4 years ago

What is expanded number 289 mean

Mathematics

1 answer:

natita [175]4 years ago

4 0

200
80 thats the answer
9

You might be interested in

Describe the process for calculating the volume of a pyramid. Use complete sentences.

Nataly [62]

The volume of a pyramid can be calculated by first calculating the area of the base, then multiply the result to the height of the pyramid and then divide the result by 3.

5 0

4 years ago

Read 2 more answers

Yo someone answer this because if I get a bad grade my xbox is getting taken away

blsea [12.9K]

You just have to substitute the x for the given number and complete the equation. Leave the x-box and laziness and study

8 0

3 years ago

Find the exact value of cos(theta) for an angle (theta) with tan (theta)= -2/3 and with its terminal side in Quadrant II.

Naya [18.7K]

Answer:

$-\frac{3\sqrt{13}}{13}$ .

Step-by-step explanation:

Since we are in quadrant two, cosine value is negative while sine value is positive.

We are going to use the Pythagorean Identity: $1+\tan^2(\theta)=\sec^2(\theta)$ .

$1+(\frac{-2}{3})^2=\sec^2(\theta)$

$1+\frac{4}{9}=\sec^2(\theta)$

$\frac{9+4}{9}=\sec^2(\theta)$

$\frac{13}{9}=\sec^2(\theta)$

$\pm \sqrt{\frac{13}{9}}=\sec(\theta)$

$\pm \frac{\sqrt{13}}{3}=\sec(\theta)$

Since cosine and secant are reciprocals then they will have the same sign as along as they both exist.

$\sec(\theta)=-\frac{\sqrt{13}}{3}$

$\cos(\theta)=-\frac{3}{\sqrt{13}}$ .

I don't see this answer as I'm going to rationalize the denominator.

$\cos(\theta)=-\frac{3}{\sqrt{13}} \cdot \frac{\sqrt{13}}{\sqrt{13}}$ .

$\cos(\theta)=-\frac{3\sqrt{13}}{13}$ .

8 0

4 years ago

Read 2 more answers

Please help me this is due tomorrow!! TRIGONOMETRY

Ronch [10]

22.5ft using tan, i believe.

7 0

4 years ago

Find the mean of the following: 158, 213, 107, 213, and 213. If needed, round your answer to the nearest tenth

Shalnov [3]

Answer:

180.8

Step-by-step explanation:

1. Add all the numbers

2. Divide the sum by 5

3. you get the answer

4 0

3 years ago

Read 2 more answers