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4 years ago

What is (x+3)(x+3) simplified

Mathematics

2 answers:

svp [43]4 years ago

7 0

Answer:

x² + 6x + 9

Step-by-step explanation:

Each term in the second factor is multiplied by each term in the first factor, that is

x(x + 3) + 3(x + 3) ← distribute both parenthesis

= x² + 3x + 3x + 9 ← collect like terms

= x² + 6x + 9

Svet_ta [14]4 years ago

5 0

Answer:

x² + 6x + 9

Step-by-step explanation:

If you multiply them together, they would result as an expand form but you can simplify it in its simplest terms.

(x + 3)(x + 3)

x² + 3x + 3x + 9

x² + 6x + 9

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Find the missing sides.

love history [14]

Answer:

Part 3)

$x=6\ units$

$y=3\ units$

Part 4) $x=18\sqrt{2}\ units$

Step-by-step explanation:

Part 3)

Find the value of x

In the right triangle of the figure we know that

The cosine of angle of 30 degrees is equal to the adjacent side to angle of 30 degrees divide by the hypotenuse

$cos(30\°)=\frac{3\sqrt{3}}{x}$

and remember that

$cos(30\°)=\frac{\sqrt{3}}{2}$

substitute

$\frac{\sqrt{3}}{2}=\frac{3\sqrt{3}}{x}$

Simplify

$x=(2*3)=6\ units$

Find the value of y

In the right triangle of the figure we know that

The sine of angle of 30 degrees is equal to the opposite side to angle of 30 degrees divide by the hypotenuse

$sin(30\°)=\frac{y}{x}$

and remember that

$sin(30\°)=\frac{1}{2}$

substitute

$\frac{1}{2}=\frac{y}{6}$

$y=6/2=3\ units$

Part 4) Find the value of x

Applying the Pythagoras Theorem

$x^{2} =18^{2} +18^{2} \\ \\x^{2} = 324+324\\ \\x^{2}=648\\ \\x=\sqrt{648}\ units$

Simplify

$x=18\sqrt{2}\ units$

6 0

3 years ago

Please help me really fast! : )

victus00 [196]

Slope is always behind the variable x.
Slope is 9.
Y-intercept is after the variable x.
Y-intercept is -7

5 0

3 years ago

Read 2 more answers

In physics, it is important to use mathematical approximations. for instance, in a small angle approximation, tanα ∼ sin α . fin

siniylev [52]

Note that x is measured in radians.
The percent difference or error between sin(x) and tan(x) is calculated as
$d = 100( \frac{|sin(x)-tan(x)|}{sin(x)} )$

We want this percent difference to be less than 10.4%.
Because tan(x) > sin(x) for small values of x, define
$f(x) = \frac{tan(x)-sin(x)}{sin(x)}= 0.104 \\ or \\ sec(x) - 1 = 0.104 \\ sec(x) = 1.104$

From the calculator, obtain
sec⁻¹ 1.104 = 0.4375

Answer: x = 0.4375 radians

5 0

3 years ago

Apple estimates that 2.8 million square feet of the building is used for office space. Is their estimate reasonable? Below is th

Virty [35]

The estimate that 2.8 million square feet of the building is used for office space is not reasonable

<h3>How to determine the true statement?</h3>

From the plan, the width of the building is:

Width = 230 feet

The building has a circular area, and it has four floors

So, the estimate of the building area is:

Area= 4πR²

So, we have:

Area= 4 * 3.14 * 230²

Evaluate

Area= 664424

The above value cannot be approximated to 2.8 million

Hence, the estimate used for office space is not reasonable