3 years ago

Choose an expression equal to: 12x + 9

Mathematics

1 answer:

natulia [17]3 years ago

8 0

Answer:3

3(4x+3)

Step-by-step explanation:

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Please help me with this question thanks. PLEASE I REALLY NEED HELP ON THIS PROBLEM

arlik [135]

Step One

Find the area of the base

A = s * s

s = 755.5 feet

Area = 755.5^2

Area = 570780.25 square feet.

Step two

Multiply the volume by 3

V = 1/3 B * h

3*V = B * h

V = 85600000

85600000 * 3 = B * h

256800000 = B * h

Step Three

Divide by B

B = 570780.25

256800000 = 570780.25 * h

256800000 / 570780.25 = h

449.91 feet = h

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3 years ago

Students at Jefferson Middle School are required to read a 3-book series for their literature class. Book 1 has 303 pages, Book

katrin2010 [14]

There is 981 pages in the whole series

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3 years ago

True or false to find the percent of a number we convert to a fraction or a decimal and then divide the number

8_murik_8 [283]

true, when you convert to a decimal, you add a zero in the variable

4 0

3 years ago

The angle θ 1 is located in Quadrant IV, and cos ⁡ ( θ 1 ) = 9/ 19 , theta, start subscript, 1, end subscript, right parenthesis

Firdavs [7]

Answer:

$sin\theta_1 = - \frac{2\sqrt{70}}{19}$

Step-by-step explanation:

We are given that $\theta_1$ is in <em>fourth</em> quadrant.

$cos\theta_1$ is always positive in 4th quadrant and

$sin\theta_1$ is always negative in 4th quadrant.

Also, we know the following identity about $sin\theta$ and $cos\theta$ :

$sin^2\theta + cos^2\theta = 1$

Using \theta_1 in place of \theta:

$sin^2\theta_1 + cos^2\theta_1 = 1$

We are given that $cos\theta_1 = \frac{9}{19}$

$\Rightarrow sin^2\theta_1 + \dfrac{9^2}{19^2} = 1\\\Rightarrow sin^2\theta_1 = 1 - \dfrac{81}{361}\\\Rightarrow sin^2\theta_1 = \dfrac{361-81}{361}\\\Rightarrow sin^2\theta_1 = \dfrac{280}{361}\\\Rightarrow sin\theta_1 = \sqrt{\dfrac{280}{361}}\\\Rightarrow sin\theta_1 = +\dfrac{2\sqrt{70}}{19}, -\dfrac{2\sqrt{70}}{19}$

$\theta_1$ is in <em>4th quadrant </em>so $sin\theta_1$ is negative.

So, value of $sin\theta_1 = - \frac{2\sqrt{70}}{19}$

6 0

3 years ago

Jean junction is selling jeans at 15% off the regular price. The regular price is 25.00 per pair. What is the discount amount?

irga5000 [103]

Answer:

the discount is 3.75 and that subtracted is 22.25

Step-by-step explanation:

25-3.75=22.25

5 0

3 years ago