3x² + 8x + 5 = 0 method of completing square.
plz help me I have lots of assignment.​

Answer:

A = 452.16

Step-by-step explanation:

A = 1/4 x 3.14 x d^2

Answer:

75.36

Step-by-step explanation:

did math

Answer:

RECORD TIME

Step-by-step explanation:

I just solved the first expression and went in the direction of the correct answer and got the words 'RECORD TIME'. It took me about 3 minutes

Answer:

I think the answer is 8

Step-by-step explanation:

Answer:

8.17 grams

Step-by-step explanation:

To find the total mass of the two coins add the masses together.

[tex]5.67+2.5=8.17[/tex]

Answer:

y = 3x + 11

Step-by-step explanation:

obviously since y is 11 when x is zero the constant term is 11.

Then use the other coordinates to find the cooefficent of x.

-4= c × -5 + 11

-4= -5c + 11

5c=15, c=3

Therefore the equation should be:

y= 3x + 11

Answer:

Step-by-step explanation:

57

Answer:

27 liter

Step-by-step explanation:

2 3 liter = 3+3= 6

3 7 liter = 7+7+7= 21

21+6=27

Answer:

0, 1/2

Step-by-step explanation:

Answer:

1 1/4 more hours

Step-by-step explanation:

To find this, we must subtract 2 1/2, the time it takes you to get home with bad weather by 1 1/4, the amount it usually takes you to get home. We can make 2 1/2 into 2 2/4, and now we can subtract and get 1 1/4.

Answer:

3/5 or 60%

Step-by-step explanation:

Answer:

the answer is 13.2

Step-by-step explanation:

Answer:

13.2

Step-by-step explanation:

277.2÷21=13.2 gallons

The solutions of the given equation are x=4 and x=-4. Therefore, options B and E are the correct answers.

The solutions to the quadratic equation are the values of the unknown variable x, which satisfy the equation. These solutions are called roots or zeros of quadratic equations. The roots of any polynomial are the solutions for the given equation.

The given quadratic equation is x²-16=0.

Here, x²=16

x=±√16

x=±4

So, the solutions are x=4 and x=-4.

Therefore, options B and E are the correct answers.

To learn more about the solution of quadratic equation visit:

https://brainly.com/question/18305483.

#SPJ7

Answer: Nevan will receive a refund of $1,074.

Step-by-step explanation:

I don't remember how I did it but I looked it up on Quizlet.

Nevan will receive a refund of $1,074.

Answer:

57 and 57 or 66 and 48

Step-by-step explanation:

180-66=114

114/2=57

the awnser is 24

Step-by-step explanation:

I think it might be wrong sorry if it wrong

Answer:4

Step-by-step explanation:

H= 2*26/5+8

Answer:

Natural numbers are all numbers 1, 2, 3, 4… They are the numbers you usually count and they will continue on into infinity.

Whole numbers are all natural numbers including 0 e.g. 0, 1, 2, 3, 4…

Integers include all whole numbers and their negative counterpart e.g. …-4, -3, -2, -1, 0,1, 2, 3, 4,…

All integers belong to the rational numbers. A rational number is a number

ab,b≠0

Where a and b are both integers.

Example

The number 4 is an integer as well as a rational number. As it can be written without a decimal component it belongs to the integers. It is a rational number because it can be written as:

41

or

82

or even

−8−2

Whereas

15=0.2

is a rational number but not an integer.

A rational number written in a decimal form can either be terminating as in:

15=0.2

Or repeating as in

56=0.83333...

All rational numbers belong to the real numbers.

If you look at a numeral line

picture05

You notice that all integers, as well as all rational numbers, are at a specific distance from 0. This distance between a number x and 0 is called a number's absolute value. It is shown with the symbol

|x|

If two numbers are at the same distance from 0 as in the case of 10 and -10 they are called opposites. Opposites have the same absolute value since they are both at the same distance from 0.

|10|=10=|−10|

Step-by-step explanation:

Step-by-step explanation:

Sorry that they're sideways, it's the only way brainy would let me send them!!

Answer:

10

Step-by-step explanation:

If J + K = 90 degrees and K = 45 degrees, J has to be 45 degrees.

3x+15=45

-15       -15

3x=30

/3    /3

x=10

Answer:A b c a c b c a b b a e all answers trust me and mark me brainest

Step-by-step explanation:

Answer:

cant see it make it bigger

Step-by-step explanation:

Answer:

[tex]\boxed{\textsf{ The value of x is }\bf{ \dfrac{-5\pm\sqrt{21}}{2}}.}[/tex]

Step-by-step explanation:

A quadratic equation is given to us and we need to find the Solutions of the quadratic equation . So the given equⁿ is ,

[tex]\sf\implies (x+4)^2 -3(x+4) -3 = 0 [/tex]

Firstly let's simpify the quadratic equation and then use the quadratic formula also known as " Shreedhacharya's Formula" .

Taking the given equation :-

[tex]\sf\implies (x+4)^2 -3(x+4) -3 = 0\\\\\sf\implies x^2 + 16 + 8x -3x -12 -3 = 0 \\\\\sf\implies x^2+5x +1 = 0 [/tex]

Now let's use the Quadratic formula ,

Quadratic Formula :-

[tex]\qquad\boxed{\boxed{ \sf x =\dfrac{ -b \pm \sqrt{ b^2-4ac}}{2a} }} [/tex]

With respect to Standard form ax² + bx + c form. Here a = 1 , b = 5 and c = 1 .

[tex]\sf\implies x = \dfrac{ -5\pm \sqrt{ (5)^2-4(1)(1)}}{2(1)} \\\\\sf\implies x = \dfrac{ -5 \pm \sqrt{ 25 -4 } }{2} \\\\\sf\implies \boxed{\pink{\sf x = \dfrac{-5+\sqrt{21}}{2}, \dfrac{-5-\sqrt{21}}{2} }}[/tex]

Answer:

Step-by-step explanation:

A number squared is just the number times itself.

[tex]n(n)=n^2[/tex]

Answer:

A number squared is a number to the power of 2 or the number times itself.

Step-by-step explanation:

Lets say you have a 4 to the 2nd that would mean that the 4 is multiplied by 4. Dont get the exponent confused as the number to multiply it as. Look at [tex]9^{2}[/tex] for example, you would multiply the number 9 2 times not 9 times 2 so it would be 9x9.

Answer:

her y intercept would be $15.

Answer:

5% ????

Step-by-step explanation:

Not sure?

I think its 5%

Answer:

Its 5 inches

Step-by-step explanation:

This is because 1 inch is 100 miles and there are 500 miles so 1 inch times 5 is 5

Answer:

C.    16.9

Step-by-step explanation:

Answer:

C.

Step-by-step explanation:

Answer:

a) Label the points given (give the ordered pair).

b) What is the unit rate?

c) Plot and label the point whose ordered pair represents the unit rate.

d) What are the coordinates of that point?

e) Explain what the point that you plotted means in this context of this problem.

f) Write an equation for this graph. ​

Answer:

4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81,82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99, 100.

Step-by-step explanation:

its pretty simple...