Answer:
The beam should be placed 8 feet from the center.
Step-by-step explanation:
The struts are y = √(x + 8) and y = √(x − 4). The struts are 2 feet apart at the location of the beam:
√(x + 8) − √(x − 4) = 2
Solving:
√(x + 8) = 2 + √(x − 4)
x + 8 = 4 + 4√(x − 4) + x − 4
8 = 4√(x − 4)
2 = √(x − 4)
x − 4 = 4
x = 8
Answer:
The E+ on the calculator means x10^.
Step-by-step explanation:
So, when we input that instead, we get the scientific notation of:
3.456x10^14
If we want this in standard notation, we simply move the decimal place 14 times to the right.
345,600,000,000,000
Answer:
y = 3x-7
Step-by-step explanation:
Lines that are parallel have the same slopes.
y = 3x-4 ---> y=mx+b (slope = m=3)
point-slope formula for a line: y - y1 = m(x-x1)
slope=m=3
(3,2)----> (x1,y1)
y - 2 = 3(x-3)
y - 2 = 3x-9
y = 3x-7
Answer:
C
Step-by-step explanation:
2x + y =7 (1)
3x-y=8 (2)
(1) + (2)
5x = 15
x = 3
