X^2 + 7x + 12 = 0. i need help finding the answer step by step

Answer:

I want brainliest >:)

Step-by-step explanation:

4 5/6 + 2 4/6 = 6 9/6 = 7 3/6 = 7 1/2 or 7.5

not 8!!!

Answer:

50.32 I think

Step-by-step explanation:

52,13+50,32=102.45

Answer:

x >-2

Step-by-step explanation:

-4(x-1)<12

Divide each side by -4, remembering to flip the inequality

-4/-4(x-1)<12/-4

x-1 > -3

Add 1 to each side

x-1+1 > -3+1

x >-2

open circle at -2  

line extending to the right

Answer:

(D)

Step-by-step explanation:

Solve by graphing:

Use a graphing tool to graph the lines 3x+2y= 12 and 6x + 3y = 21.

The line intercept at (2,3).

Therefore, option D is the correct answer.

Brainiest Appreciated.

Answer:

10x+20y[tex]\leq[/tex]280

x+y[tex]\\\geq[/tex]20

Answer:

Rectangular area as a function of x :   A(x)  = 200*x  + 2*x²

A(max) = 5000 m²

Dimensions:

x = 50 m

l  = 100 m

Step-by-step explanation:

"x" is the length of the perpendicular side to the wall of the rectangular area to be fenced, and we call "l" the other side (parallel to the wall of the barn) then:

A(r) = x* l     and the perimeter of the rectangular shape is

P = 2*x + 2*l   but we won´t use any fencing material along the wll of the barn therefore

P  =  2*x + l       ⇒   200 = 2*x  + l      ⇒   l  = 200 - 2*x      (1)

And the rectangular area as a function of x is:

A(x)  = x * ( 200 - 2*x)  ⇒  A(x)  = 200*x  + 2*x²

Taking derivatives on both sides of the equation we get:

A´(x)  =  200 - 4*x     ⇒   A´= 0

Then    200 - 4*x  = 0     ⇒   4*x =  200   ⇒  x  = 50 m

We find the l value, plugging the value of x in equation (1)

l  = 200 - 2*x     ⇒ l = 200 - 2*50   ⇒  l = 100  m

A(max)  =  100*50

A(max)  = 5000 m²

Answer:

Sorry man i dont know they answer

Step-by-step explanation:

Answer:

The answer is 66 ways .

Step-by-step explanation:

You have to use Combination because it says choosing 10 out of 12 as the position is not important :

12C10 = 66 ways of arrangements

The number of different 10-person teams are 66.

A combination is a mathematical technique for determining the number of potential arrangements in a set of objects where the order of the selection is irrelevant. You can choose the components in any order in combinations. Permutations and combinations are often mistaken.

We have out of the 12 girls who tried out for the softball team, 10 will be chosen for the team.

Using Combination

C(n, r) = n!/ r! (n- r)!

Here n = 12, r= 10

So, C(12, 10)= 12! / 10! (12- 10)!

                   = 12 x 11 x 10! / 10! x 2

                   = 6 x 11

                   = 66

There are 66 10-person teams.

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Answer:

no

Step-by-step explanation:

an equal sign can't be flipped

Answer: no

Step-by-step explanation:

Answer:

-3 I think

Step-by-step explanation:

well 10-7=3 and 13-10=3

but since it is greater number first it would make it a -3

Answer:

Part A:

Luke's original box of cereal costs $2 more than the super-saving brand.

y=9(1) 

y=9

11-9=2

Part B:

y=9(6)

y=54

11x6=66

66-54=12

Luke saves $12 each month if he buys 6 boxes of the super-saving brand. 

pls mark brainliest

Answer:

The correct answer is 11 ft.

Step-by-step explanation:

The diagonals of a parallelogram bisect each other. This means that the portion marked x+4 is the same length as the portion marked 2x-7; this gives us the equation x+4=2x-7.

Subtract x from each side:

x+4-x=2x-7-x

4=x-7.

Add 7 to both sides:

4+7=x-7+7

11=x

Answer:

11

Step-by-step explanation:

On edge

Answer:

BGC

Step-by-step explanation:

They are both on a straight line and add up to 180 degrees.

Step-by-step explanation:

1.)

a(5 x 7)

a(35)

35a

2.)

c + ( 17 + 8)

c + (25)

c + 25

Answer:

Each side is 14 ft.

Step-by-step explanation:

If there are 4 equal sides, you divide 56 by 4. That equals 14.

Answer:

[tex]y=\pm\text{ }i\sqrt{\frac{1}{2}}[/tex]

Step-by-step explanation:

So we first multiply out the parentheses, which turns out to be [tex]-18y^2[/tex]. So our equation is [tex]-18y^2 + 9 = 0[/tex]. We factor out a 9, which turns into [tex]9(2y^2+1)[/tex]. So [tex]2y^2+1=0.[/tex] Solving, we have [tex]y^2=-\frac{1}{2}[/tex], and [tex]y=\pm\text{ }i\sqrt{\frac{1}{2}}[/tex]. I'm sorry everything is so messy, I hope you can still understand.

Answer:

3/20 or 15%

Step-by-step explanation:

Out of 1,2,3,4, and 5, there are 3 prime numbers. This makes the odds of selecting one of those prime numbers 3/5. Then, saying that he does pick a prime number and discards that card, there are now four cards, one of them being the number one. His chances of selecting this card is 1/4.

