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3 years ago

(04.04)

Mathematics

1 answer:

Nata [24]3 years ago

4 0

Answer:

Its none of them pick F

Step-by-step explanation:

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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

4 years ago

-3/4 + 1 1/4 plssss help me !!

GaryK [48]

$\text {Hey! Let's Solve this Problem!}$

$\text {The First Step is to Convert 1 1/4 into an Improper Fraction:}$

$\text {Multiply 1*4 and get 4. Now add 1 and get 5.}\\\text {1 1/4 = 5/4}$

$\text {The Final Step is to Add:}$

$\text {-3/4+5/4=}$

$\text {Your Answer would be:}$

$\fbox {1/2}$

$\text {Best of Luck!}$

$\text {-LimitedX}$

6 0

3 years ago

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Please help, The first one to answers gets 10 points

babymother [125]

Answer:

6.75-2.33-1.75=2.67 hours

Step-by-step explanation:

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3 years ago

What is 211,670,000 in scientific notation? :)

Dmitrij [34]

Answer:

2.1167×10⁸

Step-by-step explanation:

Hopefully I'm correct but we're just learning this subject so sorry if wrong

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3 years ago

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89 students enrolled in Ms. Satterstrom's math course were surveyed. They were asked "What would you rather have for dinner?", t

Sindrei [870]

Answer:

Step-by-step explanation:

The answer is B branlist???

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3 years ago

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