12 • (2 + 2³) = 12 • (2 + 8) = 12 • 10 = 120
(7² + 1 - 5) • 3 = (49 + 1 - 5) • 3 = (50 - 5) • 3 = 45 • 3 =135
By simplifying given phrase "twice the sum of a number cubed and nine" and evaluating it for r = 3 we got that Jessica done it correctly
<h3>What is cube of any number ?</h3>
Cube of any number means multiplying that number with itself 3 times.
For example ![3^3=3\times3\times3=27](https://tex.z-dn.net/?f=3%5E3%3D3%5Ctimes3%5Ctimes3%3D27)
Here given phrase is
twice the sum of a number cubed and nine
let number be r
We can write it as
![2(r^3+9)](https://tex.z-dn.net/?f=2%28r%5E3%2B9%29)
Now evaluating it for r=3
![2(3^3+9)](https://tex.z-dn.net/?f=2%283%5E3%2B9%29)
Now we can simplify it as
![2(27+9)\\\\=(36)\\\\=72](https://tex.z-dn.net/?f=2%2827%2B9%29%5C%5C%5C%5C%3D%2836%29%5C%5C%5C%5C%3D72)
By simplifying given phrase "twice the sum of a number cubed and nine" and evaluating it for r = 3 we got that Jessica done it correctly
To learn more about cube visit : brainly.com/question/107100
Answer:
18
Step-by-step explanation:
write ham, turky and roast beef and draw 2 arrows from each one, the first one say soup and the second one say salad. Then from each of those draw 3 lines;one saying tea, one saying lemonade and one saying soda. Finaly label every drink by number. So you will have 18 numbers so there is 18 choises.
Answer:
option B is correct because
1 hectameter is equal to 10000cm
6.4 *10^-1
6.4 times ten to the negative one, or divided by 10