Which of the following groups of numbers are all prime numbers? A. 2, 5, 15, 19 B. 7, 17, 29, 49 C. 2, 3, 5, 9 D. 3, 11, 23, 31
Ivanshal [37]
Some prime numbers
2,3,5,7,11,13,17,19,23,29,31
just try to divide by those and if you an, then it isn't prim
A. 15/3=5 so not prime
B. 49/7=7, not prime
C. 9/3=3 not prime
D. all prime
answe ris D
B. When you reflect across the x- axis, pretend the x axis (the horizontal line) is a mirror. So the point (-3,6) reflected is still at -3 but it goes down to -6.
To find<span> the </span>perimeter<span> of a </span>polygon<span>, take the sum of the length of each side. The formula for </span>perimeter<span> of a rectangle is: . To </span>find<span> the </span>perimeter<span> of a regular </span>polygon<span>, multiply the number of sides by the length of one side.</span>
Answer:
10
Step-by-step explanation: