Step-by-step explanation:
this is how you solve it :)
Answer:
Step-by-step explanation:
Hi,
let's note the two integers a and b
We are asked to find b
<em>replace a in the first equation</em>
As b must be a positive integer, the solution is 11
Hope this helps
10(1 + 4a) - 7a = -6a + 5(1 + 8a)
10 + 40a - 7a = -6a + 5 + 40a
-40. -40
10 - 7a = -6a + 5
-7a + 6a = 5 - 10
-a = -5
5 = a
A ) v = v o + g t
h = v o * t + g t² /2
10 m = 9.81 m/s² * t² / 2
9.81 t² = 20
t² = 2.038
t = 1.4278 s
v = 0 + 9.81 * 1.4278
v = 14 m/s
b ) v o = 14 m/s
v = v o² + 2 a d
0 = 14² + 2 a * 2.9
196 = - 5.9 a
a = 196 : ( - 5.9 )
a = - 33.79 m/s² ( the magnitude of his acceleration while in water )
c ) The total amount of force exerted on the swimmer in water:
F = m * a = 65 kg * 33.76 m/s²
F = 2,196.55 N
The answer to 7(-3)-6 is -27