Answers: - vector equation: r(t) = <1 + 6t, -1 + 7t, 7 - 6t>
- parametric equations:
x = 1 + 6t
y = -1 + 7t
z = 7 - 6t
Explanation: To obtain the vector equation, we first get a vector v that is parallel to the line. To get the vector v, we subtract p from q. So,
v = q - p
= (7,6,1) - (1,-1,7)
v = (6, 7, -6)The vector equation of the line is given by

Where

= a point in the line (we choose point p(1,-1,7))
So, the equation of the line joining p and q is given by

In the parametric equation of the line, we just need to get the x, y and z coordinates in the vector equation.
Since the vector equation is given by

The parametric equations of the line are given by:
Answer:
The density of the material must be at least 1.5 g/cm³.
Step-by-step explanation:
The volume for a pyramid is given by the following formula:
V = (1/3)*Abase*h
Where V is the volume, Abase is the base area and h is the height. For Alexis's pyramid, we have:
V = (1/3)*100*6 = 200 cm³
Since he wants the paperweigth to have a mass of at least 300 grams, the density must be at least:
density = mass/volume = 300/200 = 1.5 g/cm³
Answer:
D. m+s=30
2m+3s=75
Step-by-step explanation:
let m be the no of multiple choice questions and s be the short questions then there are a total of 30 questions
m+s=30------A
there are 2 points for m(multiple choice questions) and 3 points for short questions (s) and totalling to 75
2m+ 3s=75
Answer:
none of them.
Step-by-step explanation:
A. 7 and 4 can not go into 30
B & D are the same choice and LCD is 15
C. LCD is 15
Answer:
y-3= 2(x-1)
Step-by-step explanation:
1. The equation of a line in point slope form is y-y1= m(x-x1)
2. m=slope and (x1,y1) is the point the line passes through
3. The point the line passes through is (1,3)
4, The slope is 2
5. Therefore the answer is y-3=2(x-1)