Answer:
Each answer correct is 5 points so Doug got 40 points.
Step-by-step explanation:
Answer:
The answer is A
Step-by-step explanation:
Answer:
Step-by-step explanation:
- The pyramid of Khafre measured 143.5 meters high.
- The pyramid of Menkaure measured 65.5 meters high.
<u>The difference in the heights of the two pyramids:</u>
- d = 143.5 m - 65.5 m
- d = 78 m
Answer:
81.67cm² to 2d.p
Step-by-step explanation:
32cm=2πr
32/2π=r
r=32/6.28
=5.0955
area=πr²
=3.14×5.1²
=81.67
Answer:
A
Step-by-step explanation:
Here, we are to select which of the options best answer the question. The correct answer here is that the product of the slopes of the two lines is -1.
When we talk about perpendicular lines, these are lines that are at an angle of 90 degrees to each other.
These lines have slopes of which their product is -1. What this means is that one of the slopes is a negative reciprocal of the other. By multiplying these two slopes together, we get -1.
Say we have two perpendicular lines with slopes m1 and m2 respectively, the product of both slopes is equal to -1.
Mathematically in this case;
m1 * m2 = -1