Answer:
5.0587
Step-by-step explanation:
"four decimal places" would be the numerals 0587. Since that 7 is followed by a zero, we round off 5.05870925358 to 5.0587. This is "to 4 decimal places."
Answer: 32°
Step-by-step explanation:
m∠BAC = m∠CDE, therefore m∠CDE = 32°
Answer:
-2x-7y=-4
Step-by-step explanation:
We want to add the two expressions
![\begin{aligned} 5x-9y &= 1 \\ -7x+2y &= -5 \end{aligned}](https://tex.z-dn.net/?f=%5Cbegin%7Baligned%7D%205x-9y%20%26%3D%201%20%5C%5C%20-7x%2B2y%20%26%3D%20-5%20%5Cend%7Baligned%7D)
First we add the Left Hand Sides and do the same to the Right Hand Sides. This gives us:
(5x-9y)+(-7x+2y)= 1 +( -5)
Open the brackets
5x-9y-7x+2y=1-5
Regroup like terms
5x-7x-9y+2y=-4
-2x-7y=-4
The result of adding the two given expressions is -2x-7y=-4.
That's a pretty confusing one. I think it's 10 minutes.