To find the probability you need to multiply the two probabilities together.

3/5 times 1/4 is 3/20.

So your answer is 3/20 or 15%.

Answer:

First, simplify each square root: √175 , is 175 divisible by a perfect square (other than 1)? So √175=√25×7=√25×√7=5√7 . We cannot further simplfy √7 so we'll simplify the other square

Step-by-step explanation:

5 square

The simplified form of √175 is 5√7.

Here, we have,

To simplify the square root of 175, we can look for perfect square factors of 175 that can be taken out of the square root.

The largest perfect square that divides 175 is 25, which is the square of 5.

So, we can write √175 as √(25 × 7).

Using the property of square roots (√a × √b = √(a × b)),

we can split the square root:

√(25 × 7) = √25 × √7

The square root of 25 is 5, so we have:

√175 = 5√7

Therefore, the simplified form of √175 is 5√7.

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Answer:3080”

Step-by-step explanation:

Answer:

3x^3 + 4x^6 - 8x^4  or

x^3( 4x^3 - 8x + 3).

Step-by-step explanation:

 3x^3 + √(16x^12) - 8x^4

= 3x^3 + 4x^6 - 8x^4

We can factor this;  to give

x^3( 4x^3 - 8x + 3)

Answer:

-3

Step-by-step explanation:

and

= -3

What could be the equation of p?

Choose 1 answer:

©

p(x) = 2(6x + 1)(x+3)

©

p(x) = 2(6x – ) (2 – 3)

© p(x) = + (6 +) (+3)

© pla) = = (***) (2-3)

Answer:

p(x) = (5x - 1) (x + 4) (x - 2)

Step-by-step explanation:

Answer:

Weather Forecasts,Genetics,Medical Studies i think

Step-by-step explanation:

Answer:

Angle 2

Step-by-step explanation:

They are 90 degrees when added together

Answer:

<2

Step-by-step explanation:

Complementary angles add to 90 degrees ( form right angles)

<1 and <2 add to 90 degrees so they are complementary angles

Answer:

Option (3). 1571 in³

Step-by-step explanation:

Amount of cement required to fill the cement = Volume of the cone

Formula for the volume of the cone is

Volume = [tex]\frac{1}{3}\pi r^{2}h[/tex]

Here r = radius of the cone

h = height of the cone

Volume = [tex]\frac{1}{3}\pi (10^{2})(15)[/tex]

             = [tex]\frac{1}{3}\pi (100)(15)[/tex]

             = [tex]\frac{1500\pi }{3}[/tex]

             = 500π

             = 1570.8

             ≈ 1571 in³

Therefore, Option (3) is correct.

Answer:

Rough guide: doubling time in years is 72/interest rate in per cent. 72/6 is 12 so it doubles every 12 years, so in 36 years it will double 3 times.

A=300(1+.06)^36 is the formula. Without rounding, A=$2444.18. That is doubling 3 times or increasing 8 fold (and a little more)

Step-by-step explanation:

Hope this helps. Stay healthy. No corona. Take Care

At the agre of 28 he had invested A=$2444.18.

The doubling time in years is 72/interest rate in per cent.

72/6 is 12 so it doubles every 12 years,

So, in 36 years it will double 3 times.

The formula of investment is

[tex]A=P(1+r)^{nt}[/tex]

[tex]A=300(1+.06)^{36}[/tex]

Without rounding, We get,

A=$2444.18.

That is doubling 3 times or increasing 8 fold.

Therefore at the age of 28 he had invested A=$2444.18.

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Answer:

Step-by-step explanation:

jan

m

m

jun

july

5/12

Probability month starts with the letter J or M is 5/12

Computation:

Number of total month = 12

Number of month starts with the letter J or M = 5

Probability = Number of desired output ÷ Number of total output

Probability month starts with the letter J or M is = 5 / 12

So, Option 'D' is the correct answer to the following question.

Find out more information about 'Probability'.

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Answer:

10lbs. for $10.25

Step-by-step explanation:

Answer:

A. 1 cm will represent 300 metres in real life.

B. 2.5 inches will represent 15 miles on the road

Step-by-step explanation:

Part A.

The scale on the map is 1: 30000. This means that for every 1 unit drawn on the paper, it actually represents 30,000 units in real life.

To get the actual distance represented by 1 centimetre, we will first have to convert 1 cm to metre. this is because our answer is required in metres.

This will be 1 cm = 0.01 metres

We can no set up the relation.

if 1 unit represents 30,0000 units in real life

0.01 metres will represent x metres in real life.

This will be got by cross multiplying[tex]x= \frac{0.01 \times 30,000}{1}=300 metres[/tex]

it will represent 300 metres in real life.

Part B

following the same principle above, we can also set up a relation.

If 1 inch represents 6 miles

2.5 inches will represent x miles on the road.

cross multiplying, we will have

[tex]x= \frac{2.5 \times6}{1}= 15 miles[/tex]

2.5 inches will represent 15 miles on the road

Answer:

yes they do.... multiply 3/6 by 3 = 12/8

12/8 multiply by 1/3 = 3/6 or 1/2

Step-by-step explanation:

Don't you dare delete again eupora you are dum

my answer was correct you evil