Answer:
78.42
Step-by-step explanation:
Area of 360 - 80 degree region.
You need to find out the region of the major arc where the circle is almost complete. The area left over will be calculated later
Angle = 360 -80
Angle = 280 degrees.
Area = 
Area = 
Area = 23800/360
Area = 66.11
Area of the Triangle with sides of 5 cm each
Here's where I get into a bit of trouble. I have to assume you know some trig.
Find the height
Cos(40) = The height / the hypotenuse
Cos(40) = h/5
0.7760 = h/5
h = 0.7760*5
h = 3.830
Find 1/2 the base (the chord of the circle)
Sin(40) = 1/2 base / hypotenuse
Sin(40) = 1/2 b / 5 Multiply both sides by 5
1/2 b = 5*sin(40) Find the sin(40)
1/2 b = 5*.6428 Combine the right
1/2 b = 3.139 multiply by 2
b = 6.4278
Find the area of the triangle
Area = 1/2 b * h
b = 6.4278
h = 3.830
Area = 1/2 * 6.4278*3.830
Area = 12.31 cm^2
Total Area
12.31 + 66.11 = 78.42
Answer:
The spinner is 4 times more likely to land on black.
Step-by-step explanation:
There were 72 black spins compared to 18 white spins. This means there were 4 times more black spins than white spins; this means the spinner is not equally likely to land on either color.
Answer:
Jk
Step-by-step explanation:
Answer:
<u>aₙ = aₙ₋₁ + 4</u>
Step-by-step explanation:
Finding the common difference (d) :
- d = f(2) - f(1)
- d = 7 - 3
- d = 4
Hence, the recursive formula :
First you find 2 points so (-7,-2) and (-9,2) find the slope by starting from the LEFT point and go down so it is equal level to the right point. Once you do that count to the right and get that number to get the slope in this case it is 2/4x or 1/2x no find the y intercept which is where in meets the y axis which is -8 now you have the answer y= 1/2x + -8 make sure to use the formula y= Mx + b to make it easier. Hope this helped!