Answer:
A triangle's total is 180 degrees. 90 is a right angle. 20 is the angle for A. That would mean the value of 90+20=110. 180-110=70 B is 70
Answer:
x=39/2
Step-by-step explanation:
2x-3=36
+3 +3
2x=39
/2 /2
x=39/2
Let x be the money distributed to the first group and y be the money distributed to the second group.
Then, x + y = 1000
Let c be the money distributed to one child in the first group and b be the money distributed to one brother in the second group.
Then, x = 5c and y = 2b
Hence 5c + 2b = 1000.
Answer:
-5≤x <1
Step-by-step explanation:
sqrt( x+5) / sqrt(1-x)
The numerator must be greater than zero since it is a square root
sqrt(x+5) ≥0
Square each side
x+5≥0
x≥-5
The denominator must be greater than zero (the denominator cannot be zero)
sqrt(1-x)> 0
Square each side
1-x > 0
1>x
Putting these together
-5≤x <1
