3 years ago

Multiply (x+2y)(x^2-xy+3y)

Mathematics

1 answer:

Sergeeva-Olga [200]3 years ago

8 0

Answer:

-2xy^2+x^2y+x^3+6y^2+3xy

Step-by-step explanation:

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boyakko [2]

Answer:

$(x,y) =(-4,-3)$ --- Vertex

$x = -4$ --- Axis of symmetry

Step-by-step explanation:

Given

$y = -6(x + 4)^2 - 3$

Solving (a): The vertex

For an equation written in

$y = a(x - h)^2 + k$

The vertex is:

$(x,y) = (h,k)$

By comparison:

$y = a(x - h)^2 + k$ and $y = -6(x + 4)^2 - 3$

$-h =4$ $k = -3$

$h =-4$ $k = -3$

So, the vertex is:

$(x,y) =(-4,-3)$

Solving (b): The axis of symmetry

For an equation written in

$y = a(x - h)^2 + k$

The axis of symmetry is:

x = h

In (a):

$h =-4$

So:

$x = -4$

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3 years ago

What is the standard form of the number shown in the calculator display?

LenaWriter [7]

3.82 x 10⁷ = 38,200,000 (move the decimal 7 places to the right)

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3 years ago

a jar containing 100 pennies is dumped onto a table, and all those coming up heads are removed. The remaining pennies are placed

lakkis [162]

Sorry, but there is no table to the right. Please put the table.

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4 years ago

The price of a gallon of milk increased from $5.50 to $7.50. Describe the price increase as a percent.

sweet [91]

Step-by-step explanation:

7.50= (1 + x/100 ) × 5.50

7.50/ 5.50 = 1+x/100

x/100 = 0.36

x= 36.36%

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3 years ago

5\2,3 and 3\2,8 find the distance

pochemuha

Answer:

√26 ≈ 5.1 units

Step-by-step explanation:

√(x₂ - x₁)² + (y₂ - y₁)²

√(3/2 - 5/2)² + (8 - 3)²

√(-1)² + (5)²

√1 + 25

√26

4 0

4 years ago