Answer:
87.92 or 88 inches(simplified)
Step-by-step explanation:
circumference = 2 Pi R R= 1/2 diamater
ribbon = circumference
ribbon = 2x3.14x14 = 87.92 inches
Answer:
5.39
Step-by-step explanation:
you can use the Pythagoras therom to find the answer. Pythagoras therom states that a^2+b^2=c^2 substitute a for 5 and b for 2 and you get 30. Now, find the square root of 30 which is approximately 5.39 Hope this helps!
I'm pretty sure that the answer is B.
Answer:
y=6x-90
Step-by-step explanation:
two points are (0,-90) and (20,30)
slope=(30-(-90))/(20-0)=120/20=6
eq. of line is y-y1=m(x-x1)
y-(-90)=6(x-0)
y=6x-90
Unsure about 4a
4.b) f(x) = 2x2, g(x) = 3x-1
(i) f(3) = 2(3)2 = 2(9) = 18
(ii) g(1) = 3(1)-1 = 3-1 = 2
(iii) g(1/3) = 3(1/3)-1 = 1-1 = 0
(iv) f(3) = kg(1)
18 = 2k, k = 18/2 = 9, k = 9
c) f(x) = 10-3x-x2
C is the point which crosses the y-axis, known as the y-intercept. It's found by plugging 0 in for x: f(0) = 10-3(0) -02 = 10-0-0 = 10
A and B are the x-intercepts, aka solutions or "zeros." These are found by solving for f(x) = 0, factoring the quadratic:
B: -x+2=0, -x+2-2=0-2
-x = -2, x = 2
B: (2, 0)
A: x+5=0, x+5-5=0-5
x = -5
A: (-5, 0)