Y = x + 3 is the answer
the y-intercept is 3, so the answer should have a "+ 3" in it
when you are trying to determine the gradient (the x), you can use two methods
first method:
picture/sketch the line. If the line is going upwards (from left to right), it's positive. If the line is going downwards (from left to right), it's negative. However, this method only works for this question, you should try using the second method more
second method:
use the formula: (y - y) / (x - x)
So, you use the y from one of the brackets and subtract the y from the other bracket. Then, you put it over the x ,from the same bracket as the first y, and subtract the x from the second bracket. If you are confused, look at the picture. (Sorry for the messy explanation)
Answer:
24
Step-by-step explanation:
24
Answer:
The volume of this sphere =
Step-by-step explanation:
The region enclosed by the semicircle is revolved completely around the x-axis . Then the solid formed is a sphere of the same radius as that of the semicircle. We have to find the volume of this sphere. If the semicircle had center at the origin then the sphere also has the center at the origin.
Let the radius of given circle = r
Surface area of this sphere =
The volume of this sphere =
This is the volume of the required solid.
Answer:
.023------ 7/30
.4------ 4/9
1.6----- 5/3
3.5------ 32/9
All I did was divide each fraction (the numerator by the denominator) and use the answer I got to match the fraction with the decimal.
hope this helps!
Answer: -42
Step-by-step explanation: 2*2 matrices are easy to find the determinant with. Its just ad-bc, so (5*-2)-(4*8), which is -42