Answer:
x + y +z= 10
Step-by-step explanation:
4x - y = 5 ---------(I)
4y - z = 7 ---------(II)
4z - x = 18 ---------(III)
Add all the three equations,
4x - y + 4y - z + 4z - x = 5 + 7 + 18
4x - x -y + 4y -z + 4z = 30
3x + 3y + 3z = 30
Divide the entire equation by 3
![\sf \dfrac{3x}{3}+\dfrac{3y}{3}+\dfrac{3z}{3} = \dfrac{30}{3}](https://tex.z-dn.net/?f=%5Csf%20%5Cdfrac%7B3x%7D%7B3%7D%2B%5Cdfrac%7B3y%7D%7B3%7D%2B%5Cdfrac%7B3z%7D%7B3%7D%20%3D%20%5Cdfrac%7B30%7D%7B3%7D)
x + y + z = 10
Answer:
The answere is B - 28.7ft
Step-by-step explanation:
Sin(55) = y/35
y = 35 * Sin(55)
y = 28.7 ft
For this specific problem, x
rounded to the nearest meter is 4. I am hoping that this answer has
satisfied your query about and it will be able to help you, and if you’d like,
feel free to ask another question.
Answer: 140cm²
Step-by-step explanation:
Perimeter of a rectangle is calculated as: = 2(length + width)
where,
Length = x+4
Width = x
Therefore, perimeter = 2(length + width)
2(x + x+4) = 48
2(2x + 4) = 48
4x + 8 = 48
4x = 48 - 8.
4x = 40
x = 40/4
x = 10cm
The other side = x+4 = 10+4 = 14cm
Area = length × width
Area = 10cm × 14cm
Area = 140cm²
Answer:
5
Step-by-step explanation:
So the square root of 21 is 4.582...
If you round 4.582.. it is 5
Because you look at the first number behind the decimal (tenths place) if it is 4-0 you leave the number the same. If it is 5-9 you increase the number by 1.
Hope this helps ya!!