Answer:
5 seconds
Step-by-step explanation:
In 5 seconds it will be at 98 meters
x = -b/2a
x = -20/2(-2) = -20/-4 = 5
Answer:
The estimate of a population proportion is approximately 541.
Step-by-step explanation:
We can solve the the problem by using the formula for minimum sample needed for interval estimate of a population proportion which is given by the formula
n = pq ((Z/2) / E)^2
As, p is not defined so we use the standard p and q which is 0.5 and 0.5.
The reason for this is we have to choose form 0.1 to 0.9 both values of p and q, we will find the maximum value of pq occurs when they both are 0.5.
Next, we will find the value of (Z/2) by looking at the Z-table, we will find that at 98% confidence (Z/2) = 2.326. Now we start substituting the values in the above formula
n = (0.5)×(0.5) × (2.326/0.05)^2
n = 541.027
n ≅ 541.
Answer:
5.02 m/s
Step-by-step explanation:
We are given that
Mass of block,m=8 kg
Initial velocity,u=3.2 m/s
Net force ,F=10 N
Distance,s=6 m
We have to find the approximate final velocity of the block.
We know that
Using the formula
We know that
Using the formula
Answer:
15
Step-by-step explanation:
the formula for area of a parallelogram is base times height
Answer:
Option A. Cylinder.
Option D. Cube
Step-by-step explanation:
In this question we have to tell that which are the figures have parallel bases.
Cylinder: Cylinder has two parallel congruent circular bases at the top and at the bottom.
Circle : It's a two dimensional structure and doesn't has any top or bottom.
Cone : It has only one circular bottom.
Pyramid : Pyramids have only one base circular or rectangular.
Cube : Cube is a three dimensional figure having minimum two congruent sides parallel to each other.
Therefore Option A. Cylinder and Option D. Cube are the answers.