3 years ago

Help with this math question please

Mathematics

1 answer:

avanturin [10]3 years ago

6 0

Answer:

A :572.3

Step-by-step explanation:

i used a circle calculator

You might be interested in

Select the two binomials that are factors of this trinomial.

Stella [2.4K]

we are given

trinomial as

$x^2 -x -12$

now, we can factor it

$x^2 -x -12= x^2 -4x +3x -4*3$

$x^2 -x -12= x(x -4) +3(x -4)$

$x^2 -x -12= (x-4)(x+3)$

so, option-C and D ..............Answer

4 0

3 years ago

What is the value of m, if the equation my2+2y−4=0 has exactly one root?

stich3 [128]

Answer:

$m=\frac{-1}{4}$

Step-by-step explanation:

A quadratic equation has one root if the discriminant is 0.

That is we need $b^2-4ac=0$ for this particular question.

Compare the following to find $a,b, \text{ and } c$ :

$ax^2+bx+c=0$

$my^2+2y-4=0$

The variable $x$ is representative of the variable $y$ here.

$a=m$

$b=2$

$c=-4$

Plug in into $b^2-4ac=0$ :

$(2)^2-4(m)(-4)=0$

$4+16m=0$

Subtract 4 on both sides:

$16m=-4$

Divide both sides by 16:

$m=\frac{-4}{16}$

Reduce:

$m=\frac{-1}{4}$

6 0

3 years ago

Read 2 more answers

What is 1/2 • 2 - 1 =

ozzi

Answer:

Step-by-step explanation:

1/2 * 2 is 1. 1 - 1 is 0

Have a great day/night!

8 0

3 years ago

Read 2 more answers

Can someone help me and explain on paper , I’m still so confused

Oksanka [162]

Answer:

Your answer is -5

Step-by-step explanation:

On paper;

8 0

3 years ago

Write the standard equation of the circle shown.

zysi [14]

Answer:

Step-by-step explanation:

The equation of a circle centred at the origin is

x² + y² = r² ← r is the radius

The circle shown is centred at the origin and has a radius of 5, thus

x² + y² = 5² ⇒ x² + y² = 25 → b

4 0

3 years ago