All categories

3 years ago

Solve The Inequality 3x + 9 > 0 ?

Mathematics

2 answers:

Korolek [52]3 years ago

6 0

Answer:

You have to Isolate the variable by dividing each side by factors that don't contain the variable.

Inequality Form: x > − 3

Interval Notation: ( − 3 , ∞ )

Zielflug [23.3K]3 years ago

4 0

Answer:

-3

Step-by-step explanation:

3x>0-9

3x>-9

x>-3

Answered by

$^R^O^S^A^L^I^N^D$

You might be interested in

What is 5.63×10−6in decimal form?a. 0.00000563 b. 0.000000563 c.5,630,000d. 56,300,000

Lelu [443]

$5.63 \times {10}^{ - 6}$

To convert into decimal, move the decimal to the left by 6 positions.

It will be 0.00000563

Answer is A.

3 0

3 years ago

Calculate the length of the circumference of a circle with a diameter of 4cm

MakcuM [25]

Length of circumference is 2πr
2 π r and r is equal to 2 cm
I.e 12.5 cm

6 0

3 years ago

A square has a diagonal length of 10 ft. Draw a diagram and determine the perimeter of the square.

denpristay [2]

The perimeter of the square is: $20\sqrt2$ ft

Step-by-step explanation:

The picture is attached with the answer.

the diagonal of a square divides it into two right angled-triangles.

We can use one of the triangle to find the length of side as the diagonal will be the hypotenuse of the triangle

Let a be the side of the square, then according to Pythagoras theorem

$d^2=a^2+a^2\\(10)^2 = 2a^2\\2a^2=100$

Dividing both sides by 2

$\frac{2a^2}{2}=\frac{100}{2}\\a^2=50$

Taking Square root on both sides

$\sqrt{a^2}=\sqrt{50}\\a=\sqrt{25*2}\\a=\sqrt{5^2 * 2}\\a=5\sqrt{2}\ ft$

Now,

$P = 4a\\P = 4 * 5\sqrt{2}\\=20\sqrt{2}\ ft$

Hence,

The perimeter of the square is: $20\sqrt2$ ft

Keywords: Perimeter, Pythagoras Theorem

Learn more about Square at:

#learnwithBrainly

5 0

3 years ago

The length of a rectangle is 4 cm longer than the width, The perimeter is 80cm. Find the length and the width.

TEA [102]

Answer:

the length is 22 and the width is 18

Step-by-step explanation:

The perimeter is 2(l) + w(2)

w is the width and l is the length

if you plug in 22 and 18 you get

2(22)+(2)18

then you do multiplication to get

44+36

then you add and you get 80

8 0

2 years ago

The length of a rectangle is one unit shorter than one-sixth of the width, x. Which expression represents the perimeter of the r

Ivan

Width: x
Length: 1/6x-1
Perimeter
=x+x+1/6x+1/6x-1-1
=14/6x-2
=7/3x-2

8 0

3 years ago

Read 2 more answers