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3 years ago

What are all the signs that indicate the use of an open circle when graphing ?

Mathematics

1 answer:

JulijaS [17]3 years ago

7 0

Answer:

When graphing a linear inequality on a number line, use an open circle for "less than" or "greater than", and a closed circle for "less than or equal to" or "greater than or equal to".

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The sum of the interior angles of a 7-gon is 900 1,080 1,260 1,440

STatiana [176]

Answer:

The answer is 900.

(sides-2) x 180

(7-2) x 180

5 x 180

900

3 0

3 years ago

. Find the domain and range of y=(3-x)2 -8.

HACTEHA [7]

Domain : ( – ∞ , ∞ ) , {x/x ∈ R }

Range : [ 0 , ∞ ) , { y/y ⩾ 0 }

I hope I helped you^_^

3 0

3 years ago

Sparky weighs 3/4 of her weight plus 3/4 of a pound. How much does she weigh

anyanavicka [17]

Maybe he weighs 6/8 hjjjhhhhjjjjj

4 0

3 years ago

a strand of christmas lights measures 5/8 yards long. jake needs to outline a square with sides 1/5 yards long. does he have eno

xxTIMURxx [149]

Answer:

No, it's not long enough

Step-by-step explanation:

The perimeter of the square is 4/5. P=4s where s is the side length. 4/5 is larger than 5/8, so there will not be enough lights to cover the whole perimeter.

5 0

3 years ago

2/5 (1/3x - 15/8) - 1/3(1/2 - 2/3x)

borishaifa [10]

Your question presented was: $\frac{2}{5} (\frac{1}{3} x-\frac{15}{8} )-\frac{1}{3} (\frac{1}{2} -\frac{2}{3}x)$

Okay, lets distribute this problem and break it into two parts. We will distribute 2/5 and -1/3 to the numbers in parenthesis. This is the distributive property.

Step 1.
$\frac{2}{5} (\frac{1}{3} x-\frac{15}{8} )$ when distributed is $\frac{2}{15} x - \frac{30}{40}$

Please note that -1/3 can be rewritten as + -1/3. So you must distribute the negative.

Step 2.
$\frac{-1}{5} + \frac{2}{9} x$
So..lets put the 2 parts of the equation together

$\frac{2}{15} x - \frac{30}{40}$ + $\frac{-1}{5} + \frac{2}{9} x$ can be simplified by getting the common denominator.

You can only add like terms, so those fractions with x can only be combined with x.
Step 3.
Lets reformat while we're at it
$\frac{6}{45} x + \frac{10}{45} x -\frac{30}{40} -\frac{8}{40}$

We got 45 because the LCM (Lowest Common Multiple) of 15 and 9 was 45. We multiplied both sides of the fraction by 3 for 2/15x and we multiplied by 5 on both parts of the fraction for 2/9x.

Now we combine.
Step 4.
$\frac{16}{45}x-\frac{38}{40}$ . We can still simplify!
Step 5.
-38/40 can be simplified by a common factor, 2! So our final answer is
$\frac{16}{45}x-\frac{19}{20}$

I hope this helps you, heart if it helps.

6 0

2 years ago