Answer:

Step-by-step explanation:
Given

Required
Solve
We have:

Add 8 to both sides

Take square roots of both sides

Expand

This gives:

Split

Total number of marbles=5+3+4=12
Probability of picking a red marble =5/12
Answer:
angle CAB=37° angle ABC=82°
Answer:
Step-by-step explanation:
You take the starting year of 1990 and subtract it from 1999 to get the year span of 9,
You then take the amount per year the population goes up by which is 300, so 300 multiplied by 9 is 2,700
You add 2,700 to 21,152 to get B-23,852
Answer:
x = 76.9
Step-by-step explanation:
Since this is a right triangle, we can use trig functions
tan theta = opp side / adj side
tan 70 = x/28
28 tan 70 = x
x=76.92936
Rounding to the nearest tenth
x = 76.9