Which is a true conclusion based on the Venn diagram? If a number is prime, it is also odd. If a number is odd, it is also prime
. If a number is not odd, it cannot be prime. If a number is prime, it may or may not be odd.
1 answer:
Answer:
If a number is prime, it may or may not be odd.
Step-by-step explanation:
The prime numbers are all natural numbers greater than 1, which are only divisible between themselves and between 1. For example: 2, 3, 5, 7, 11 ...
A Venn diagram is shown in the attached figure
There you can see that not all even numbers are primes for example, 4 is an even number, but it is not a prime number. Then, not all odd numbers are prime numbers, for example 9 is an odd number, but it is not a prime number.
Neither all prime numbers are odd, for example the number 2 is a prime number and it is not odd.
Notice in the attached Venn diagram that the set of prime numbers contains even numbers and also odd numbers.
Therefore, the correct statement is the last option:
If a number is prime, it may or may not be odd.
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The table is missing, so i have attached it.
Also, the correct question is;
The surface area of the East China Sea is k times the surface area of the Baltic Sea.
Work out the value of k.
Give your answer to the nearest whole number
Answer:
k = 3
Step-by-step explanation:
From the attached table,
Surface area of east china = 1.25 × 10^(6) km²
Surface area of Baltic sea = 4.22 × 10^(5) km² = 0.422 × 10^(6) km²
We are told that the surface area of East China Sea is k times that of the surface area of the Baltic Sea.
Thus;
1.25 × 10^(6) = k × 0.422 × 10^(6)
k = 1.25/0.422
k = 2.96
Approximating to whole number gives;
k = 3
