All categories

3 years ago

N increased by 7 is 44

Mathematics

2 answers:

Otrada [13]3 years ago

6 0

N increased by 7 is 44, so N = 6.285714

iVinArrow [24]3 years ago

4 0

I think the answer is n=37

You might be interested in

Plz help me with this

zvonat [6]

Answer: 5 cos x

<u>Step-by-step explanation:</u>

y = sin x is y = cos x shifted to the right π/2 units.

y = 5 sin (x + π/2) is a shift to the left π/2 units (which results in cos x) and . an amplitude of 5.

--> y = 5 cos x

8 0

3 years ago

there are 18 girls and 22 boys in a class that has a letter the probability that the owner of the letter is a boy

Slav-nsk [51]

18 + 22 = 40 total kids.

22 are boys

Probability the letter is with a boy would be 22/40 = 11/20

4 0

4 years ago

Add the polynomials below.<br> (x² + 3x3 – 4x2) +(4x3 + 2x)

AleksAgata [21]

2(x+1) :)))))))))))))))))))

8 0

3 years ago

Find all real and complex zeros of p(x)=x^3-x^2-4x-6

yuradex [85]

Answer:

x = 3 , -1 + $\sqrt{-1}$ , -1 - $\sqrt{-1}$

Step-by-step explanation:

⇒ $p(x)=x^{3} -x^{2} -4x-6$

⇒ $p(x)=(x-3)(x^{2} +2x+2)$

now, for zeros of $(x^{2} +2x+2)$ ,

⇒ x = $\frac{-b}{2a}$ ± $\frac{\sqrt{b^{2}-4ac } }{2a}$

⇒ x = $\frac{-2}{2}$ ± $\frac{\sqrt{2^{2}-4(2) } }{2}$

⇒ x = -1 ± $\sqrt{-1}$

hence, all the roots are,

x = 3, -1 + $\sqrt{-1}$ , -1 - $\sqrt{-1}$

7 0

3 years ago

B) Prove or disprove by example or by exhaustive checking that every integer greater than 1 is either prime or sum of two primes

lisabon 2012 [21]

Answer:

Every integer greater than 1 is either prime or composite.

Step-by-step explanation:

Let us negate this statement.

Assumption - any number greater than 1, is neither prime nor composite.

A prime number has only 2 divisors, and a composite number has at least 3.

Let a number be X such that X >1.

Now X is divisible by 1 (Any integer is divisible by 1)

And X is divisible by X (X/X = 1, if X is not zero)

So by this, we see X has at least 2 divisors, X is either prime, or composite if it has more divisors!

So our assumption is wrong, and every integer greater than 1 is either prime or composite.

6 0

3 years ago