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S_A_V [24]
3 years ago
12

Please help me !!!

Mathematics
2 answers:
Pie3 years ago
8 0
3. 5mn ( 2m + 6n + 1 )
4. 4a^3b^2c ( 18a^2b - 8c )
5. (X-15)(X+15)
6. -4(y-4.5)(y+4.5)
8. 2X(X-10)(X+10)
i am not sure if no. 8 is right
FromTheMoon [43]3 years ago
4 0
1)~28c-12=4(7c-3)\\\\
2)~x^2y+x=x(xy+1)\\\\
3)~10m^2n+30mn^2+5mn=5mn(2m+6n+1)\\\\
4)~72a^5b^3c-32a^3b^2c^2=8a^3b^2c(9a^2b-4c)\\\\
5)~x^2-225=(x-15)(x+15)\\\\
6)~81-4y^2=(9-2y)(9+2y)\\\\
7)~9k^4-25=(3k^2-5)(3k^2+5)\\\\
8)~2x^3-200x=2x(x^2-100)=2x(x-10)(x+10)\\\\
9)~72y^4-18y^2=18y^2(4y^2-1)=18y^2(2y-1)(2y+1)\\\\
10)~49x^3-xy^2=x(49x^2-y^2)=x(7x-y)(7x+y)
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Which expression is equivalent to 6⋅6⋅6?<br><br> 36<br><br> 6³<br><br> 66
devlian [24]

Answer:

6^3

Step-by-step explanation:

6^3 is the same as 6*6*6

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2 years ago
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alina1380 [7]

Answer:

<em>(C). g(x) = ( </em>\frac{1}{4}<em> x )² </em>

Step-by-step explanation:

The correct answer is <em>(C). g(x) = ( </em>\frac{1}{4}<em> x )²</em>

7 0
3 years ago
Which Of the following is the solution to 4|x+3|&gt;8?
Shalnov [3]
Too bad you haven't shared illustrations of the possible solutions.

Starting with   4|x+3|>8, div. both sides by 4:     <span>|x+3|>2

Case 1:  x+3 is already positive:  then x+3>2, or x > -1

Case 2:  x+3 is negative:  Then -(x+3)>2, or -x - 3 > 2, or -5>x or x<-5

Draw a number line representing x values.  Place empty circles at x = -5 and x = -1.  Draw a vector from the circle at x = -1, to the right of x = -1.  Draw a vector from the circle at x = - 5, to the left of x = -5.  Note that x values between x = -5 and x = -1 are not solutions.</span>
5 0
2 years ago
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geniusboy [140]

Answer:

ok

Step-by-step explanation:

7 0
3 years ago
Lin has a scale model of a modern train. The model is created at a scale of 1 to 48.
satela [25.4K]

Answer:A

1/48 = 102/ ???

1 × 102 = 102

48 × 102 = 4896 mm, or 4.896 m

B

1 inch = 25.4 mm

1/48 = 1 and one fourth in/54 in

54 ÷ 1 1/4 = 43

43 ≠ 48

The train can't drive on the tracks.

Step-by-step explanation:

3 0
3 years ago
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