3 years ago

Please help 15 points x2≥−4

Mathematics

1 answer:

Nutka1998 [239]3 years ago

6 0

Answer:

Solve for

by simplifying both sides of the inequality, then isolating the variable.

Step-by-step explanation:

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11. An AC waveform has a peak voltage of 50 VAC. What's the

cricket20 [7]

Answer:

Option B - 35.4 VAC

Step-by-step explanation:

Formula for peak voltage is;

V_p = V_rms × √2

Making V_rms the formula, we have;

V_rms = (V_p)/√2

We are given:Peak voltage: V_p = 50 VAC

Where 50 VAC means 50 Volts AC power

Thus;

V_rms = 50/√2

V_rms ≈ 35.4 VAC

So option B is correct

8 0

3 years ago

Math- Differentiation . Could you help me to solve this question?

Arlecino [84]

Answer:

Step-by-step explanation:

Hello, first of all we can find a value for f(1)

$xf(x)+f(x^2)=2 \\\\\text{So for x = 1, it gives}\\\\f(1)+f(1^2)=f(1)+f(1)=2f(1)=2\\\\ f(1) =1$

And we can get the derivative of the equation so.

$(uv)'=u'v+uv' \text{ and } \dfrac{df(x^2)}{dx}=2xf'(x^2) \text{ so we can write}\\\\f(x)+xf'(x)+2xf'(x^2)=0\\\\\text{And then, for x = 1}\\\\f(1)+f'(1)+2f'(1)=0\\\\ f(1)+3f'(1)=0\\\\ 3f'(1)=-f(1)=-1\\\\\large \boxed{ f'(1)=-\dfrac{1}{3} }$

Thank you

4 0

2 years ago

Someone please solve this. If m(x)= x^3 - 5x + 7 & f(x)= 2x - 3 What does: m(-3) - f(-3)

timofeeve [1]

Answer:

-2

step by step

(-3)^3-5(-3)+7-((2(-3)-3))

-27+15+7-(-6-3)

-27+15+7-(-3)

-27+15+7+3

-27+25

=-2

8 0

2 years ago

John has 8 cm pieces of toy train track and Tom has 18 cm pieces of train track. How many of each

Serhud [2]

Answer: 13cm each.

Step-by-step explanation:

8cm +18 cm=26cm

26/2

=13cm

7 0

3 years ago

Read 2 more answers

I am a student in need pls help me

solmaris [256]

Answer:

2*400= 2*400*1

2*400

800

2 x 400 = 2 x 100 x 4

100 x 4

= 400

<u>I hope this helps:</u>

Sorry if it didn't :(

7 0

3 years ago

Read 2 more answers