Answer choices are
A)Many prime numbers have a difference of two, such as 5 and 7, 11 and 13, and 41 and 43.
B)The numbers 15, 35, 21, are all odd, but not prime numbers.
C)There could be a very large number that is even and prime.
D)The number 2 is a counterexample.
Only number 2 is prime and even number.
Option D is correct.
A prime number is a whole number greater than 1 whose only factors are 1 and itself.
From above definition of numbers, It is observed that 2 is prime and even number.
Thus, statement "All prime numbers are odd " is false.
Learn more about the Number system here:
goalpost, then places a mirror on flat on the ground, marked with an X at the center.
She then steps 1.4 meters to the other side of the mirror, until she can see the top of
the goalpost clearly marked in the X. Her partner measures the distance from her
eyes to the ground to be 1.65 meters. How tall is the goalpost? Round your answer to
the nearest hundredth of a meter.
The geometry technique that Chee uses to find the height of the goalpost is the equal ratio of the corresponding sides of similar triangles.
Correct response:
The length Chee is using the mirror to measure = The height of her school's football goalpost
The distance of the mirror from the goalpost = 14.35 meters
The distance on the other side of the mirror Chee steps to = 1.4 meters
The distance from her eyes to the ground =1.65 meters
Required:
How tall is the goalpost.
Solution:
By using similar triangles relationships, we have;
Which gives;
Learn more about similar triangles here:
15abc^2 and 25a^3bc
Answer:
x = 7
Step-by-step explanation:
You want to subtract 11 from 18 so you get the x alone.
18-11=7
So if you plug it back into the equation it would be
x = 7
Answer:
37.5%
Step-by-step explanation:
40-x%*40=25
x%40=15
x%=15/40=37.5%