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3 years ago

Answer with figure if needed.random answer will be reported.

Mathematics

1 answer:

max2010maxim [7]3 years ago

8 0

10m/s

32m/s

83m/s

None of these

Answer :

Solution :

At any instant x2+y2=52

Differentiating w.r.t. time 2xxdt+2ydydt=0

Here dxdt=2,dydt=u⇒u=83m/s

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A new Youth Activity Center is being built in Hadleyville. The perimeter of the rectangular playing field is 430 yards. The leng

scoundrel [369]

Answer:

Width = 44 yards

Length = 171 yards

Step-by-step explanation:

Given:

Perimeter of the rectangular field = 430 yards.

Let:

The length of the field be L

The width of the field be W.

From the question:

The length of the field is 5yards less than quadruple the width. This implies that;

L = 4W - 5

But.

Perimeter (P) of a rectangle is given by:

P = 2(L + W) ---------------(i)

Substitute the values of P = 430, L = 4W - 5 and W into equation (i) as follows;

430 = 2(4W - 5 + W)

430 = 2(5W - 5)

430 = 10W - 10

10W = 430 + 10

10W = 440

Divide both sides by 10

W = 44

Therefore, the width of the field is 44 yards.

Remember that,

L = 4W - 5

[Now substitute W = 44]

L = 4(44) - 5

L = 176 - 5

L = 171

Therefore, the length of the field is 171 yards

8 0

3 years ago

9. Which of the following is a prime number? a. 61 b. 39 C. 60 d. 145

malfutka [58]

Answer:

The prime number is 61

Step-by-step explanation:

Hope this helps.

Good luck

5 0

3 years ago

Read 2 more answers

7 - 4w = 10w What is variable w

morpeh [17]

$7 - 4w = 10w \\ \\ 7 = 10w + 4w \\ \\ 7 = 14w \\ \\ \frac{7}{14} = w \\ \\ \frac{1}{2} = w \\ \\ w = \frac{1}{2} \\ \\$

The final result is: w = 1/2 or w = 0.5.

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3 years ago

Nadia wants to fill her rectangular fish tank with water. The dimensions of the fish tank are 2x 1x 1.5. How much water will Nad

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Nadia needs 3 to fill up the tank. Because volume is base x width x height, just multiply the dimensions to find the volume.

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3 years ago

The lifetime of a certain type of battery has a mean value 20 hours and standard deviation 3 hours. A bulk package of these batt

vodka [1.7K]

Answer:

The distribution of average life time is approximately normallyl distributed with mean 20 hours and standard deviation of 0.4743 hours

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this problem

$\mu = 20, \sigma = 3, n = 40, s = \frac{3}{\sqrt{40}} = 0.4743$

The distribution of average life time is approximately normallyl distributed with mean 20 hours and standard deviation of 0.4743 hours

8 0

4 years ago

Answer with figure if needed.random answer will be reported.​

Answer with figure if needed.random answer will be reported.