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3 years ago

14

Each side of a square is increasing at a rate of 3 cm/s. at what rate is the area of the square increasing when the area of the

square is 16 cm2?

1 answer:

deff fn [24]3 years ago

3 0

The squares length is increasing by 5.33 cm/ s

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If x = 5, y = 2 and z = 3 then xz (4y - 2z) is

WARRIOR [948]

(4x2-2x3)
(8-6)
xz=2

Hope this helps!

4 0

3 years ago

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A tunnel is 300 feet deep and makes an angle of 30 with the ground .

Goshia [24]

Answer:

$\boxed{C.\:\: 600\:feet}$

Step-by-step explanation:

The tunnel, the ground and the depth of the tunnel form a right angle triangle.

The length of the tunnel is the hypotenuse of the right triangle that has been formed.

Let the length of the tunnel be $m\: feet$ .

Using the sine ratio, we obtain;

$\sin(30\degree)=\frac{Opposite}{Hypotenuse}$

The length of the opposite side is $300\:feet$

We substitute the given values to obtain;

$\sin(30\degree)=\frac{300}{m}$

$\Rightarrow \frac{1}{2}=\frac{300}{m}$

We cross multiply to obtain;

$m=300\times2$

$m=600\:feet$

Therefore the correct answer is C.

4 0

3 years ago

Wang Yong owes the bank \$8500$8500dollar sign, 8500. To repay the debt, he paid a fixed amount back to the bank each month. Aft

34kurt

Complete question :

Wang Yong owes the bank $8500. To repay the debt, he paid a fixed amount back to the bank each month. After 12 months, his remaining debt was $6460. How much did Wang Yong pay each month?

Answer:

$170

Step-by-step explanation:

Given that:

Amount owed = $8500

Fixed amount replayed per month :

Amount left after 12 months = $6460

Amount paid per month :

Total amount paid over 12 months :

$(8500 - 6460) = $2040

Amount paid per month :

$2040 / 12

= $170

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3 years ago

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Which of the following is an example of a sentence fragment?

igomit [66]

I believe it is "Because I don't drive." The person writing the sentence never started it off properly.

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3 years ago

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B-30.45=95.28 what is the answer

mixer [17]

Answer:

$B = 125.73$

Step-by-step explanation:

<u>Step 1: Add 30.45 to both sides</u>

<u /> $B - 30.45=95.28$

$B +(- 30.45 + 30.45)=(95.28 + 30.45)$

$B = 125.73$

Answer: $B = 125.73$

6 0

3 years ago