Answer:
Step-by-step explanation:
set 30
1) 90-52 = x
38 = x
2) 90 -15-25=x
50 = x
set 31
1) t = 3m
m = independent
t = dependent
m t
![\left[\begin{array}{ccc}1 & 3\\2 & 6\\3 & 9\\4&12\\5&15\\6&18\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%20%26%203%5C%5C2%20%26%206%5C%5C3%20%26%209%5C%5C4%2612%5C%5C5%2615%5C%5C6%2618%5Cend%7Barray%7D%5Cright%5D)
2)
m = 25d
d = independent
m = dependent
m d
![\left[\begin{array}{ccc}1&25\\2&50\\3&75\\4&100\\5&125\\6&150\\7&175\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%2625%5C%5C2%2650%5C%5C3%2675%5C%5C4%26100%5C%5C5%26125%5C%5C6%26150%5C%5C7%26175%5Cend%7Barray%7D%5Cright%5D)
8.5cm · 250,000 = 2,125,000cm
1m = 100cm therefore 1cm = 0.01m
2,125,000cm = 2,125,000 · 0.01 = 21,250m
1km = 1,000m therefore 1m = 0.001km
21,250m = 21,250 · 0.001km = 21.25km
Answer: 21,250m = 21,25km
Answer:
=6√3 the third option.
Step-by-step explanation:
We can use the Pythagoras theorem to find the value of y. We need two equations that include y.
a²+b²=c²
c=9+3=12
x²+y²=12²
x²=144 - y².........i (This is the first equation)
We can also express it in another way but let us find the perpendicular dropped to c.
perpendicular²= x²-3²=x²-9 according to the Pythagoras theorem.
y²=(x²-9)+9²
y²=x²+72
x²=y²-72....ii( this is the second equation
Let us equate the two.
y²-72=144-y²
2y²=144+72
2y²=216
y²=108
y=√108
In Surd form √108=√(36×3)=6√3
y=6√3
