Answer:
y = -1x + 8
Step-by-step explanation:
(1,7)
y = mx + b
7 = -1 × 1 + b
solving for b:
b = 7 - (-1)(1)
b = 8
Therefore,
y = -1x + 8
Answer:
t = 48
Step-by-step explanation:
Answer:
The first answer is D
the second answer is B
Step-by-step explanation:
The reason why the first answer is D is because in the problem it says at least twice as many seniors is travelling compared to the juniors and D is the only one that shows at least twice than as many juniors and it also it true in the equation 230>2y+x
The reason why the second answer is B is because both of the lines touch at the points (-2,1) which is the same points as B
Answer:25sqrt3-25pi/3
Step-by-step explanation:
Assuming the triangle is equilateral, we clearly need to find the radius of the circle, and subtract from the entire area of the triangle.
First, the area of an equilaterail triangle is given by the formula s^2 *sqrt3/4.
Next, the connect the center of the radius to points of tangency. Note this bisects the angle of the equilateral triangle into a 30 degree angle, and connecting radii to points of tangency forms a 90 degree angle, so this is a 30-60-90 triangle. This bisects the side length of the triangle, and the ratio of sides of a 30-60-90. Set this length as x. Thus, we have 4x^2=x^2+25, so 3x^2 =25. Dividing both sides by 3, we get x^2=25/3. Note that we only need x^2, as the formula is x^2 * pi. Hence, the area of the shaded region is 25sqrt3-25pi/3.
18 I think is a
19 I think is b
Don't quote me
