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olga nikolaevna [1]
3 years ago
13

Solve for x 2x/3 +1 =3

Mathematics
1 answer:
Bess [88]3 years ago
5 0

Answer:

x=3

Step-by-step explanation:

Hello,

The first thing you do is set up your equation, and we are solving for x so we are going to get x by itself on one side of the = sign.

       2x/3+1=3        First thing: subtract 1 from BOTH sides.

               -1  -1

----------------------

          2x/3=2       Multipliy by 3 on both sides

              *3 *3

-----------------------

            2x=6         Divide by 2 on both sides

             /2 /2

-----------------------

           x=3

I hope this helped you!!!

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“Write an equation in standard form of the horizontal line that goes through (-7, 10)”
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y is equal to 12 times the difference between a number and 4. Which of the following equations models this situation?
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A)Determine whether the sequence is divergent or convergent. If it is convergent, evaluate its limit. If it diverges to infinity
Colt1911 [192]

Answer:

a) The sequence converges to 0

b) The lenght of the curve is \frac{1}{54}(217^{3/2}-37^{3/2})

Step-by-step explanation:

Consider the sequence a_n = \frac{-6n^6 + \sin^2(7n)}{n^7+11}

a) We will prove it using the sandwich lemma. Note that for all n -1\leq \sin^2(7n)\leq 1, then

\frac{-6n^6 -1}{n^7+11}\leq\frac{-6n^6 + \sin^2(7n)}{n^7+11}\leq \frac{-6n^6 + 1}{n^7+11}

Note that the expressions on the left and the right hand side have a greater degree on the denominator than the one on the numerator. Then, by takint the limit n goes to infinty on both sides, we have that

0 \leq\frac{-6n^6 + \sin^2(7n)}{n^7+11} \leq 0

So, the sequence converges to 0.

b) The function f(x) = 4x^{3/2}+7 the formula of curve lenght is given by

s = \int_a^b \sqrt[]{1+(f'(x))^2}dx

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Note that f'(x) =6x^{{1/2}. Then

s=\int_1^6 \sqrt[]{1+36x}dx. Take u  = 1+36x. Then du= 36dx (i.e du/36 = dx). If x = 1, then u = 37 and if x = 6 then u = 217. So,

s=\frac{1}{36}\int_{37}^{217}\sqrt[]{u} du = \frac{2}{36\cdot 3} \left.u^{3/2}\right|_{37}^{217}=\frac{1}{54}(217^{3/2}-37^{3/2})

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