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2 years ago

14

Explain why it is necessary to check the solutions to a radical equation.

1 answer:

guajiro [1.7K]2 years ago

5 0

Answer:

When a power is taken on both sides of an equation, the resulting solutions might not check in the original radical equation. These are called extraneous solutions. You must check solutions by substituting in the values into the original equation and verifying that it produces a true statement.

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Is b - 12 = - 5; 17 solution

Pani-rosa [81]

No the answer to the solution would be 7

7 0

3 years ago

Give the domain of each of the following functions in interval notation.

balandron [24]

Answer:

the domain of f(x) is R ⇒ ] -∞ , ∞[

the domain of h(x) is x ≤ -5 ⇒ ] -∞ , -5]

Step-by-step explanation:

h(x) = \sqrt[8]{-2x-10}

-2x - 10 ≥ 0

-2x ≥ 10

x ≤ -5

8 0

3 years ago

Help me solve this question please.

pantera1 [17]

The answer is D. 9(y + 3) and 27 + 9y because 9(y + 3) when expanded is 9y + 27. I hope this helps!

3 0

3 years ago

Which function has the greater maximum value: f(x) = -2x2 + 4x+3, or g(x),

Zepler [3.9K]

Answer:

B

Step-by-step explanation:

f(x) maxmum value is

$\frac{ - 4}{ - 4} = 1$

$- 2( {1}^{2} ) + 4(1) + 3 = 5$

G(x) minimum value is 6.

B is the answer.

5 0

2 years ago

The value of a boat if depreciating at at a rate of 9% per year. In 2006 the boat was worth $17,800. Find the worth of the boat

svetlana [45]

Answer:

The worth of boat in 2013 will be $9202.6

Step-by-step explanation:

Rate of depreciation = 9% = 0.09

Cost of Boat in 2006 =$ 17,800

Cost of Boat in 2013 = ?

Years = 2013-2006= 7 years

The formula used is: $\mathbf{A=P(1+r)^{t}}$

Since the value of boat is depreciating the value of r will be r=-0.09

Here P = 17,800 , r=-0.09 and t = 7 years Finding A

$A=P(1+r)^{t}\\A=17,800(1+(-0.09))^7\\A=17,800(0.91)^7\\A=17,800(0.517)\\A=9202.6$

So, the worth of boat in 2013 will be $9202.6

4 0

2 years ago