Answer:
it should be 47
Step-by-step explanation:
To find the solutions to this equation, we can apply the quadratic formula. This quadratic formula solves equations of the form ax^2 + bx + c = 0
x = [ -b ± √(b^2 - 4ac) ] / (2a)
x = [ -8 ± √((8)^2 - 4(2)(3)) ] / ( 2(2) )
x = [-8 ± √(64 - (24) ) ] / ( 4 )
x = [-8 ± √(40) ] / ( 4)
x = [-8 ± 2*sqrt(10) ] / ( 4 )
x = -2 ± sqrt(10)/2
The answers are -2 + sqrt(10)/2 and -2 - sqrt(10)/2.
Answer:
200
Step-by-step explanation:
100 plus 100 equals 200
4/50
Multiply that by 2 to get you denominator to 100.
8/100
Then your percentage would be 8%
Answer:
y= -3
Step-by-step explanation:
(-7/2)y =21/2
Divide both sides by (-7/2) = Multiply by (-2/7)
On the left side ,after cancellation you have only y
On the right side you multiply 21/2 by (-2/7)
y= (21*-2) / 2*7
y=(-42)/14
y=(-21)/7
y=- 3
check:
-(7/2) of- 3 is 10.5 21/2=10.5