False, because it's equal to 2 × first term × last term
Answer:
-2
Step-by-step explanation:
10/-5= -2
Negative times a negative equals to a positive: -2 x -5 = 10
We have 2 equations here ( b = cost of bush and t = cost of a tree)
10b + 4t = 246........................................................(1)
5b + 3t = 147 Multiply this equation by -2:-
-10b - 6t = -294.......................................................(2)
Adding equations (1) and (2) we get:-
0 - 2t = - 48
t = -48/-2 = 24
Plug t = 24 into the first equation:-
10b + 4(24) = 246
10b = 246 - 96 = 150
b = 15
The answer is one bush costs $15 and one tree costs $24.
Pythagoras Theorem:
hipotenuse²=side1² +side2²
a=is the longest side of the triangle (hypotenuse)
b and c: are the other two sides.
In this case:
hipotenuse²=side₁² + side₂²
side₁=a=16
side₂=b=28
c²=16²+28²
c²=256+784
c²=1040
c=√1040=32.2490....≈32.25
Answer: D. 32.25
