8 1/2
1 1/2•15 =45/2 =22 1/2+15=37 1/2+15=52 1/2
60-52 1/2= 8 1/2 minutes
Answer:
x = 10/7 or x = -10/7
Step-by-step explanation:
By using the completing the squares method, we have to divide the coefficient of the x term by 2, square it and add to both sides
From what we have here, the coefficient of the x term is 0
Thus, we have it that;
0 = 100 - 49x^2
We can proceed to use the difference of two squares here;
Whereby;
a^2 - b^2 = (a-b)(a + b)
0 = (10-7x)(10+7x)
10 - 7x = 0 or 10 + 7x = 0
7x = 10 or 7x = -10
x = 10/7 or x = -10/7
Contains 5 buttons...
picks one, then replaces. then picks another
since he puts the button back, the sample size remains the same as when he picked the 1st one....and that sample size is 5
if 1 button is added, and he uses the same process and replaces the button he picked, then the sample size will be 6....because 1 button was added making a total of 6 buttons.
<u>the acceleration of the object=5m/s².</u>
Answer:
Solution given:
Force[f]=32N
acceleration [a]=4m/s²
we have
F=ma
mass[m]=32/4=8kg
now
we have
mass[m]=8kg
force [F]=40N
acceleration [a]=?
we have
F=ma
40=8a
a=40/8
a=5m/s²
