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Strike441 [17]
4 years ago
11

Please help solve for x

Mathematics
1 answer:
Ronch [10]4 years ago
3 0
There is no attachment 
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Who wanna talk to me lol
gizmo_the_mogwai [7]

Answer:

Step-by-step explanation:

           

6 0
3 years ago
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Last question for today ✌
miv72 [106K]

Answer:

I think it is D

Step-by-step explanation:

7 0
3 years ago
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Consider function f.
tekilochka [14]

Given:

The function is:

f(x)=\sqrt{7x-21}

To find:

The steps of finding the inverse function f^{-1}(x).

Solution:

We have,

f(x)=\sqrt{7x-21}

The steps of finding the inverse function are:

Step 1: Substitute f(x)=y.

y=\sqrt{7x-21}

Step 2: Interchange x and y.

x=\sqrt{7y-21}

Step 3: Taking square on both sides, we get

x^2=7y-21

Step 4: Adding 21 on both sides, we get

x^2+21=7y

Step 5: Divide both sides by 7.

\dfrac{1}{7}x^2+3=y

Step 6: Substitute y=f^{-1}(x).

\dfrac{1}{7}x^2+3=f^{-1}(x), where x\geq 0.

Therefore, the inverse of the given function is f^{-1}(x)=\dfrac{1}{7}x^2+3 and the arrangement of steps is shown above.

7 0
3 years ago
Tom has three times as many action figures as Jerry. If Tom has 27 action figures, how many does Jerry have?
weeeeeb [17]

Answer:

Step-by-step explanation:

3j = 27

j = 9

Jerry has 9 figures.

3 0
3 years ago
= 2. Given the quadratic equation 3x2 – 8x + k = 0 has no real roots. Find the range of values of k.
VashaNatasha [74]

\text{If there  are no real roots, then}\\\\~~~~~\text{Discriminant} < 0\\\\\implies b^2 -4ac < 0\\\\\implies (-8)^2 -4 \cdot 3 k < 0\\\\\implies 64-12k < 0\\\\\ \implies 12k > 64\\\\\implies k > \dfrac{64}{12}\\\\\implies k > \dfrac{16}3\\\\\text{Interval,}~ \left( \dfrac{16}3, ~\infty\right)

6 0
2 years ago
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