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GenaCL600 [577]
3 years ago
14

What is the factorization of x^3+8

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
8 0
Factor:

X^3 + 8


= ( x + 2)( x^2 -  2x + 4)

Answer is (x + 2)(x^2 - 2x  + 4)






Hope that helps!!!


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Two numbers are in the ratio 7:5 and their difference is 22.Find the numbers​
omeli [17]

Answer:

Let x and y be the two numbers. Then

yx=57  and x−y=20

Cross multiplying the proportion

5x=7y  or y=75x

So, x−y=20

x−75x=20⇒77x−5x=72x=20

⇒x=2140=70

y=75x=75×70=50

So smaller number is 50.

Check :yx=5070=57 and 70−50=20

4 0
3 years ago
If h(t) = t^2/3 – 9 and j(t) = 3t + 5t^2/3,
mars1129 [50]

Answer:

A

Step-by-step explanation:

h(t)-j(t)=t^{\frac{2}{3}}-9-[3t+5t^{\frac{2}{3}}]\\\\=t^{\frac{2}{3}}-9-3t-5t^{\frac{2}{3}}\\\\=t^{\frac{2}{3}}-5t^{\frac{2}{3}}-3t-9\\\\=[1-5]*t^{\frac{2}{3}}-3t-9\\\\=-4t^{\frac{2}{3}}-3t-9

7 0
4 years ago
What is the average value of y=cosx/x^2+x+2 on the closed interval "[-1, 3]"?
soldi70 [24.7K]
We have 
<span>y=cos x/(x</span>²+x+2)  <span>on the closed interval [-1, 3]
</span><span>
we know that
</span>The average value of f(x) on the interval [a, b] is given by: 
<span>F(avg) = 1/(b - a) ∫ f(x) dx (from x=a to b). 
(b-a)=(3+1)------> 4
</span>= 1/4 ∫ cos(x)/(x² + x + 2) dx (from x=-1 to 3). 

Note that [cos(x)/(x² + x + 2)] does not have an elementary anti-derivative.
 By approximating techniques: 
1/4 ∫ cos(x)/(x^2 + x + 2) dx (from x=-1 to 3) ≈ 0.182951

the answer is
<span>the average value of y = cos(x)/(x</span>²<span> + x + 2) on [-1, 3] is approximately 0.182951</span>

5 0
3 years ago
What is the solution to the equation x + 8.5 = 64.5? 7.6 48 56 73
Bogdan [553]
The solution to x + 8.5 = 64.5 is 56.

    x + 8.5 = 64.5
       - 8.5   - 8.5
---------------------------
    x = 56


4 0
3 years ago
Read 2 more answers
If an electric hair dryer uses 2,400 j of energy in 2s, what is its power?
AnnyKZ [126]
4800 j ya que lo valoras por segundos no por minutos y lo vas a sumar una vez con la misma cantidad que te dio

7 0
3 years ago
Read 2 more answers
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