Answer:
5/7
Step-by-step explanation:
y2 - y1 / x2 - x1
-6 - (-1) / 0 - 7
-5 / -7
= 5/7
Part A
c - number of washed cars
Answer: 400 + 5c > 900
Part B
400 + 5c > 900 | - 400
400 + 5c - 400 > 900 - 400
5c > 500 | : 5
5c : 5 > 500 : 5
c > 100
Answer: 100 cars
im going to say d but im not good at math
Answer:
6x
2
−3−7x
=6x
2
−7x−3
=6x
2
−9x+2x−3
=3x(2x−3)+1(2x−3)
=(2x−3)(3x+1).
Then, f(x)=0⟹2x−3=0 and 3x+1=0.
Therefore, 2x=3 and 3x−−1.
That is, x=
2
3
, x=
3
−1
.
In this question, you have to use the Pythagorean theorem. (the formula is in the box, ‘a squared’ and ‘b squared’ is used to find the legs of the triangle, while the ‘c squared’ in the formula is used to find the hypotenuse of the triangle.