Step-by-step explanation:
![2x - 5 = x + 5 \\ 2x - x = 5 + 5 \\ x = 10](https://tex.z-dn.net/?f=2x%20-%205%20%3D%20x%20%2B%205%20%5C%5C%202x%20-%20x%20%3D%205%20%2B%205%20%5C%5C%20x%20%3D%20%2010)
Answer:
Step-by-step explanation:
v = πr²h = π·2²·3.5 = 14π cm³ ≅ 44 cm³
Answer:
y=5
Step-by-step explanation:
7y-y=6y
30/6 = 6y/6
5 = y
Answer:
The slope of the line is -5/4
Step-by-step explanation:
19) = Solution :-
5x+4y = 20
Let's keep x's value 0,
so
we get,
5x+4y = 20
or, 5×0+4y = 20
or, 4y = 20
so, y = 5
one coordinate we get (0,5)
Again
Let's keep x's value 4,
we get,
5x+4y = 20
or, 5×4+4y = 20
or, 20+4y=20
or, 4y = 0
so, y = 0
Another coordinate, we get (4,0)
now
slope(m) = (y2-y1)/(x2-x1)
= (0-5)/(4-0)
= -5/4
200 meters were swam in (2*60+42=162) seconds.
(200/50=4) laps were swam.
The time per lap was 162/4=40.5 seconds.