21/1 divided by 7/4 = 21/1 x 4/7 = 12.
Hope this helped my guy.
Answer:
see explanation
Step-by-step explanation:
Given the translation rule
(x, y ) → (x - 4, y + 2 )
This means subtract 4 from the original x- coordinate and add 2 to the original y- coordinate, that is
a point (4 , - 4 ) → (4 - 4, - 4 + 2 ) → (0, - 2 )
Answer:
The correct option is C. 9 houses could 18 men paint in 6 hours.
Step by step explanation:
Let the number of houses paint by 18 men in 6 hours be x.
One man can paint one house in 12 hours.
The part of house painted by a man in 1 hour is 
.
The part of house painted by a man in 6 hour is
The total number of men is 18. Therefore the number of houses painted by 18 men is
Therefore correct option is C. 9 houses could 18 men paint in 6 hours.
Answer:
D and E
Step-by-step explanation:
Using the rule of radicals
⇔ ![\sqrt[n]{a^{m} }](https://tex.z-dn.net/?f=%5Csqrt%5Bn%5D%7Ba%5E%7Bm%7D%20%7D)
Given
= (![\sqrt[7]{3}](https://tex.z-dn.net/?f=%5Csqrt%5B7%5D%7B3%7D)
)^4 → D or
= ![\sqrt[7]{3^{4} }](https://tex.z-dn.net/?f=%5Csqrt%5B7%5D%7B3%5E%7B4%7D%20%7D)
= ![\sqrt[7]{81}](https://tex.z-dn.net/?f=%5Csqrt%5B7%5D%7B81%7D)
→ E
Answer:
5x - 5
Step-by-step explanation:
To find the missing side, add the two sides together and subtract them from the perimeter.
side 1 + side 2
3x + 2 + 8x + 7
combine like terms
11x + 9
Subtract from the perimeter
16x + 4 - (11x + 9)
rewrite as an addition problem, so you need to change the signs inside the parentheses.
16x + 4 + (-11x -9)
Now combine like terms
5x - 5
