Step-by-step explanation:
x² + 2x - 63 = 0
(x+9)(x-7)=0
x=-9 x=7
Answer:
Step-by-step explanation:
1/2 x because it is always positive and gives half the value of x
Answer:
2 and 10
Step-by-step explanation:
Let x be length of the small piece and y the length of the big one.
● y = 5x
Since the big piece is 5 times longer than the short one.
The total length is 12 ft
● y + x = 12
● 5x + x = 12
● 6x = 12
Divide both sides by 6
● 6x/6 = 12/6
● x = 2
So the length of the two pieces are 2 ft and 10 ft (5×2)
Answer:
About 28.27.
Step-by-step explanation:
To figure out the area of the base, you just use the formula to find the area of a circle. Which is;
A = r^2 * pi
(r stands for radius)
Answer:
128 degrees
Step-by-step explanation:
B = D
B = 128
Therefore, D = 128
