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Vaselesa [24]
3 years ago
13

Evaluate the expression 2ab3 + 6a3 - 4ab2 when a = 2 and b = 4.

Mathematics
2 answers:
evablogger [386]3 years ago
7 0
2(2)(4)3+6(2)3-4(2)(4)2
   48      +  36  -  64
          74         -  64
                 = 10 




nalin [4]3 years ago
3 0
2(2x4)3 + 6(2)3 - 4(2x4)2
 (4x8)3 + (12)3 - (8x16)2
  (32)3 + (12)3 - (128)2
        96 + 36 - 256
              -124
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There was a 340,000 cattle placed on feed. Write an equivalent ration that could be used to find how many of these cattle were b
ioda

An equivalent ratio would be 4/10, and the number of cattle would be 136,000.Explanation:The question asks for an equivalent ratio. This means a fraction that is equivalent to the fraction between 700-799, which is 2/5.To create an equivalent fraction, we multiply the numerator and denominator by the same number. Multiplying both by 2, we get (2*2)/(5*2) = 4/10.Tenths are useful when dealing with thousands, because taking a tenth involves getting rid of a zero. This means that 1/10 would be 34000; 4/10 would be 4 times that: 4(34000) = 136000.


Read more on Brainly.com - brainly.com/question/200236#readmore

7 0
3 years ago
Match the proper noun to the common noun.
egoroff_w [7]
Uncle peter-relative

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3 0
2 years ago
Read 2 more answers
Urgenttttt please I need it fast​
dolphi86 [110]

Answer:

Below in bold.

Step-by-step explanation:

c) 3 x (9^2)^3/4 x ((81^3)^5/6

= 3 x 81^3/4 x 81^15/6

= 3 x 81^(3/4 + 15/6)

= 3 x 81^13/4

= 3 x 3^13

= 3^14

= 4,782,969.

f) (5x^-1y^2)^-2 / (25 x^2 y - 1)^2

=  5^-2 x^2y^-4 / 625 x^4y^-2

=  5^-2 x^-2 y^-2 / 5^4

= 5^-6 x^-2y^-2

= 0.000064x^-2y^-2.

5 0
3 years ago
Solve the system y = -x + 7 and y = -0.5(x - 3)^2 + 8.
AlladinOne [14]

Answer:

(1,6) & (7,0)

Step-by-step explanation:

y = -x + 7

y = -0.5(x - 3)² + 8

To solve the system, solve these two equations simultaneously

-x + 7 = -0.5(x - 3)² + 8

-x + 7 = -0.5(x² - 6x + 9) + 8

-x + 7 = -0.5x² + 3x - 4.5 + 8

0.5x² - 4x + 3.5 = 0

x² - 8x + 7 = 0

x² - 7x - x + 7 = 0

x(x - 7) - (x - 7) = 0

(x - 1)(x - 7) = 0

x = 1, 7

y = -1 + 7 = 6

y = -7 + 7 = 0

(1,6) (7,0)

Since the system has two distinct solutions, the line and the curve meet at two distinct poibts9: (1,6) & (7,0)

8 0
3 years ago
Use the gcf to create an equivalent expression 18y + 24
Virty [35]

Answer:

The gcf is 6.

so

we can divide by 6 on both sides to create

6(3y + 6)

Step-by-step explanation:

3 0
3 years ago
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