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noname [10]
3 years ago
13

The range of which function includes –4?

Mathematics
2 answers:
d1i1m1o1n [39]3 years ago
8 0

Answer: A

Step-by-step explanation: nO cAp

Ahat [919]3 years ago
4 0

Correct option A) y = StartRoot x EndRoot minus 5

<u>Step-by-step explanation:</u>

Here we have , to find which of the following function includes range -4 ! Let's find out range for each function :

y = StartRoot x EndRoot minus 5

Equation is given as :

⇒ \sqrt{x} -5

At x=1 , we have

⇒ \sqrt{1} -5

⇒ -4

Hence , This function range includes -4 .

y = StartRoot x EndRoot + 5

Equation is :

⇒ \sqrt{x} +5

We know that \sqrt{x} \geq 0 for every value of x , Hence minimum value of this function is :

⇒ \sqrt{0} +5 = 5

Hence , This  function range doesn't includes -4

y = StartRoot x + 5 EndRoot

Equation is :

⇒ \sqrt{x+5}

We know that \sqrt{x+5} \geq 0 for every value of x , Hence minimum value of this function is :

⇒ 0

Hence , This  function range doesn't includes -4

y = StartRoot x minus 5 EndRoot

Equation is :

⇒ \sqrt{x-5}

We know that \sqrt{x-5} \geq 0 for every value of x , Hence minimum value of this function is :

⇒ 0

Hence , This  function range doesn't includes -4.

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Mama L [17]

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Step-by-step explanation:


6 0
3 years ago
An actor invests some money at 7%, and $48000 and more than twotimes the amount of 9%. The total annual interest earned from the
forsale [732]

Answer:

At 7% $54,000

At 9% $156,000

Step-by-step explanation:

Let x be the amount invested at 7%, Then 2x + 48000 will be the amount invested at 9%

We know that:

7% = 0.07 & 9% = 0.09

So we can write the interest equation as follows:

0.07x + 0.09 (2x + 48000) = 17820

0.07x + 0.18x + 4320 = 17820

0.25x + 4320 = 17820

Subtracting 4320 from both sides of the equation we get:

0.25x = 17820 - 4320

0.25x = 13500

Dividing both sides of the equation by 0.25 we get:

x = 13500 / 0.25

x = $54,000 invested at 7%

&

2 x 54000 + 48000

= $156,000 invested at 9%

Hence the amount invested at 7% is $54,000.

& the amount invested at 9% is $156,000.

5 0
3 years ago
10.2 = 0.6y what is y
AVprozaik [17]

Answer:

y = 17

Step-by-step explanation:

isolate the variable by dividing each side by factors that don't contain the variable.

6 0
2 years ago
Please help me out..(:
Nitella [24]

Let's call the left side of this tirangle y and downside z.

3² + 6² = y²

y² = 45

y² + z² = (3 + x)²

45 + z² = 9 + 6x + x²

x² + 6² = z²

45 + x² + 6² = 9 + 6x + x²

45 + x² + 36 = 9 + 6x + x²

45 + 36 - 9 = 6x

72 = 6x

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4 0
3 years ago
Which expression equals 9 cubed square root 10
soldier1979 [14.2K]
There’s a calculator for that
7 0
3 years ago
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