Answer:
The answer is C) 4 m/s
Step-by-step explanation:
The average speed between 5s and 10s is 4 m /s
because
Between 5s and 10s the body reached 30m
so Distance traveled : 30m - 10m =20m
And the Speed is : distance/time = 20m/5m = 4m/3
Hope this helps!
A way to figure the decimal is by dividing. so the denominator divided by the numerator so 6 divided by 1 which is ..1666666666 and so on. You round the .16666666 to .17 and you keep the whole number the same so the answer is 3.17
Add 3 to both sides so that the equation becomes -2x^2 + 5x + 5 = 0.
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 = [ -5 ± √(5^2 - 4(-2)(5)) ] / ( 2(-2) )
x = [-5 ± √(25 - (-40) ) ] / ( -4 )
x = [-5 ± √(65) ] / ( -4)
x = [-5 ± sqrt(65) ] / ( -4 )
x = 5/4 ± -sqrt(65)/4
The answers are 5/4 + sqrt(65)/4 and 5/4 - sqrt(65)/4..