The second piece would be 28 cm.
You could solve this by subtracting 7 from 63 first. Next you divide it by two one piece is 35 and the other 28.
(Have a nice day :) )
Answer:
30 Chairs
Step-by-step explanation:
I will solve this problem using algebra and try to explain in detail.
We can form two equations with the information given to us.
Firstly, 5 times a length of chairs (I will call this unknown length of chairs x), plus 5 left over chairs, equals the total number of chairs (I will call the total number of chairs y).
5x + 5 = y
Secondly, 3 times a length of chairs (I will call this unknown length of chairs x), plus 15 left over chairs, equals the total number of chairs (I will call the total number of chairs y).
3x + 15 = y
Since both equations are equal to y, they are equal to each other
5x + 5 = 3x + 15
Take 5 away from both sides of the equals, and take away 3x from both sides of the equals
5x - 3x = 15 - 5
2x = 10
Divide both sides by 2
x = 5 chairs
Put this back into either the first equation or the second to solve for y
3 (5) + 15 = y
15 + 15 = y
y = 30 chairs
Answer: length = 12
<u>Step-by-step explanation:</u>
Use Pythagorean Theorem: length² + height² = hypotenuse²
length = L
height = L - 7
hypotenuse = L + 1
L² + (L - 7)² = (L + 1)²
L² + L² - 14L + 49 = L² + 2L + 1
2L² - 14L + 49 = L² + 2L + 1
L² - 14L + 49 = 2L + 1
L² - 16L + 49 = 1
L² - 16L + 48 = 0
(L - 4)(L - 12) = 0
L - 4 = 0 L - 12 = 0
L = 4 L = 12
Input L = 4 and L = 12 to find the height:
Height = L - 7 height = L - 7
= 4 - 7 = 12 - 7
= -3 = 5
↓
negative height is not valid
So, the only valid solution is L = 12
Answer:
The initial speed of a car at a red light would be 0 m/s, because it has fully been put to a stop. It's not moving.
Step-by-step explanation:
If a car were to fully stop there would be no speed.
For example, if you were to go walking in the city, and you were about to walk onto the crosswalk, but the signal turn into a reg light. Then you would have stopped. Then you have gone into an idle position. When in this idle position, it is like you aren't moving, so there is no acceleration in speed or decrease. It is also much like a stop sign, you would make a full stop when you see it.
Answer:
i^223 = -i
i^113 = i
i^82 = -1
i^48 = 1
Step-by-step explanation:
These are rules of i.
i^1 = i
i^2 = -1
i^3 = -i
i^4 = 1
You just have to apply this to the powers you are given.