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3 years ago

10

Hello please help! posted picture of question

1 answer:

notsponge [240]3 years ago

5 0

The answer to this question is FALSE.

Domain is the set of all the numbers that we can input to the function or that can be used in place of x. The numbers which make the function undefined are excluded from the domain.

In the given exponential function, there is no any value of x which will make the function undefined, so the domain of the function if set of All real numbers. In general, domain of exponential functions is Set of All real numbers.

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Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth.

likoan [24]

Answer:

Thus, the two root of the given quadratic equation $x^2+4=6x$ is 5.24 and 0.76 .

Step-by-step explanation:

Consider, the given Quadratic equation, $x^2+4=6x$

This can be written as , $x^2-6x+4=0$

We have to solve using quadratic formula,

For a given quadratic equation $ax^2+bx+c=0$ we can find roots using,

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$ ...........(1)

Where, $\sqrt{b^2-4ac}$ is the discriminant.

Here, a = 1 , b = -6 , c = 4

Substitute in (1) , we get,

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

$\Rightarrow x=\frac{-(-6)\pm\sqrt{(-6)^2-4\cdot 1 \cdot (4)}}{2 \cdot 1}$

$\Rightarrow x=\frac{6\pm\sqrt{20}}{2}$

$\Rightarrow x=\frac{6\pm 2\sqrt{5}}{2}$

$\Rightarrow x={3\pm \sqrt{5}}$

$\Rightarrow x_1={3+\sqrt{5}}$ and $\Rightarrow x_2={3-\sqrt{5}}$

We know $\sqrt{5}=2.23607$ (approx)

Substitute, we get,

$\Rightarrow x_1={3+2.23607}$ (approx) and $\Rightarrow x_2={3-2.23607}$ (approx)

$\Rightarrow x_1={5.23607}$ (approx) and $\Rightarrow x_2=0.76393}$ (approx)

Thus, the two root of the given quadratic equation $x^2+4=6x$ is 5.24 and 0.76 .

7 0

2 years ago

Read 2 more answers

(-(-2)4), (minus(minus two)power four)=

docker41 [41]

-(-2)^4 = 16

The - sign multiplies inside the bracket to a positive, 2^4 = 16

7 0

3 years ago

Q1. An airplane flies with a constant speed of 600 miles per hour. How far can it travel in 3 1/2 hours?

Dahasolnce [82]

Answer:

Q1. 1050 miles

Q2. 1h 30m

Step-by-step explanation:

Q1. 1h = 300 miles

3 $\frac{1}{2}$ h = 3.5 × 300 miles

= 1050 miles

Q2. 68km = 1h

102km = $\frac{102}{68}$ × 1h

= 1.5h

= 1h 30m

5 0

3 years ago

What is the value of x to the nearest tenth? gradpoint

Mnenie [13.5K]

Answer:

5

Step-by-step explanation:

6 0

3 years ago

On a March day the temperature changed by an average of -0.5° C per hour from its high of 5° C at 1:00 pm. What was the temperat

pychu [463]

0°? seems like it if you were to sub 0.5 ten times from 5

5 0

2 years ago