the correct answer
Step-by-step explanation:
2070- 580= 1490
You know the number has to be divisible by 11. You also know the number is between 100 and 200.
You can list the multiples of 11 in this interval.
110, 121, 132...
You have your answer. The total price is 132 dollars, and the missing digit is 3.
