Answer:
the opposite Angles sum up to give 180
Step-by-step explanation:
3y +3y = 180
y=30
if y = 30 the x = 55
are you clear?
Answer:
166 2/3π
Step-by-step explanation:
Area: 4πr² = 100π
r² = 25
r = 5
Volume = 4/3 * π * 5³ = 500/3 π = 166 2/3π
Answer:
456
Step-by-step explanation:
Let X be the SATscore scored by the students
Given that X is normal (1000,200)
By converting into standard normal variate we can say that
is N(0,1)
To find the top 10% we consider the 90th percentile for z score
Z 90th percentile = 1.28

i.e. only students who scored 456 or above only should be considered.
Answer:
33/4 or 8 1/4
Step-by-step explanation:
-3 2/3 • (-2 1/4)
Step 1. Convert each into improper fractions
(Reply for details)
-11/3 • (-9/4)
Step 2. Multiply
(Reply for details)
99/12
Step 3. Simplify
(Reply for details)
33/4 or 8 1/4
When a () is right next to a number such as the problem you have it means to multiply. so 77 times -1 equals -77. so i'm not sure why -77 isn't one of your answer choices. maybe you mistyped something?