X is equal to 48
First subtract 4 from both the sides to get
-x/3 = 16
Then multiply both sides by 3 to get x alone
-x = 48
Now divide the both sides by -1, since we can't have x being negative to get
X = 48
Hope this helps:)
Answer:
n(A) = 7
Step-by-step explanation:
Let set A be A = {a,b,c}
We can say n(A) = 3
So basically n(A) means the "number of elements (unique) in set A"
They have to be unique.
For this problem, set A is:
A = {-3,-1,1,3,5,7,9}
If we count, there are 7 unique elements in this set. Thus:
n(A) = 7
Answer:
T = 1.5s
Step-by-step explanation:
Hello,
To find the time the pincone hits the ground, we need to use the equation given.
Note that h = 0 when the pinecones hits the ground.
This question relates to motion under gravity.
h = -16t² + 36
0 = -16t² + 36
Make t² the subject of formula
16t² = 36
t² = 36 / 16
t² = 2.25
Take the square root of both sides
t = √(2.25)
t = 1.5s
The time it takes the pinecone to hit the ground is 1.5s.
