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AleksAgata [21]
3 years ago
11

The sum of two different prime numbers is always prime counterexample

Mathematics
2 answers:
Fed [463]3 years ago
6 0

Answer:

Step-by-step explanation:

Two prime numbers are 3 and 5.

3 + 5 = 8

And we clearly know 8 is not a prime number.

11111nata11111 [884]3 years ago
4 0

Answer:

1+7 equals 8, which is not a prime number

Step-by-step explanation:

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2 years ago
Umm can someone help? I’ll mark brainliest
aleksklad [387]

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the first is 70 and the second is 140

Step-by-step explanation:

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3 years ago
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iren [92.7K]
To start, the first thing you need to know is that when you add decimals, you must line the decimal up, meaning, if you were adding 2.7+4.1, you have to make sure 2 is lined up with 4, and 7 is lined up with 1 so that the decimals align. Then, you add straight down from right to left and you get 6.8 as your answer.
3 0
3 years ago
Read 2 more answers
A rectangle has an area of 8/9 square yard. Which could be the dimensions of the rectangle?
katen-ka-za [31]

Answer:

There could be any number of dimensions as long as the two dimensions multiply to 8/9

Step-by-step explanation:

One example of this would be 2 by 4/9

2 * 4/9 = 8/9

6 0
3 years ago
Prove:<br> sin^2x (sec^2x + csc^2x)=sec^2x
Vikki [24]
Sin^2x (sec^2x + csc^2x) = sec^2x

I would convert the functions in the parentheses to their reciprocals.

sin^2x (1/cos^2x + 1/sin^2x) = sec^2x

Now distribute the sine.

sin^2x/cos^2x + sin^2x/sin^2x = sec^2x

Remember that sine divided by cosine is always tangent.

tan^2x + sin^2x/sin^2x = sec^2x

The remaining fraction is simply 1.

tan^2x + 1 = sec^2x

Use the Pythagorean identity to add the left side.

sec^2x = sec^2x

Q.E.D.
4 0
3 years ago
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