I would say c because FE is a radius BA i think is a chord and EC isn't even a line
Answer:
8184 vocalists sang in total
Step-by-step explanation:
The number needed is ...
8 + 16 + 32 + 64 + 128 + 256 + 512 + 1024 + 2048 + 4096
You can add these up to get a total of 8184, or you can use the formula for the sum of a geometric series:
Sn = a1(r^n -1)/(r -1) . . . . where a1 is the first term and r is the common ratio
S10 = 8(2^10 -1)/(2 -1) = 8(1024 -1)/1 = 8184
Wouldn't this be $90-$27 which is 63, 63 being the cost of your earrings
Step 1: Find the gradient/slope
Gradient and slope are interchangeable words. To find the gradient/slope we need to use two points that we know are on the line and the following formula: (y2 - y1) / (x2 - x1)
Point 1 = (0,1)
Point 2 = (3,13)
Gradient = (13 - 1) / (3 - 0)
Gradient = 12 / 3
Gradient = 4
Step 2: Find the y-intercept
We can use the slope-intercept form to find the y-intercept. To do so, we plug in the gradient and one of the points on the line. You can pick either point to plug in here!
Slope-intercept form: y = mx + b
-m is the gradient
-b is the y-intercept (that we are trying to find)
13 = 4(3) + b
13 = 12 + b
b = 1
Step 3: Put it all together in slope-intercept form
Now that we have the slope and y-intercept, all that's left to do is plug in the values.
y = mx + b
y = 4x + 1
Answer: y = 4x + 1
Hope this helps!!
