MATHEMATICS HIGH SCHOOL

What are the solutions to the quadratic equation x2 – 16 = 0?x = 2 and x = –2
x = 4 and x = –4
x = 8 and x = –8
x = 16 and x = –16

Answers

Answer 1
Answer:

The correct statement is that the solution of this equation x² – 16 = 0, is 4 and -4.

What is a quadratic equation?

It is a polynomial that is equal to zero. Polynomial of variable power 2, 1, and 0 terms are there. Any equation having one term in which the power of the variable is a maximum of 2 then it is called a quadratic equation. The general form of the quadratic equation is ax² + bx + c = 0

Given

The quadratic equation x² – 16 = 0

To find

The root of the quadratic equtaion?

How do find the solutions to the quadratic equation?

The quadratic equation x² – 16 = 0

We know the formula,

a² - b² = ( a - b ) ( a + b )

Then

        x² – 4² = 0

(x - 4)(x + 4) = 0

                 x = 4 and -4

Thus, the solution of this equation x² – 16 = 0, is 4 and -4.

More about the quadratic equation link is given below.

brainly.com/question/2263981
Answer 2
Answer:

Answer:  The correct option is (B) x = 4 and x = -4.

Step-by-step explanation:  We are given to find the solutions to the following quadratic equation :

x^2-16=0~~~~~~~~~~~~~~~~~~~~~(i)

Since the coefficient of x is zero in the given equation, so we will be using the method of square root to solve the equation.

From equation (i), we have

x^2-16=0\n\n\Rightarrow x^2=16\n\n\Rightarrow x=\pm√(16)~~~~~~~\textup{[taking square root on both sides]}\n\n\Rightarrow x=\pm4\n\n\Rightarrow x=4,~-4.

Thus, the required solution is x = 4 and x = -4.

Option (B) is correct.

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What is the formula for V=lwh for h

Answers

remember, you can do anythingn to an equaiton as long as you do it to both sides (except divide by zero)

solve for h
V=lwh
divide both sides by lw
V/(lw)=h
tada

Use the Elimination method to solve the system of equations.

X+y=-3
X-y=13

Answers

x + y = -3
x -  y = 13
    2x = 10
     2      2
      x = 5
  x + y = -3
  5 + y = -3
- 5         - 5
        y = -8
  (x, y) = (5, -8)
For x
x+y=-3
x-y=13
---------
2x=10
x=5
For y
5+y=-3
y=-3-5
y=-8

How do you graph y=lxl - 3 please explain

Answers

y=x\n\n\Downarrow S_(OX\ for\ y < 0)\n\ny=|x|\n\n\Downarrow T_{\vec{a}=[0;-3]}\n\ny=|x|-3


y=x\n\nfor\ x=0\to y=0\to(0;\ 0)\n\nfor\ x=2\to y=2\to(2;\ 2)\n\n\nlook\ at\ the\ picture

I don't know how i would even go about this question without more information

Answers

Because the trapezoid is isosceles, the desired angle is equal to 180-31=149.

What two numbers multiply to 18 but add to get -5?

Answers

so this one has to be two negative numbers to get a positive number. so then you can think of what multipys to 18
-9*-2 wont work because -9+-2 gets you -11
-6*-3 wont work because -6+-3 gets negative nine
i dont think there is one honestly. ive sat here and tried them all
2 and 9 6 and 3 and 18 and 1 

Final answer:

To find two numbers that multiply to 18 and add to -5, consider the factors of 18 and check which pair meets the conditions. The numbers that satisfy the given conditions are -9 and -2.

Explanation:

To find two numbers that multiply to 18 and add to -5, we can use the factoring method. By considering all the possible factors of 18, we can find the pair of numbers that satisfy the given conditions. The two numbers that meet these criteria are -9 and -2.(-9 * -2 = 18, -9 + -2 = -11)

Learn more about Factoring here:

brainly.com/question/34290719

#SPJ2

15% of 20 is what number?

Answers

Answer:

Brainliest plz

Step-by-step explanation:

20 x 15%

is equal too...

20 x 0.15

and that is equal to

...

3
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