Answer:
for prism
let n= no.of sides of the shape of end face
face=n+2
vertices=2n
edge=3n
atq...shape of prism. F. V. E
triangle n=3. 5. 6. 9
rectangle. 6. 8. 12
Pentagon. 7. 10. 15
hexagon. 8. 12. 18
by puuting value of n in above formulas a for f v and e
Answer:
x = 7 cm.
Step-by-step explanation:
The 2 triangles are similar so corresponding sides are in the same ratio.
Therefore:-
x / 42 = 6/36
x / 42 = 1/6
6x = 42
x = 7 (answer).
Answer:
-20 divided by -0.8 which is 25
Step-by-step explanation:
That's point-slope form:
y - y1 = m(x - x1)
Where y1 is the y-value of a point on the line, x1 is the x-value, and 'm' is the slope.
So let's find out what goes in the first blank.
As we can see, they replaced 'x1' with -1, and one of our points have an x-value of -1, that point is (-1, -2), this means y2 must be -2:
y + 2 = m(x + 1)
Now let's find the slope between the two points.
m = y2-y1/x2-x1
m = (10+2)/(3+1)
m = 12/4
m = 3
So the slope is 3, plug that in:
y + 2 = 3(x + 1)
