Answer:
13
Step-by-step explanation:
using c^2 = a^2 + b^2
whereas c is the length of the ladder
a is the top of the ladder
b is the distance from building
so c^2 = 12^2 + 5^2 = 144 + 25 = 169
c = 13
Answer:
2. (X) = -7x +8
3. (V)= -1
5. (g) = -4g+28
6. (M) = 8
Step-by-step explanation:
Answer:
discount price = 0.75p
Step-by-step explanation:
100%-25% = 75% or 0.75
Answer:
20. 4n+5+8n-5=180(linear pair)
12n=180
n=15
21. 9x-6=8.5x+2(can be seen from image)
9x-8.5x=2+6
0.5x=8
x=8/0.5
x=80/5
x=16
22. 4z+3z+6=90°(Complementary)
7z+6=90°
7z=84°
z=12°
2n+5...a couple is two people so you need to multiply the number of couples, n, by 2 to get the total number of dancers. Then add the total number of organizers.
