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4 years ago

14

Which of the following correctly shows the length of each radius, the point where the circles intersect, and the equation of the

tangent line at this point?

1 answer:

ollegr [7]4 years ago

6 0

actually box 3 is correct.

because their radiuses are easy to find

but the tangent line is x=-4 or x=4

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For the function f x equals square root x ^ 3 - x, State the condition that must be satisfied for the FX to be Define. Then, sol

Svetradugi [14.3K]

Answer:

Domain: $[-1,0]\cup [1,\infty )$

Step-by-step explanation:

Since we know that a square root function is not defined for negative numbers. In order our function to be defined values inside radical must be greater than or equal to zero.

Our function will be defined when $x^{3} -x\geq 0$

$x(x^{2} -1)\geq 0$

$x(x-1)(x+1)\geq 0$

$1\geq x\leq 0$ or $x\geq1$

Now we will use number line method of solving inequalities to check whether our answer is right or not.

Let us try -2, -1/2, 1/2 and 2 to check which conditions meet our criteria.

$-2^{3} --2\geq 0\\-6\leq 0$

$(\frac{-1 }{2}) ^{3} -(\frac{-1}{2}) \geq0$

$\frac{-1}{8} +\frac{1}{2} \geq 0\\\frac{3}{8} \geq 0$

$(\frac{1 }{2}) ^{3} -\frac{1}{2} \geq0$

$\frac{1}{8} -\frac{4}{8} \leq 0$

$2^{3} -2\geq 0\\6\geq 0$

Therefore, we can see that our function is defined when $1\geq x\leq 0$ or $x\geq1$ and domain of f(x) is $[-1,0]\cup [1,\infty )$ .

4 0

3 years ago

What is 12.25 divided by 2.5

vredina [299]

Answer:

4.9

Step-by-step explanation:

8 0

3 years ago

( 5 + 0) +4=5 +4 what property of addition is this

sergeinik [125]

Answer:

Associative Property

Step-by-step explanation:

To associate means to connect or join with something. According to the associative property of addition, the sum of three or more numbers remains the same regardless of how the numbers are put together.

4 0

3 years ago

Rachel harvested half as many watermelons as strawberries. If there were 28 watermelons, how many strawberries did she get?

Misha Larkins [42]

Answer:

56

Step-by-step explanation:

If there are 2x as many strawberries than watermelons and there is 28 watermelons....than.

28 x 2 = 56

56 strawberries.

8 0

3 years ago

Read 2 more answers

Please try to help me if you can

Olegator [25]

Answer:

D is the correct answer

Step-by-step explanation:

hope this helps

3 0

3 years ago