Answer:
n=4
Step-by-step explanation:
First use distributive property to expand -10(n-2)
-5n-20=-20-10n+20
Simplify
-5n-20=-10n
Combine Like Terms
-20=-5n
Divide both sides by -5 to isolate "n"
n=4
Answer:
Q6. D
Q8. A
Step-by-step explanation:
Q6. In 40 trials, he flipped '2 heads and 1 tail' 16 times.
For 2 heads, probability= 16/40= 4/10
For 120 trials, number of times= 4/10 × 120= 48
Q8.
Answer is A because the inequality shows that x is equal or greater than 8 so the dot at 8 has to be coloured.
Note that we do not change the inequality sign unless we are dividing the whole thing by -1.