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maria [59]
2 years ago
7

Devon writes a number pattern. He starts with 3 and follows the rule “multiply by

Mathematics
1 answer:
Fed [463]2 years ago
3 0

Answer:

3,6,12,24.48,96,192

Step-by-step explanation:

You might be interested in
Show work and Factor 4x^2+xy-18y^2
grigory [225]

Answer:

4x^2+xy-18y^2=(4x+9y)\,(x-2y)

Step-by-step explanation:

Let's examine the following general product of two binomials with variables x and y in different terms:

(ax+by)\,(cx+dy)= ac\,x^2+adxy+bcxy+bdy^2

so we want the following to happen:

a\,c = 4\\ad+bc=1\\bd--18

Notice as well that ad+bc =1 means that those two products must differ in just one unit so, one of them has to be negative, or three of them negative. Given that the product bd=-18, then we can consider the case in which one of this  (b or d) is the negative factor. So let's then assume that a\,\,and \,\,c are positive.

We can then try combinations for  a\,\,and \,\,c  such as:

a = 4;\,\,c=1\\a=2;\,\,c=2\\a=1;\,\,c=4

Just by selecting the first one (a=4;\,\,c=1)

we get that 4d_b=1\\b=-4d-1

and since

bd=-18\\(-4d-1)\,d=-18\\-4d^2-d=-18\\4d^2+d-18=0

This quadratic equation give as one of its solutions the integer: d = -2, and consequently,

d=-18/(-2)\\d=9

Now we have a good combination of parameters to render the factoring form of the original trinomial:

a=4; \,\,b=9;\,\,c=1;\,\,d=-2

which makes our factorization:

(4x+9y)\,(x-2y)=4x^2+xy-18y^2

6 0
2 years ago
Is the given expression equal to – 0.4(3x + 8)? Select Yes or No for each expression.
beks73 [17]
-3x - 3.2 no
-1.2-8 no
-1.2x-3.2 yes
-1.2x+3.2 no
4 0
2 years ago
Read 2 more answers
there are 28 books on the shelf.one-fourth of the books are about animals. two are adventure. the rest are mystery.How many book
yanalaym [24]

Answer:

19

Step-by-step explanation:

1/4 are animal. 28/4 = 7

2 are adventure.

7+2 = 9

9 are not mystery

28-9 = 19

19 are mystery.

4 0
3 years ago
Y = -I - 2<br> y +2 = -2
bixtya [17]
Y=-4 and y=-3
-4 is for the y+2=-2
And
Y=-1-2 is -3
8 0
3 years ago
What will it cost to tile a rectangular floor measuring 299 feet by 34 feet if the tile costs $11 per square foot?
dexar [7]

Area = 299*34 = 10166 ft^2


Cost = 10166 * 11 = $111,826 (answer)

3 0
3 years ago
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