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Artist 52 [7]
3 years ago
10

Use the following information to find x. Write the value of the variable.

Mathematics
1 answer:
zhuklara [117]3 years ago
3 0

Step-by-step explanation:

can you elaborate on this problem a bit more? I just want to give you an accurate anwser

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louise bought 80 metres of fencing to make an enclosure for her pet dog .tommy if louise expects a rectangular enclosure what is
OleMash [197]

Answer:

400 m^2.

Step-by-step explanation:

The largest  area is obtained where the enclosure is a square.

I think that's the right answer because a square is a special form of a rectangle.

So the square would be 20 * 20  = 400 m^2.

Proof:

Let the  sides of the rectangle be x and y m long

The area A = xy.

Also the perimeter  2x + 2y = 80

x + y = 40

y = 40 - x.

So substituting for y in A = xy:-

A = x(40 - x)

A = 40x - x^2

For maximum value of A  we find the derivative and equate it to 0:

derivative A' =  40 - 2x = 0

2x = 40

x = 20.

So y = 40 - x

= 40 - 20

=20  

x and y are the same value so x = y.

Therefore for maximum area the rectangle is a square.

3 0
3 years ago
Put yourself in the shoes of the lender: why is information on application important
Wittaler [7]
Because if you don’t put anything they won’t hire you
5 0
3 years ago
Read 2 more answers
Suppose that the number of bacteria in a certain population increases according to an exponential growth model, with a growth ra
podryga [215]

Answer: 5489

Step-by-step explanation:

Given the following :

Growth rate (r) = 19% per hour

Sample culture in population = 2300

Size of sample after 5 hours =?

Using the exponential relation:

P = Po * r^t

P = population after 5 hours

Po = Initial sample population

t = time

P = 2300 * (1 +19%)^t

P = 2300 ×(1 + 0.19) ^5

P = 2300 * 1.19^5

P = 2300 * 2.3863536599

P = 5488.61341777

P = 5489 (nearest integer)

4 0
3 years ago
Spud's mom is going to make him a round birthday cake, and has asked for your help. Spud is a bit weird, and has already
joja [24]

Answer:

16 x 16 = 256

Step-by-step explanation:

So 256 might be the answer? this is confusing but are you on IXL?

6 0
3 years ago
Which of the following is a composite number?
ValentinkaMS [17]
The answer to this question is B
3 0
3 years ago
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