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likoan [24]
3 years ago
7

What is (3x+5)(x^2+6x+11)

Mathematics
1 answer:
serg [7]3 years ago
3 0

Answer:

\large\boxed{3x^3+23x^2+63x+55}

Step-by-step explanation:

\text{Use FOIL:}\\\\(a+b)(c+d)=ac+ad+bc+bd

(3x+5)(x^2+6x+11)\\\\=(3x)(x^2)+(3x)(6x)+(3x)(11)+(5)(x^2)+(5)(6x)+(5)(11)\\\\=3x^3+18x^2+33x+5x^2+30x+55\qquad\text{combine like terms}\\\\=3x^3+(18x^2+5x^3)+(33x+30x)+55\\\\=3x^3+23x^2+63x+55

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it is 42 1/2 miles from eaton to baxter, and 37 4/5 miles from baxter to Wellington. how far is it from eaton to Wellington, if
patriot [66]
Our Given information is:

Easton >> Baxter = 42.5 miles
Baxter >> Wellington = 37.8 miles

Therefore, if we wanted to find how far it was from Eaton to Wellington, assuming that we went by way of Baxter, all we would have to do is add the mileage amounts together.

42.5 + 37.8 = 80.3

Therefore, it is 80.3 or 80 3/10 miles from Eaton to Wellington by way of Baxter.
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Step-by-step explanation:

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She has 6 green picks, because 2*6=12.

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3 years ago
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The numbers x and y are inversely proportional. When the sum of x and y is 42, x is twice y. What is the value of y when x = -8?
dolphi86 [110]

Answer:

y= -4

Step-by-step explanation:

x+y=42.   We know that x plus y equals 42.

x=2y .   We also know that x equals twice y.

2y+y=42.   Since we know that x=2y, we're going to replace x with 2y from the original equation, simplified would be 3y=42.

y=14.   3y=42 simplified is y=14, this is because we divided both sides by 3 (since 3 and 42 are both divisible by 3) (btw divisible by 3 simply means that it can be divided by 3)

x+14=42.   Now that we know what y equals, let's replace y with 14 from the original equation.

x=28.  Now that we know that x=28 and y=14, we know that y is always x/2.

When x=-8, we divide it by 2 and get, -4.

Not absolutely positive as this was all mental math, but hope this helps! :)

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3 years ago
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