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zhenek [66]
3 years ago
13

Factor x2 + 11x + 30.

Mathematics
1 answer:
andrey2020 [161]3 years ago
6 0

Answer:

  (x +5)(x +6)

Step-by-step explanation:

You're looking for two factors of 30 that total 11.

  30 = 1×30 = 2×15 = 3×10 = 5×6

5+6 = 11, so those are the numbers you want in the binomial factors.

  x^2 +11x +30 = (x +5)(x +6)

_____

<em>Additional comment</em>

You will notice that ...

  (x +a)(x +b) = x^2 +(a+b)x +ab

The constant is the product of the factor constants, and the x-coefficient is their sum.

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Evaluate the polynomial for the given value of x: f(x) =3x^3+5x^2+x-2 when x=2
sasho [114]

Answer: f(2)=44

Step-by-step explanation:

Given the polynomial f(x) =3x^3+5x^2+x-2, you can evaluate it for the given value of the variable "x" by substituting the value x=2 into the polynomial.

Therefore, when x=2,  you get the following result:

f(x) =3x^3+5x^2+x-2 \\\\f(2) =3(2)^3+5(2)^2+(2)-2\\\\f(2)=3(8)+5(4)+2-2\\\\f(2)=24+20\\\\f(2)=44

3 0
3 years ago
Write a whole number that rounds to 700,000 if we are rounding to the nearest hundred thousand.
sasho [114]
I think 1,000,000 or 800,000 
6 0
3 years ago
ILL GIVE BRAINLIEST IF YOU GET IT RIGHT AND EXPLAIN
koban [17]

Answer:

y = 2

x = 50

Step-by-step explanation:

We can first find y by doing 12y+5 = 18y-7 since vertical angles are always congruent.

We want to combine like terms so we subtract 12y from both sides (what you do on one side needs to be done to the other) and we get 5 = 6y-7 and now we add 7 to both sides to get 12 = 6y.

Like I said we did this because we combine like terms!!!

Now we want to isolate the y and we do this by dividing 6 from both sides which lets us get 2 = y

Now that we know what y is we can plug it into any of the equations using y.

I plugged it into the top right equation cause it was easier.

12(2)+5

24+5

29!

That angle is 29!

Now that we know that we can begin solving for x.

The equation that has x + 29 make 180 degrees because it is a straight line so we use this to solve for x!

3x+1+29=180 (We want to start combining like terms now)

3x+30=180(Subtract 30 from both sides)

3x=150 (Isolate the x by dividing 3 from both sides)

x=50!

We can prove this is right by inserting x into it's expression. That tells us the angle is 151. Now we add 151+151+29+29 and we get 360!

4 0
3 years ago
Solve
Jobisdone [24]

Answer:

I = p× r× t

300×8×4

pinicipal × rate × time

That is the formula

the answer is 300×8×4= 9600

8 0
3 years ago
7xi + 3(x - 2) - 4x + 8 simplify
Irina-Kira [14]

Answer:

Step-by-step explanation:

the answer is 12x - 5

4 0
3 years ago
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