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3 years ago

PLEASE ANSWER WILL MARK BRAINLIEST!

Mathematics

2 answers:

Vladimir79 [104]3 years ago

3 0

Answer:

3 and 4 can i please get brainliest i need one more to rank next level

Step-by-step explanation:

Kobotan [32]3 years ago

3 0

The answer is 3 and 4

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Find the value of x. 5X° (7X+9) 27°

ratelena [41]

Answer:

If f(x) = x2 – 5 for all values x and f(a) = 4, what is one possible value of a? Possible Answers: ... If f(x) = x2 + 5x and g(x) = 2, what is f(g(4))?. Possible ... (1/3) * (27 + 15 – 15). (1/3) * (27)

4 0

3 years ago

Let g(x) = log7 (x), find g ¹(0)

klasskru [66]

Step-by-step explanation:

The derivative of log is

$\frac{d}{dx} ( log_{a}(x) ) = \frac{1}{x \: ln(a) }$

You can easily derive this using the Change of base rule, and natural log rules

$log_{a}(x) = \frac{ log_{e}(x) }{ log_{e}(a) } = \frac{ ln(x) }{ ln(a) }$

Next, we differentiate with respect to x.

$\frac{d}{dx} \frac{ ln(x) }{ ln(a) } = \frac{1}{ ln(a) } \times \frac{d}{dx} ln(x)$

$= \frac{1}{x ln(a) }$

So back to the topic at hand,.

a=7, so we get

$\frac{1}{x ln(7) }$

We plug in 0, we would get undefined

6 0

2 years ago

1+1=? What is the answer I don’t know

DochEvi [55]

Possibly 2 maybe 3 XD

7 0

3 years ago

HELP ASAP!! I will give brainliest if correct

Natasha_Volkova [10]

Answer:

One of the angles is 42 degrees the other one is the same.

To find the missing angle you need to subtract the 2 angles with 90 and what you get is the missing angle so

42 - 42 - 90 = 90

I believe this is the right answer my bad if its not

3 0

3 years ago

Use Laplace transforms to solve the initial value problem, then give the value of x(?).

Sophie [7]

Answer:

x = 5 cos 2t

Step-by-step explanation:

given equation

x'' + 4x = 0 ; x(0) = 5, x'(0) = 0

L{ x'' + 4 x } = 0

L{x''} + 4 L{x} = 0

s² . L(x) - s . x(0) - x'(0) + 4 L{x} = 0

( s² + 4 ). L(x) - 5 s = 0

L(x) = $\dfrac{5s}{s^2 +4}$

$L(\dfrac{s}{s^2 +a^2})$ = cos at

so,

x = 5 $L^{-1}(\dfrac{s}{s^2 +2^2})$

x = 5 cos 2t

5 0

4 years ago