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3 years ago

8

Someone please help me ! I suck at plotting inequalities and when are you suppose to keep the circle open or close ?

2 answers:

wariber [46]3 years ago

8 0

When it has the line under the sign that means the dot is closed. For example that is closed because it x is greater than or equal to -1, so if it has a line under the > sign that means the dot is closed

gulaghasi [49]3 years ago

5 0

keep the circle open if it there is no equal sign underneath the greater than or less than, that is because if there is no equal sign, then that value is not included, so it is open. If there is, then the value is a part of the solution, so it is closed circle to represent that it is part of the line.

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Answers: a/b= 8/2 B: 3.2/2= a/b C: b/6.4 = 8/5 D: 2/ 3.2= b/a

scoundrel [369]

Answer:

b/6.4 = 8/5

Step-by-step explanation:

6 0

2 years ago

Use a graphing calculator to sketch the graph of the quadratic equation, and then give the coordinates for the x-

Umnica [9.8K]

Given:

The quadratic equation is

$y=6x^2-15x+6$

To find:

The x-intercepts of the given equation.

Solution:

We have,

$y=6x^2-15x+6$

Splitting the middle term, we get

$y=6x^2-12x-3x+6$

$y=6x(x-2)-3(x-2)$

$y=(x-2)(6x-3)$

For x-intercepts, y=0.

$(x-2)(6x-3)=0$

Using zero product property, we get

$x-2=0\text{ and }6x-3=0$

$x=2\text{ and }6x=3$

$x=2\text{ and }x=\dfrac{3}{6}$

$x=2\text{ and }x=0.5$

So, the x-intercepts are (0.5,0) and (2,0).

Therefore, the correct option is a.

5 0

2 years ago

I need help please and can you explain <br> ANSWER ASAP!!!!

Andru [333]

The app uses 2^28 bytes.

Step-by-step explanation:

Step 1: Given total storage used by the app = 4^4 Megabytes. Also, 1 MB = 2^20 bytes. Find total storage used by app in bytes.

⇒ 4^4 × 2^20 = (2²)^4 × 2^20 = 2^8 × 2^20

= 2^8+20

= 2^28 bytes (using the law of exponents a^m × a^n = a^m+n)

5 0

2 years ago

Solve this problem y=(x-3)^2 when x=9

atroni [7]

Y=36

it basically says y=(9-3)^2
which is y=6^2
which is then y=36

3 0

3 years ago

The circle below has a radius of 3 units . Find the area of the circle. Use 3.14 for π.

const2013 [10]

Answer:

28.26 units

Step-by-step explanation:

We know the radius of the circle is 3 units, so we'll end up plugging that into the formula.

A = π(3^2) or A = π * 3 * 3

When you substitute pi for 3.14, you'll end up getting 28.26 units.

Hope this helped! :)

6 0

2 years ago