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4 years ago

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

Mathematics

1 answer:

Dovator [93]4 years ago

7 0

Answer:

Step-by-step explanation:

No. If you reverse the prime number 23, you get 32 and that number is not a prime number.

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Multiply the Polynomials<br> 2a2(3-5)-6a(8q2 - 2a + 4)

Amiraneli [1.4K]

Answer:

Step-by-step explanation:

first you subtract the numbers

then multiply

then distribute

combine like terms

and rearrange the terms

6 0

3 years ago

Which of these numbers are less than 8.1 × 10^-8?

lina2011 [118]

The answer is 3.4×10^-10

8 0

3 years ago

Find the value of x and y

Amiraneli [1.4K]

Answer:

y=110 because the angles correspond

x=55 because they are verticals angles and are congruent so you set them equal to each other

Explanation:

2x=110

x=55

6 0

4 years ago

The cost to mail a package is $7 for the first 2 pounds and 30 cents for each additional ounce. Which of the following functions

SOVA2 [1]

A. f(x) = 7 + 0.3x

Just re-read your question! Hope I helped!

5 0

4 years ago

Please need help in these 3 algebra questions !!!!

Marysya12 [62]

Answer:

$\large\boxed{7.\ B.\ 8s^2+16s+1}\\\\\boxed{8.\ D.\ -15t^9u^{11}}\\\\\boxed{11.\ C.\ 3,\ -2}$

Step-by-step explanation:

$7.\\(3s^2+7s+2)+(5s^2+9s-1)=3s^2+7s+2+5s^2+9s-1\\\\\text{combine like terms}\\\\=(3s^2+5s^2)+(7s+9s)+(2-1)\\\\=8s^2+16s+1$

$8.\\(-3t^2u^3)(5t^7u^8)=(-3\cdot5)(t^2t^7)(u^3u^8)\qquad\text{use}\ a^na^m=a^{n+m}\\\\=-15t^{2+7}u^{3+8}=-15t^9u^{11}$

$11.\\n-the\ number\\\\n^2=n+6\qquad\text{subtract}\ n\ \text{and}\ 6\ \text{from both sides}\\\\n^2-n-6=0\\\\n^2+2n-3n-6=0\\\\n(n+2)-3(n+2)=0\\\\(n+2)(n-3)=0\iff n+2=0\ \vee\ n-3=0\\\\n+2=0\qquad\text{subtract 2 from both sides}\\n=-2\\\\n-3=0\qquad\text{add 3 to both sides}\\n=3$

4 0

4 years ago