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frez [133]
2 years ago
12

Compare the numerical expressions.

Mathematics
1 answer:
lord [1]2 years ago
5 0

Answer + Step-by-step explanation:

<u>24 + 7 and 9×(24+7)</u>

      31 and 9 x (31)

      31 and 279

the number is multiplied by 9

<u>12 - 7 and 4x(12-7)</u>

      5 and 4 x (5)

      5 and 20

the number is multiplied by 4

<u>3×(21 + 4) and 21 + 4</u>

3 x (25) and 25

        75 and 25

the number is multiplied by 3

making the left side 3 times larger

<u>40 × 5 and 40 × 20​</u>

   200 and 800

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olchik [2.2K]

Step-by-step explanation:

Perimeter = x + 2x + 2x = 5x

Since 5x <= 46.8cm, x <= 9.36cm.

The largest base is 9.36cm.

7 0
3 years ago
Read 2 more answers
A bird flies at 12.5 meters per second. The wind speed is 4.5 meters per second.
steposvetlana [31]

Answer: The speed of the bird when it flies against the wind would be 8 meters per second

4 0
2 years ago
What is the square root of:<br><br>a) 58.82<br>b) 10
natka813 [3]
Square root of A= 7.66 ( Took the first 2 numbers after the decimal.)
Square root of B= 3.16 (Took the first 2 numbers after the decimal.)
HOPE THIS HELPS! ^_^
7 0
3 years ago
X+y+z =4
cestrela7 [59]
<span><span> <span>Akar akar persamaan kuadrat 2x² - 3x -1 = 0 adalah x1 dan x2. Persamaan kuadrat baru yang akar akarnya satu lebih kecil dari dua kali akar akar persamaan kuadrat di atas adalah ........</span></span><span><span><span>A.x² - x - 4 = 0</span><span>B.x² + 5x - 4 = 0</span><span>C.x² - x + 4 = 0</span></span><span><span>D.x² + x + 4 = 0</span><span>E.x² - 5x - 4 = 0</span></span></span><span>Jawaban : A
Penyelesaian : 
Akar-akar persamaan lama :  x1 dan x2
                                             
Akar-akar persamaan baru :  xA dan xB
                                             xA = 2x1 - 1
                                             xB = 2x2 - 1
                                             xA + xB  = (2x1 - 1) + (2x2 - 1)
                                                           = 2 (x1 + x2) - 2
                                                           = 2 () - 2
                                                           = 3 - 2
                                              xA + xB = 1
    
                                              xA . xB = (2x1 - 1) (2x2 - 1)
                                                          = 4 x1.x2 - 2(x1 + x2) + 1
                                                          = 4.(-) - 2() + 1
                                                          = -2 - 3 + 1
                                              xA . xB = -4
    
Jadi persamaan kuadrat baru : x² - (xA + xB)x + xA . xB = 0
                                              x² - x - 4 = 0

</span></span>
4 0
3 years ago
Which ordered pair represents the y-intercept of the graph of the equation y = -5x + 6?
Sonja [21]

The answer is A (0,6)


3 0
3 years ago
Read 2 more answers
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