The correct answer will be -4x - 10 which is A. X subtracts to the other side and makes it -4x, then 6 +-4 = -10
Answer: 54
Explanation step by step: according to bidmas you must open the bracket first before any other thing. so the solution is 5×5-7×3
Answer:

Step-by-step explanation:
This can be solved with Pythagreon Thereom.

Follow the steps below. A and B are the heaight an base, C is they hypotonuese.

Answer:
15 km?
Step-by-step explanation:
10 km per hour for one hour is 10km. plus the half hour, half of the distance 5km is just 15km
First find the difference that went by subtracting the 2 numbers:
340 - 306 = 34
divide that by the number of students that went to the first dance:
34 / 340 = 0.1 = 10% decrease