The answer is C, there’s only 1 term= monomial
Answer:
5.5 cm
Step-by-step explanation:
√(40²-24²) - √(40²-30²)
= 32-10√7
= 5.5 (rounded to the nearest tenth)
Answered by GAUTHMATH
Answer:
1 solution
Step-by-step explanation:
3(2x-7)=9
dustribute: (3)(2)+(3)(-7x)=9
6+-21x=9
subtract 6 from both sides: -21x=3
Divide both sides by -21: x=-1/7
so your 1 solution is x = - 1/7
Answer:
1/3
Step-by-step explanation:
Since there are 7 girls and 2 boys the teacher should do this
1 boy for every 2 girls which there are two 2 so there will be two groups of 1 boys and 2 girls while the last group will all be girls.
Hope this helps. :)
Answer:
![- 6 {x}^{2} + 26xy - 28 {y}^{2}](https://tex.z-dn.net/?f=%20-%206%20%7Bx%7D%5E%7B2%7D%20%20%2B%2026xy%20-%2028%20%7By%7D%5E%7B2%7D%20)
Step-by-step explanation:
The given expresion is:
(−2x + 4y)(3x − 7y)
We expand using the distributive property: (a+b)(c+d)=a(c+d)+b(c+d)
We apply this property to get:
![( - 2x + 4y)(3x - 7y) = - 2x \times(3x - 7y) + 4y(3x - 7y)](https://tex.z-dn.net/?f=%28%20-%202x%20%2B%204y%29%283x%20-%207y%29%20%3D%20%20-%202x%20%5Ctimes%283x%20%20-%207y%29%20%2B%204y%283x%20-%207y%29)
We expand further to obtain:
![- 6 {x}^{2} + 14xy + 12xy - 28 {y}^{2}](https://tex.z-dn.net/?f=%20-%206%20%7Bx%7D%5E%7B2%7D%20%20%2B%2014xy%20%2B%2012xy%20-%2028%20%7By%7D%5E%7B2%7D%20)
![- 6 {x}^{2} + 26xy - 28{y}^{2}](https://tex.z-dn.net/?f=%20-%206%20%7Bx%7D%5E%7B2%7D%20%20%2B%2026xy%20%20-%2028%7By%7D%5E%7B2%7D%20)