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aliya0001 [1]
3 years ago
6

tim saw some monkey's sitting in trees at the zoo there were monkeys sitting in each tree. there were 24 monkeys in all. how man

y trees were there?​
Mathematics
1 answer:
telo118 [61]3 years ago
4 0

Answer:

there needs to be more detail

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A rectangular area of 36 f t2 is to be fenced off. Three sides will use fencing costing $1 per foot and the remaining side will
OLga [1]

Answer:

x = 8,49 ft

y  = 4,24  ft  

Step-by-step explanation:

Let  x be the longer side of rectangle   and  y  the shorter

Area of rectangle     =    36 ft²     36  =  x* y   ⇒ y =36/x

Perimeter of rectangle:

P  =  2x   +   2y    for convinience we will write it as    P  = ( 2x + y ) + y

C(x,y)   =  1 * ( 2x  +  y  )  +  3* y

The cost equation as function of x is:

C(x)  =  2x  + 36/x   + 108/x

C(x)  =  2x  + 144/x

Taking derivatives on both sides of the equation

C´(x)  = 2  - 144/x²

C´(x)  = 0         2  - 144/x² = 0       ⇒  2x²  -144 = 0    ⇒  x² =  72

x = 8,49 ft       y  = 36/8.49    y  = 4,24  ft    

How can we be sure that value will give us a minimun

We get second derivative

C´(x)  = 2  - 144/x²      ⇒C´´(x)  = 2x (144)/ x⁴

so C´´(x) > 0

condition for a minimum

7 0
3 years ago
Evaluate:<br> 2 - (-9) + (-18) / 3 x 2 -10
Gre4nikov [31]

Answer:

Step-by-step explanation:

2+9-18/3x2-10

Lets follow order of ops.

/, x, +, -

Divide first.

2 + 9 - (18/3) x 2 - 10

2+9-6x2-10

Now we multiply.

2+9-(6x2)-10

2+9-12-10

Add.

11-22

Now subtract.

11-22=-11

---

hope it helps

5 0
3 years ago
HELP HELP HELP HELP help help
SVETLANKA909090 [29]

Answer:

r  = 6

Step-by-step explanation:

To get the value of r we will use the pythagoras theorem a shown;

PR² = QR² + PQ²

(4+r)² = 8² + r²

Expand

16+8r+r² = 64 + r²

16 + 8r = 64

8r = 64 - 16

8r = 48

r = 48/8

r = 6

Hence the value of r is 6

7 0
3 years ago
I need help!! will any one be a good friend and help me?
otez555 [7]

Answer:

What kind of help you want ?

7 0
3 years ago
Read 2 more answers
3<br> What is 27x + 8<br> ——————-<br> 3x-2
marissa [1.9K]

Answer:

34 Step-by-step explanation:

6 0
3 years ago
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