Hint:
Diameter(d)= 2 radius(r)
circumference= 2πr= πd
1. diameter= 19 × 2 = 38 inches
circumference= 3.18(38) = 119 inches (3 s.f.)
Note that I use 3.18 instead of π because the question states to use 3.14 for π.
Likewise, if you are given the diameter, divide it by 2 to find radius. Let's try a question which only gives you the diameter.
4. radius= 22 ÷ 2 = 11cm
circumference= 3.14(22) = 69.1cm (3 s.f.)
Answer:

Explanation:
Slope-intercept form formula:

For this formula we need the slope to find the slope use the slope formula:

Plug in the two points (1,-3) and (3,1)

=2
the slope is 2
Now use the slope-interpect formula and plug in the slope (m)

plug in one point I'll use (3,1)

1 = 6 +b
1-6=6-6+b
-5 = b
The equation would be:
Step-by-step explanation:
Step-by-step explanation: Given the expression sin(11pi/2 +x) =-1/2. Take the arcsin of both sides. sin⁻¹[sin(11pi/2 +x)]
Answer:
7.2+0.8w
Step-by-step explanation:
Add the constants to get 7.2
sub variables to get 0.8w
Answer: this is the answer 12.
Step-by-step explanation: