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melamori03 [73]

2 years ago

10

Please help me I will give a brainless

1 answer:

Harman [31]2 years ago

8 0

Answer:

x E = R

the statement is true for any value of x, because both sides are identical.

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If f(x) = ||x|| , find f(−14)

bogdanovich [222]

Answer:

14

Step-by-step explanation:

f(-14) = ||-14|| = |14| = 14

3 0

2 years ago

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Add or subtrack<br>1. -16 +21<br>2.-13--12<br>3.-23-(-8)

konstantin123 [22]

Answer:

1. subtract

2. add

3. add

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3 years ago

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BRAINLIESTTT ASAP! PLEASE HELP ME :)

cupoosta [38]

<em>See above information</em>

I am joyous to assist you anytime.

* Since you are in a hurry, check out this link for more information:

brainly.com/question/12725478?utm_source=android&utm_medium=share&utm_campaign=question

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3 years ago

5x + 16 = 9x-4 plz solve

RSB [31]

*Answer:*
x = 5

*step-by-step solution*

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3 years ago

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A square with side x is changing with time where x(t)=3t+1. What is rate of change of the area of the square when t=2 seconds.

GuDViN [60]

Answer:

Rate of change of the area of the square is 42 units at t = 2.

Step-by-step explanation:

We note that the area of the square is given by: $A(x) = x^2$ but we aim to find $\frac{dA}{dt}$ . But we can use the chain rule to pull out that dA/dt. Doing so gives us:

$\frac{dA}{dt} = \frac{dA}{dx} \times \frac{dx}{dt}.$

Now, $\frac{dA}{dx} = 2x$ (by the power rule and $\frac{dx}{dt} = 3.$

But since we have "x" and not "t", we want to find what x is when t = 2. Substituting t = 2 gives us x(2) = 3(2) + 1 = 7.

So, finally, we see that:

$\frac{dA}{dt} = 2(7) \times 3 = 14 \times 3 = 42.$

7 0

3 years ago