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marysya [2.9K]
3 years ago
9

Does reversing the order of digits of a 2 digit prime number always result in a prime number

Mathematics
2 answers:
Naily [24]3 years ago
7 0
No 
for example:
     
                29   if you switch the digits it becomes 92 and 92 is composite because 2x46=92



Contact [7]3 years ago
4 0
No, for example, if you had the prime number 23, and you switched the numbers around, it is 32. 32 is not a prime number.
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Alec says the sum of two numbers can never be less than either number.
STatiana [176]

Answer:

If you put two things together it cannot be less than what was originally there.

Step-by-step explanation:

For example if you have two bowls of soup and you add them together you will have more soup.

4 0
2 years ago
The area of the following equilateral triangle is 62.4 square feet that is he height
Vikentia [17]

The height of this triangle would be 10.4

In order to find this, you first must find the length of the sides. Using a manipulated formula for area of an equilateral triangle, we can determine the lengths of the side. Below if the formula.

S = \frac{2}{3}3^{\frac{3}{4}} \sqrt{A}

In this, S is the length of the side and A is the area. So we plug in and get:

S = \frac{2}{3}3^{\frac{3}{4}} \sqrt{62.4}

S = \frac{2}{3}3^{\frac{3}{4}} 7.89

S = 12

Now that we have the side as 12, we can use the Pythagorean Theorem to find the height. If you split a equilateral triangle down the middle, you are left with two right triangles. Using this right triangle, the hypotenuse would be 12, the first leg would be 6 (half of the base) and the height would be the other leg. So we plug in and solve.

a^{2} + b^{2} = c^{2}

6^{2} + h^{2} = 12^{2}

36 + h^{2} = 144

h^{2} = 108

h = 10.4

5 0
3 years ago
- There are 24 bottles of water in a case.
muminat

Answer:

96

Step-by-step explanation:

No. Of bottles in a case × No. Of cases bought

24 × 4

= 96

7 0
3 years ago
Find the arithmetic of the numbers 109, 113, 56, 87, 39, 68, 116, 79, 111, 91, 78, 121, 56
kvasek [131]
56 would be your answer because it’s the lowest number
8 0
2 years ago
How could you use the property to compute 2x8x2 mentally
Sveta_85 [38]
First you need to kbkw you 2x tables then you multiply 2x8=16x2=32 the best way to do it is to break ot down in your head say that you know that 2x2=4 then you do 4x8=32
8 0
3 years ago
Read 2 more answers
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