All categories

3 years ago

How do I solve 3x(4x-15)

1 answer:

7 0

3x(4x - 15) < Given
12x^2 - 45x < Distributive law of property

By the way, you are simplifying not solving. You solve equations and simplify expressions.

You might be interested in

A rectangular box has a length of 8 feet and a width of 2 feet. The length of the three-dimensional diagonal is 10 feet. What is

harkovskaia [24]

Answer: $h=5.66ft$

Step-by-step explanation:

Observe the picture attached.

Find the value of "x" and "y" using the Pythagoren Theorem:

$a^2=b^2+c^2$

If you solve for "a":

$a= \sqrt{b^2+c^2}$

Where "a" is the hypotenuse and "b" and "c" are the legs.

In this case, for "x" you know that:

$a=x\\b=8ft\\c=2ft$

Then, the value of "x" is:

$x=\sqrt{(8ft)^2+(2ft)^2}\\\\x=8.24ft$

For "y" you can see that:

$a=10ft\\b=8.24ft\\c=h$

Subsituting values and solving for h, you get:

$(10ft)^2=(8.24ft)^2+h^2\\\\h=\sqrt{(10ft)^2-(8.24ft)^2} \\\\h=5.66ft$

3 0

4 years ago

What is surface area

ahrayia [7]

Area of the "sides" =
2 * 3.61 * 11 = 79.42

Area of the front and back =
2 * (2 * 3) = 12

Total Area = 91.42 cm

5 0

4 years ago

Find the exact value of cos2theta if sin2theta=3/4 and theta is between 0 and 90 degree

sammy [17]

<h2> <u>Answer</u> :</h2>

$\boxed{ \boxed{ \cos {}^{2} ( \theta) = \dfrac{1}{4} }}$

<h2><u>Solution</u> :</h2>

According to a Trigonometric Identity :

$\hookrightarrow \mathrm{\sin {}^{2} ( \theta) + \cos {}^{2} ( \theta) = 1}$

Now, let's solve for $\cos²(\theta)$

$\longrightarrow \dfrac{3}{4} + \cos {}^{2} ( \theta) = 1$

$\longrightarrow \cos{}^{2}( \theta) = 1 - \dfrac{3}{4}$

$\longrightarrow \cos {}^{2} ( \theta) = \dfrac{4 - 3}{4}$

$\longrightarrow \cos {}^{2} ( \theta) = \dfrac{1}{4}$

$\large\mathfrak{{\pmb{\underline{\orange{hope \: \: it \: \: helps \: \: you.....}}{\orange{}}}}}$

4 0

3 years ago

Use the absolute value to express the distance between 12 and -5 on a number line

posledela

17 is the absolute value

7 0

4 years ago

Plsss help I’ll give u brainlest and 10 points number 13 pls

yuradex [85]

Answer:

Step-by-step explanation:

I added 6.5 to the equation, found the mean, and it was 3.5.

8 0

3 years ago