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Reptile [31]
3 years ago
6

Tìm cực trị của hàm số z(x,y)=x^{3}+y^{3}+3xy-30

Mathematics
1 answer:
gregori [183]3 years ago
3 0

Answer:

Hence, MEAN OF FIRST FIVE COMPOSITE NOS IS 7.5

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A theme park has a Ferris wheel that takes 2 minutes to go around its 450-foot circumference. The equation · (130) = 450 relates
olchik [2.2K]

Answer: The Ferris wheel’s speed in feet per hour.

Step-by-step explanation:

3 0
3 years ago
Diagram shows a framework consisting of 16 wooden rods. The length of each rod is 8 cm.
Umnica [9.8K]

Answer:

1024 cm²

Step-by-step explanation:

There are 16 rods.  A square has 4 equal sides, so each side must consist of 4 rods.  The length of each rod is 8 cm, so the length of each of the square's sides is 32 cm.  Therefore, the area of the square is:

A = s²

A = (32 cm)²

A = 1024 cm²

8 0
3 years ago
Solve problems 3, 7, 15, 17, 19, 20, 21
7nadin3 [17]
3. | -9 | = 9

7. - | -5 * -7 | = - | 35 | = -35

15. | m + 3 | = 7
    
      m + 3 = 7          -(m + 3) = 7
      m = 7 - 3           -m - 3 = 7
      m = 4                -m = 10
                                m = -10

       so m = 4 and m = -10

17. | -3d | = 15
  
      -3d = 15               -(-3d) = 15
         d = 15/-3               3d = 15
         d = - 5                    d = 15/3
                                        d = 5
     
         so d = 5 and d = -5

19. | 4b - 5 | = 19
  
      4b - 5 = 19             -(4b - 5) = 19
      4b = 19 + 5            -4b + 5 = 19
      4b = 24                   -4b = 14
        b = 24/4                  b = 14/-4
        b = 6                       b = - 7/2

         so b = 6 or b = -7/2

20. | x - 1 | + 5 = 2
      | x - 1 | = 2 - 5
      | x - 1 | = -3
There is no solution on this one because an absolute value cannot equal a negative number

21. -4 | 8 - 5n | = 13
          | 8 - 5n | = - 13/4
  There is also no solution for this one because of the same reason...absolute values cannot equal negative numbers
8 0
3 years ago
Solve using the standard algorithm the area model the distributive property or the partial products method 2,809x4
Assoli18 [71]

Answer:

11,236

Step-by-step explanation:

i think this might be the answer but if it not alseat I try helping

5 0
3 years ago
Solve the following question
emmasim [6.3K]

Answer:

16 and 4

Step-by-step explanation:

Let (x+y) =20 and (x-y)=12 then:

Isolate for x in each equation

   x=20-y and x=12+y

Set the equations to equal each other since the value of x should be the same for both

   20-y = 12+y

Rearrange so that y is on one side and the numbers are on the other

   8 = 2y

   y= 8/2

   y= 4

Now  substitute the y- value back into either of the original equations

   x+y= 20

   x+4 = 20

Rearrange and isolate  x

   x = 20-4

   x = 16

So the two values are 16 and 4

5 0
3 years ago
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